*Solid, **Fastly.Cool** and gets the job done. For rooms where window-mounted air conditioning is not an option, this works very well. Easy set up, rapid cooling, and great design.*
Hello. Your combination of knowledge, skill, work ethic, and demeanor is simply outstanding. I feel like you are a very rare breed in terms of finding an honest, knowledgeable, hard working RV technician. I enjoy your videos tremendously. Thank you, and keep up the great work!
Wear black gloves and the camera will expose the frame to compensate, meaning the shadowy areas in the control box will show up better. When you wear white gloves the frame becomes much darker making it harder to see everything. Thank you for making these videos. I’m a first time owner and they have helped me immensely.
AZ expert, I appreciate all you folks that share your knowledge. I have the same unit that you are working on in this video . Coleman Mach 6535 basement AC. I’ve replaced all the capacitors, bearings on the fan motors, the #2 compressor relay. With a buddy’s help we replaced the circuit board after watching your video and following the instructions that came with it. I had an AC tech out who did a cursory inspection and he said the compressors looked good and that the board was probably bad so I ordered one and found your video. It’s still doing the same thing. I set the thermostat for one degree below the interior temp and switch it on, runs fine cools down to that temp and I move the thermostat 1 degree lower. If I go to 2+ degrees the second compressor come on , the exterior fan cuts off and the unit keeps drawing power until it is pulling 31 amps. Then it shuts down. Also if it is hotter (midday) and humid even though it’s only 1 degree below and the #2 compressor doesn’t come on it will pop the red reset button after 15 minutes. Any Ideas what I should try next? Thanks /
James your knowledge always amazes me. I watched this as I am looking at a 07 with basement air. Not a Winnebago though. Many on different forums say they like the basement air. Thanks for all you do for the RV community.
Great videos. I've been in the construction industry for many years, have been a home inspector and am a plant engineer. It's amazing how much gets done wrong on something brand new, how bad a good intentioned owner can screw something up and how poorly "experts" can troubleshoot. Nice work.
First I want to thank you for such great content. I have a 2002 Winnebago Adventurer with basement dual heat pumps. I have been having an issue with compressors not running correctly. I found your video and I ordered two relays and the updated control board. After watching your video and reviewing the instruction I installed the board and relays today. Works like a champ. It was original board and as you showed my board also had been super heating at resistors. New board is so much simpler. Thank you again.
My head is spinning watching you pull those wires! I have an '02 Adventurer 35U with the Coleman Mach Basement System (6535-A Board). The fans run in the coach fine, but compressor #1 does not kick on. Power management readout always shows between 1-3 amps depending what's on when I've been troubleshooting it (off my Generator). So far, I have replaced all 5 capacitors (2 new hard start kits, 2 motor run capacitors, and the fan capacitor), checked ohms on all compressor lead combinations (showing no issues) as well as jumping both the indoor and outdoor coil sensor to test for a possible temperature safety lock-out. All have produced no positive results, and I still have the green LED light rapid flashing. I've contacted a couple of buddies that deal in hvac, and they asked if I could check the refrigerant levels, but I don't think there is anywhere to verify that on these models, correct? What else could I be missing?
Hi! Txs for the video! I have a 2000 winnebago Adventurer and A/C is not working at all. Will try to buy some parts and go from there since we live far from the city and can’t find anybody to work on those issues. Appreciate very much all the instructions.
I have an ‘05 Itasca Suncruiser with this Coleman-Mach system. Compressor failed a couple weeks ago and luckily I found a replacement compressor for $600. Problem is finding anyone to even attempt the work right now. I don’t even know what Freon to put in it. I wish I could find someone with your knowledge in my area to help me out! I’d really like to have my AC working in Florida. Thanks for the videos.
James I know this is fairly old but I believe I have this same unit in my Meridian. I am running 20-30 amp and my ac seems ok until the temp hits about 100 outside. I am going through and putting shades on windows etc but it gets about 95 degrees during the day. That seems excessive with this type of system.
What a great tutorial. I just bought a 2000 Winnebago as my first RV and have a lot to learn. My first step was to upgrade to 50 amp service. The ATS was 50 amp from the factory and your are right their 30 amp wiring was a complete mess. I ripped it out and wired direct to AC from the breaker box. Thank goodness I found this video because now I know I have the new circuit board and that the old diagram is invalid. And the mystery of 4 blinks on the green led is solved. My first AC problem was a broken / loose setscrew on the power input. I didn't like the cheap terminal board at all and replaced it along with the run caps and start caps and PTCs. Finally the primary compressor works. But number 2 appears to be locked up drawing a large current until the thermal switch cuts out.. Thanks to your other video I will pull out the unit and take a look at it. How critical is getting an exact replacement for the compressor?
Thank you! I'm glad it helped....but yes Winnebago did a very strange 30amp wiring for the basement A/C to work with a 5500 watt generator but 30amp service.
@@AZExpert Yep compressor 2 was locked up because the copper tube on the suction side cracked and all the freon escaped a long time ago. The previous owner didn't know anything about it and had paid someone $600 to fix it when he bought it in December. I assume the AC tech didn't know anything about basement AC units so when he replaced the board and it ran on one compressor and it was December. I certainly didn't know there were two compressors when I test drove it. What a shame that Coleman dropped the low pressure switch. I have ordered two that screw on to the Schrader valves to protect the compressors in the future. This is an insidious problem because if the freon leaks out slowly you are almost guaranteed to burn up a compressor before the average person would notice. Bad engineering to save a few dollars.
I have an ‘02 Winnebago Adventurer 35U. Fan blower blows fine, I just have cold air that doesn’t blow what so ever. I took a peek at my outside controller and the two black pieces that you replaced (Compressor #1&2 relays), were burned and melted( gotta change these out). I would also like to change out the mother board to the much simpler board. I appreciate the step by step instructions so I can mimic you while I install my board and relays. I will have to call a professional AC repair guy to have them take a look at my work before I turn it on so I don’t blow anything up. If you have any other advice before I start my project please let me know. Thanks!!!
AX EXPERT You seem very well versed with these units. I was loosing my mind when I seen you pulling all those wires off so fast. never would I remember where they went. I have issues with the same unit not blowing cold. my amp meter suggest that compressor number 1 is pulling 5 amps and number 2 is pulling 12amps, with clamp meter at the breaker box. leads me to believe its low on freon? your thoughts would be appreciated. thanks
Great information and informative. I have a 2005 Journey with blower motor bearing noise. The blower is the one blowing on the ground so a bit confused on how all of this works. Guessing its the compressor fan although its a squirrel cage? curious if motor can be replaced without pulling the unit. Why in the world they didn't put this on a slide is beyond me. Heating and cooling are awesome but worried about life of blower with all of the rattling going on.
Need a better look at capacitor connections I have the old board 2001 bought new caps but someone had been there before and one of the hard start caps popped I found the diagram or two not the same
I just bought a winnebago that has the 6535 and the compressors kick on 30sec apart, inside power draw system reads about 19-21 amps after startup. The air coming out of the ducts is about 15-18 degrees below inside temp but the living g area keeps getting hotter any ideas on what to check thanks for the great video was really interesting
It's very difficult to say. If you are on 50amp you should not have a reading, if you are on gas generator that may not be the true amp reading, if you are on 30amp with both compressors running that reading is too low.
@@AZExpert I broke into the unit today and have some more info turned on the system, which is 6535A871 and had indoor fan start then compressor 1 start, then after delay compressor 2 started running on the diesel generator. The indoor EMS unit says running on 30Amp. My clam on amp meter read 8.5 on compressor 2 and 5.5 - 6.5 on compressor 1 fluctuating. Seems like the charge may be low? Do you know if these units have test ports that are accessible...I couldn't see any, so was thinking maybe the unit needs removed to get access. It is blowing about 25-30degree split in the unit now. Bedroom vents nearer the unit were reading about 45deg, thermostat was at 79, living room vents were about 58-60. looks like compressor 1 has some kind of issue due to low amps. Any thoughts or help would be greatly appreciated.
Most of these do not have service ports installed, a few older models do. You would have to remove the unit to gain access to the service ports or to install one. Your EMS should be showing the generator running if it is running off the generator. But at any rate, the unit should be cooling "ok" with those numbers. Check the main trunk duct and make sure you are not losing your conditioned air to the outside from leaks.
Is there a web source to see layout/diagram for Coleman Basement ac on Winnebago RV? On Winnie forum a person suggests installing a supco spp6e e on Coleman to run parallel with run capacitor? What does AZ Expert say about that? In addition other winnie owner suggests if any start / run capacitor is older than 7 years spend the $20 to replace with new. What does AZ Expert say? So on basement ac if two compressors, each compressor has how many start/run capacitors? Two each compressor or one each compressor. If suppco spp6e is installed in parallel with run capcitor is there room? Would you know part #s in addition to quantity? Thanks for the educational videos and tech tips.
I have a 1995 Holiday Rambler Navagator with basement a/c. It just doesn't cool in the summer worth a darn. Am I expecting to much out of this type unit or should it keep it 70ish inside when running off the 10k diesel gen? Even when the weather is in the low 90s it just don't cool adequatly. I would think that when new at the cost of the coach, it would have kept it cold... I have not tried using it off 50amp power.Thank you!
I have the Coleman Mach #6535-671. Might have to replace compressor #1. Have you found a replacement for that compressor? Tecumseh?. This is on a 2005 Winnebago Adventurer (part 3105620-12-723 Panasonic). (RVP compressor # 1450-229.) Thanks for all your help. All your information is extremely helpful.
Thanks again.you've been so helpful. Pulled unit out of Winnebago.Verified compressors are both .good. Found pin hole leak at edge of condenser on # 1.System. Going to try to cut out a piece of the edge of condenser for access to braze the hole and recharge r-22. Otherwise I get to spend $$$$ for a new Coleman
Thank you for the great video! The heat pump in my 2002 Horizon suddenly stopped last fall (2020). After watching your video I was sufficiently motivated to look for the cause. I found one of the motor starter caps exploded and singed the circuit board and put a hole in one of the Supernol 7.5 uf next to it. My question is, with the newer PC board you mentioned the relays are all on the board, so do I still need to order new 1st and 2nd stage relays also? I’d like to change out anything that could cause problems in the near future (and I noticed you changed the one in this video). Thanks so much for posting this video!
Thank you for a great video and keeping up with the comments!! So much appreciated!!! I have a 2008 Winnebago Tour with a Coleman model 6537a671. I believe only one compressor is operating based on the amp draw on my EMS. Unfortunately, i believe this model is rare and i cannot find a replacement board. Can the 6535 board be modified to work with the 6537? I sure hope so.
I know this is an old video, but what the hay. I recently purchased a 2000 Chieftain in immaculate condition with only 42,000 miles. Being from Michigan, I don't think the AC was used that much and the generator has only 178 hours on it. Anyway my problem here in Florida is the AC does not cool the coach well when it is over 90° outside. Yesterday it was 98 outside and the best the ac could do inside was 89. I was wondering if I had the twin compressor model because my RV is a 30 amp. Any advice would be appreciated.
Looks very similar to my setup on the 07 Journey, question for you, which fan comes on first the Condenser Fan or the Evaporator Fan? which ever is first I get a bit of a growl/vibration that lasts for a couple seconds, then goes away. Would you think that is bearings going out or start capacitor that is wearing out?
my 2021 forest river , river ranch has this AC and has stopped blowing cold, it froze up ( Iced up , very humid here ) I let it set for a day still not blowing cold
I recently bought my first RV a 2006 Dolphin 5320 wit the Coleman basement AC/Heat pump. I am troubleshooting AC1 breaker tripping and/or the generator breaker tripping when the AC kicks on. The previous owner told me the capacitors needed to be replaced. When I have the 50 amp service switch on, the AC blows cold while the AC1 breaker is tripped. I assume that is telling me the #2 compressor works fine and my problem is on the #1 circuit, does that sound correct? Do you have a video troubleshooting an issue like I have?
Hello and thanks so much for this video! I am currently in Utah heading to Phoenix and my AC stopped working after I did some rinsing off of the condenser. I used a hose to rinse out the dust like I have done many times before. Now it seems not to be working. The light on the board is blinking green very fast. I have the 6535A871. When taking the panel off I noticed some water at the bottom where the 12/2 110 wiring comes in for the 1st circuit and 2nd circuit. The AC was working fine before. Now I cant get the AC or the heat to come on. My fan works on "ON" but nothing is working on Auto. My gas furnace comes on from the Tstat. I have tried the reset of the tstat too. I checked the service manual and found with the light blinking fast means thermistors may be open. How do I check that?
Love your videos, the one thing that I am wondering that you didnt mention was the red light on the board and its purpose, what it does? you explained the green lights is the red a warning? or letting you know stage 2 is on or ready?
Too bad Coleman didn't design this with servicing in mind by installing a pair of "super heavy duty drawer glides" on the unit. This would make it easier to service regardless of the make of the motorhome without the need to remove it from the motorhome, much like Onan does for various models of their generator sets. This would make it easier for the motorhome owner to slide out the a/c unit to clean the coils, lube the blower motor. etc.
Great videos! I have the same system in our 2004 Winnebago Journey 34H. Why would my thermostat be stuck on 99 no matter what the indoor temp is? The only thing that I can get to turn on is the indoor fan, both high and low work. Faulty thermostat? Replace?
So my neighbor got Model 46515 in his unit and got a service guy to check it and he told him the complete unit need to be changed, he check the amp and said that one of the compressor was toasted pulling to much amp, my question to you his how you test the Compressor with jump power, the're asking 5800.00 to replace it. Thanks
thats is a little high. If the other compressor is working, you can rewire the compressor to the working relay and capacitors...make sure you swap neutrals too. That would eliminate everything but the compressor being the issue. Do make sure the new unit is the same dimensions. Thanks!
Just a Line I want to Drop Of The reality. Of RV repair Persons;; ONLY the Facts.. My Basment air Quit working. I took it to a RV. Repair Shop. I got it Back Took a trip it Did not work. Darn $6000.00 Took it Back They Charged Me another $500.00 For a Thermastat. Had i seen Your Vedio I would have attemted The Repair. I still may do It as I have the Old Unit Here . They wanted $100.00 To Dispose Of It.. . Thanks you For all Your Postings.. My Only Commant is. The Best rv in The industry is the one You/i/we Own..
Awesome! You are the man. This is valuable information hat I could not find anywhere. I have a 1995 Winnebago with a basement heat pump. I am in California. Do you have a friend here that can help? My AC works , but the heat just blows room temp air. Can you help or send me to someone that can? Here in Fresno no one wants to work on this old unit. Thank you so much !!
Hi AZ Expert, I have a 1992 Winnebago Elante' which has the basement rear mounted AC unit from Coleman. I have recently found a Heat Pump (HP) version by Coleman with the same overall dimensions. I am considering changing out the original unit for the HP version so as to take advantage of the heating function when I am at RV parks I will still keep the propane furnace as backup on really cold periods. This is an attempt to save on propane usage. Any thoughts?
Thanks. What is the routine maintenance on these basement ac systems? If any? AC on my project seems to be working. Resurrecting a low miles 94 Vectra that's been sitting unused in storage. Owners manual does not really say.
My #1 compressor comes on maybe every 20 or 30 times that you try it. When it does comes on it works great. Does that sound like the board? Or do you have any other ideas? I've checked out the thermostat, replaced the lifeline (temporarily), replaced the start and run capacitors. Last time it started the outdoor blower failed to come on. So today I replaced the capacitor for the OD blower. The blower started up but the #1 compressor didn't feel like it was running. It did feel hot though. Unit was blowing warm air. Any advice would be appreciated! Thank you!
Hello!! I am in Texas and my 06 Winnebago basement AC is working on one compressor. I think I want to replace the whole unit because the heat pump is. O longer working either and it’s coming to the end of its life anyway. It is a 6535b871. My question is, where can I find a guide in replacing it without just taking it out and “hopefully” figuring it out. I am mechanically inclined, but I want this to be quick. Thanks for any help you can offer
We have a 2001 Winnebago 40 foot motor home, the ac is working somewhat but only pulling 10 amps and the heat of the day the motorhome just climb in heat inside what should I look for? there are no mechanics in my location. Can you share any information with me on what this may be?
It would be difficult to troubleshoot online, but each compressor should be pulling about 9 amps and the fan motors would add 4 to 5amps so it sounds like maybe only one compressor is running. If you are plugged into 30amps that's about all that will run you'd need 50amp or the generator. Obviously, check the air filter under the bed first.
question...If the air takes about 3-4 minutes to fire up would that normally be a Capacitor and is getting bad? everything else runs fine and blows cold. Same unit your working on in the video.
Mine is a 6535A871 Unit. It is a 30A system. Is the 6535C3209 the part number for the board itself or is that the # for the Unit? Can you get a board for mine? 2003 Winnie Adventurer 35U.
Hello nice video quick question my generator isn't working so I want to buy a generator to power this a/ c how many watts I need or which one will have enough power to turn it on
Working on this same unit right now, the fans and compressors kick on. Compressors start at about 8amps, then gradually climb over 2 minutes until they reach 20amps and then they cut off. Any ideas? Something other than just "seizing compressors"?
How do I get the Coleman basement heat pump out on a hydraulic lift table? I have disconnected everything, got under the motor home tried to push with my feet. NO Go... I've double checked everything for screws, bolts and stand by the fact it's disconnected and should slide out. I have all new parts and I"m ready to go to work!!!! Please help me AZ Expert!! Or anyone...
if it's a winnebago, there can be stops screwed in at the top, but if you have everything disconnected, including the clamping bolts that squeeze the a/c in place, sometimes the unit hangs up on screw heads underneath and it needs to be pryed up a little. They should slide fairly easily out.
Nice work James! My 2011 Tour features a similar unit with R410. Comp #1 only provides 7 deg evap drop. #2 kicks out 20+. Repair shop can't see me for four weeks. See any issue with swapping the compressor leads (6&8) at relays and the four board pins (ac1 & ac2) to make #2 come on first?
There should be no issue with swapping compressor leads(ie making stage one now stage two and vice versa). My one advice, if this is to be a more longlasting/temporary repair until you get to the shop would be to let the shop know you did that. Mechanically speaking, each compressor only uses half of the shared coils, so there is no real differerence between which one is the first stage or second stage. Thanks!
On hot days (85 degrees plus) my unit will stop blowing cold air (blower motor continues to run fine) after 2-4 hours of operation. I shut the unit down for a few hours and restart the unit and it works fine again. It doesn't happen all the time when it is that hot out, and has not happened when the temperature is below 80 degrees). I had an HVAC specialist test it and it checked out fine (both stages) and blew 50 degrees. But because it is an intermittent problem he wasn't able to test it when the problem occurred. When it occurred last time I could hear the compressor trying to start but cut off after a few seconds. Any ideas? Does this sound like a board or relay issue? It has happened while running the generator as well as when plugged into 50 Amp shore power.
I'd take an amp reading on the black lead to the first stage compressor. If its 0 than it's not being turned on, if it's 3-5 amps than there is likely no refrigerant, if it's 8-12 that's about normal, and if its above 20 than there is a mechanical fault with the compressor. I'd also like to make sure the exterior blower is operating you should feel air blowing down from a wire grate underneath. Thanks!
@@AZExpert Hello,do I take that amp reading with the unit on?And which black leads? Looks like there are 4 blk.wires from relays etc.How are the labeled on the board?Do I take the reading with the unit on or off? P.S.I just bought this coach last year w/29K miles on it.I sure don't want to have to repl.the unit if I can repair it...THANKS for all your expertise .I'm a retired mechanic.......BH
@@AZExpert Hello AZ,I finally got around to testing the amp reading on the black lead compressor...It read.75a,I also tested the orange lead compressor,it read the same .75a.Could it be the board/relays.My board # is 6535B320
It should work with all digital RVP thermostats, there are some older analog thermostats that may not be compatible but I am not sure as they are not as common.
Sounds like the motor capacitor is bad. I'm guessing it's the exterior blower wheel you're spinning and that capacitor is unfortunately mounted inside the unit next to the motor. Of course, if you're going to replace that, you might as well do the motor and bearing since you're in there.
AZ expert. You seem to know to know these really well. My ID blower only runs on hi. Even then, it only runs for about 10 minutes then the ID blower stops. Everything else is still going (OD blower still running). I have been trying to test that power is going to the blower and that the thermostat is sending the signal.
I would start at the control board outside and see if the board is sending power to the motor and if the motor works on low speed too. Winnebago has a strange 12vdc wiring that can shut off the high speed blower through the EMS, assuming you have a Winnebago, but that's where I would start.
@@AZExpert I have a Winnebago. I have been checking the voltages at the end of the lifeline on the PC board and it isn't matching the wiring diagram found on the service manual. The wires leaving the thermostat match the color of the diagram, but at the connector to the PC board, the colors are different and the pinout doesn't seem to match the diagram. It seems very unlikely that the wires were assembled incorrectly 15 years ago. Example, pin 9 (purple) shows 12 volts at the thermostat when fan is set to low. At the connector to the PC board, pin 9 does not show 12v and isn't purple. Does the ID blower motor have thermal protection built in that would shut itself off?
Hello Mr AZ. I have a 2000 Winnebago Sunflyer Itasca with the same AC. It stopped running yesterday. I went and pushed the reset switch and it made a loud grinding type sound which seems like it came from behind the front coils and then the noise went down a tad and it stopped. In in NV and its 115 degrees outside. so it really sucks. Any suggestions? Hope you see this as this video is 3 years old. Can the relays be bad ? or maybe its the motor. Thanks for your help.
sounds like compressors you can safely bypass the pressure switch by connecting the wires together on them to help troubleshoot, otherwise I'd be looking a floor ac with 2 duct hoses until you can come to a solution
@@AZExpert Yes Sir, you are correct. Do you know how much the compressors run? I probably could not afford it. For now I have a stand up TCl Portable Ac for the bedroom. The front room is 100 Plus degrees as I am in Southern NV.
I have this same model in my rv. Can the units be recharged? Mine is blowing cool air but during the day will struggle to maintain inside temp until the sun sets. Temp will climb slowly all day but then at some point will cool as the outside temp gets colder.
Question: I have a fairly new Coleman-Mach 46515-811 Series i bought and it runs at 30 amps. A little hard on the geni, is there a switch to only run one compressor while i am driving and both when i plug into shore power? 2000 Winnebago Itasca Sun Cruiser 30 amp system
It shouldn't be hard on the generator but Winnebago wired their 120vac a bit weird and it would be difficult to explain in comments whether it was 30 amp or 50 amp service.....but the easiest way would be to trip the 20amp breaker on your generator. Thanks!
These part came directly from RVP themselves. The relays are fairly generic AC parts that could be crossed over, but the low voltage coil is 12vdc not 24v. I have even found the relays on Amazon. The control board can usually be found online also, I'll have to check the video to see if I gave the part number. Thanks!
Hi James-Just wondering if you could work on my Coleman Mach basement ac-in a 2006 Itaska Suncruiser class a 35ft? I'm in the Atlanta Georgia area. Don't have confidence in locals to do the repair. If so, where is your shop? Thanks, John
easiest way is with a non-contact amp meter on each of the compressor legs(one black one orange) shoudl be at least 9 amps if running with a charge, less than 5 amps means there likely is no refrigerant.
Good job man ! Is there a way I could get in touch with you? I really need some help with my 1997alfa gold basement unit! I want to order the upgraded boards and thermostat for it but don't know how to find the model numbers and all the info I need! Ease if you can help me I would really appreciate it!
Mr. Expert my O.D.fan sounds like it might have bearing noise. I know if that is the case the only way to correct it is to replace the fan motor. I was an ac contractor for 30 years in the Phoenix area so I kind of recognize the noise. Can the blower assembly be removed by removing the bed and taking it up through the top of the A/C without removing the A/C assembly? I have a 2002 32 TD Itasca. I now live in San Tan Valley not far from Apache junction. Wade Swainston
no, the subfloor would have to be cut with a A/C sized access hole, there will be steel framing in the way and then the top of the A/C housing would still be in the way. Sorry to say, dropping the A/C is the best and easiest way. Thanks!
@@AZExpert So I unplugged from the campsite and fired up the generator and I herd the second compressor kick in and it got cold do you think it is a receptical issue
@@AZExpert Any chance we can schedule something with you or do you know of a good place that can do the repair here is Arizona? We are located in Goodyear. Thanks!
Hello, Thanks for the great vid! Please let me know where I can buy this board for my Motorhome All of them I have found say there are no instructions with the new board? My unit is a 6535-871. 6535C3209 Board. I have a 2000 Itasca suncruiser MH. Thanks again Chris
I bought a1993 winnebago with a 6795 series and it will run for 13 min and thin my inside fan cuts off and two min later the unit shuts off. when its running it blows cold and it makes no nose at all . can you help! and it has no just relays can i change to a board.
im back I bought a amp clamp and on black wire it started at 12amps + or- .20 and then it climbed to 15 amps over 8 min. then droped to 8 amps and slowly droped to 7.5 amps. the org. wire read 12amps and did not change. then at 13 min one of the relays or something click and stoped running
its mike scott i got a amp clamp and first took readings on blk. and ong. wires comming rit off my input lines and was reading my fan and my comp. amps. so when i went on my lines going to comp. thay both red 8.5 amps to 9 . so my inside fan is pulling rufly 6 amps is that the norm?
*Solid, **Fastly.Cool** and gets the job done. For rooms where window-mounted air conditioning is not an option, this works very well. Easy set up, rapid cooling, and great design.*
Cool
Hello. Your combination of knowledge, skill, work ethic, and demeanor is simply outstanding. I feel like you are a very rare breed in terms of finding an honest, knowledgeable, hard working RV technician. I enjoy your videos tremendously. Thank you, and keep up the great work!
Wow, thank you very much. I think that's far more praise than I deserve, but I am happy you enjoy the videos!!
I second this!!!
agree 100!!
I third this!!
Wear black gloves and the camera will expose the frame to compensate, meaning the shadowy areas in the control box will show up better. When you wear white gloves the frame becomes much darker making it harder to see everything.
Thank you for making these videos. I’m a first time owner and they have helped me immensely.
AZ expert, I appreciate all you folks that share your knowledge. I have the same unit that you are working on in this video . Coleman Mach 6535 basement AC. I’ve replaced all the capacitors, bearings on the fan motors, the #2 compressor relay. With a buddy’s help we replaced the circuit board after watching your video and following the instructions that came with it. I had an AC tech out who did a cursory inspection and he said the compressors looked good and that the board was probably bad so I ordered one and found your video. It’s still doing the same thing. I set the thermostat for one degree below the interior temp and switch it on, runs fine cools down to that temp and I move the thermostat 1 degree lower. If I go to 2+ degrees the second compressor come on , the exterior fan cuts off and the unit keeps drawing power until it is pulling 31 amps. Then it shuts down. Also if it is hotter (midday) and humid even though it’s only 1 degree below and the #2 compressor doesn’t come on it will pop the red reset button after 15 minutes. Any Ideas what I should try next? Thanks /
the exterior fan stops running? That needs to be running whenever the compressor is running.
Did you ever figure this out? I’m having the same problem
@@AZExpertI have the same unit and problem and my exterior blower fan is not running. What could it be?
I have a 2000 Winnebago Adventurer that needs the board and where to you get it?
James your knowledge always amazes me. I watched this as I am looking at a 07 with basement air. Not a Winnebago though. Many on different forums say they like the basement air. Thanks for all you do for the RV community.
Great videos. I've been in the construction industry for many years, have been a home inspector and am a plant engineer. It's amazing how much gets done wrong on something brand new, how bad a good intentioned owner can screw something up and how poorly "experts" can troubleshoot. Nice work.
That is very high praise. Thank you. I get it wrong often too though.
*Great product **Fastly.Cool** so far*
Thanks for watching!
First I want to thank you for such great content. I have a 2002 Winnebago Adventurer with basement dual heat pumps. I have been having an issue with compressors not running correctly. I found your video and I ordered two relays and the updated control board. After watching your video and reviewing the instruction I installed the board and relays today. Works like a champ. It was original board and as you showed my board also had been super heating at resistors. New board is so much simpler. Thank you again.
Awesome!
Which board did you order? Can you please leave the link to the new board in the comment section? Thanks!!
My head is spinning watching you pull those wires!
I have an '02 Adventurer 35U with the Coleman Mach Basement System (6535-A Board). The fans run in the coach fine, but compressor #1 does not kick on. Power management readout always shows between 1-3 amps depending what's on when I've been troubleshooting it (off my Generator).
So far, I have replaced all 5 capacitors (2 new hard start kits, 2 motor run capacitors, and the fan capacitor), checked ohms on all compressor lead combinations (showing no issues) as well as jumping both the indoor and outdoor coil sensor to test for a possible temperature safety lock-out. All have produced no positive results, and I still have the green LED light rapid flashing.
I've contacted a couple of buddies that deal in hvac, and they asked if I could check the refrigerant levels, but I don't think there is anywhere to verify that on these models, correct?
What else could I be missing?
Hi! Txs for the video! I have a 2000 winnebago Adventurer and A/C is not working at all. Will try to buy some parts and go from there since we live far from the city and can’t find anybody to work on those issues. Appreciate very much all the instructions.
just replaced my power board(only one compressor would run) thanks to your video Avery thing working awesome.your info was great
I have an ‘05 Itasca Suncruiser with this Coleman-Mach system. Compressor failed a couple weeks ago and luckily I found a replacement compressor for $600. Problem is finding anyone to even attempt the work right now. I don’t even know what Freon to put in it. I wish I could find someone with your knowledge in my area to help me out! I’d really like to have my AC working in Florida. Thanks for the videos.
Very good James. Enjoyed your video. Happy trails!
Thanks Phil :)
James I know this is fairly old but I believe I have this same unit in my Meridian. I am running 20-30 amp and my ac seems ok until the temp hits about 100 outside. I am going through and putting shades on windows etc but it gets about 95 degrees during the day. That seems excessive with this type of system.
What a great tutorial. I just bought a 2000 Winnebago as my first RV and have a lot to learn. My first step was to upgrade to 50 amp service. The ATS was 50 amp from the factory and your are right their 30 amp wiring was a complete mess. I ripped it out and wired direct to AC from the breaker box. Thank goodness I found this video because now I know I have the new circuit board and that the old diagram is invalid. And the mystery of 4 blinks on the green led is solved. My first AC problem was a broken / loose setscrew on the power input. I didn't like the cheap terminal board at all and replaced it along with the run caps and start caps and PTCs. Finally the primary compressor works. But number 2 appears to be locked up drawing a large current until the thermal switch cuts out.. Thanks to your other video I will pull out the unit and take a look at it. How critical is getting an exact replacement for the compressor?
Thank you! I'm glad it helped....but yes Winnebago did a very strange 30amp wiring for the basement A/C to work with a 5500 watt generator but 30amp service.
@@AZExpert Yep compressor 2 was locked up because the copper tube on the suction side cracked and all the freon escaped a long time ago. The previous owner didn't know anything about it and had paid someone $600 to fix it when he bought it in December. I assume the AC tech didn't know anything about basement AC units so when he replaced the board and it ran on one compressor and it was December. I certainly didn't know there were two compressors when I test drove it. What a shame that Coleman dropped the low pressure switch. I have ordered two that screw on to the Schrader valves to protect the compressors in the future. This is an insidious problem because if the freon leaks out slowly you are almost guaranteed to burn up a compressor before the average person would notice. Bad engineering to save a few dollars.
Great Video! I wish my unit would cool that well!
I would tell you to check the retangular duct behind the rear cap for cold air leaks.
An excellent instructional video. So much hands on information and insight. Thanks.
You're welcome!
I have an ‘02 Winnebago Adventurer 35U. Fan blower blows fine, I just have cold air that doesn’t blow what so ever. I took a peek at my outside controller and the two black pieces that you replaced (Compressor #1&2 relays), were burned and melted( gotta change these out). I would also like to change out the mother board to the much simpler board. I appreciate the step by step instructions so I can mimic you while I install my board and relays. I will have to call a professional AC repair guy to have them take a look at my work before I turn it on so I don’t blow anything up. If you have any other advice before I start my project please let me know. Thanks!!!
Very good Mr. AZ Expert. Thanks for walking us thru.........
you are very welcome.
AX EXPERT
You seem very well versed with these units. I was loosing my mind when I seen you pulling all those wires off so fast. never would I remember where they went. I have issues with the same unit not blowing cold. my amp meter suggest that compressor number 1 is pulling 5 amps and number 2 is pulling 12amps, with clamp meter at the breaker box. leads me to believe its low on freon? your thoughts would be appreciated. thanks
Excellent. fear factor with the AC in my Vectra down bigtime.
Great information and informative. I have a 2005 Journey with blower motor bearing noise. The blower is the one blowing on the ground so a bit confused on how all of this works. Guessing its the compressor fan although its a squirrel cage? curious if motor can be replaced without pulling the unit. Why in the world they didn't put this on a slide is beyond me. Heating and cooling are awesome but worried about life of blower with all of the rattling going on.
Need a better look at capacitor connections I have the old board 2001 bought new caps but someone had been there before and one of the hard start caps popped I found the diagram or two not the same
I just bought a winnebago that has the 6535 and the compressors kick on 30sec apart, inside power draw system reads about 19-21 amps after startup. The air coming out of the ducts is about 15-18 degrees below inside temp but the living g area keeps getting hotter any ideas on what to check thanks for the great video was really interesting
It's very difficult to say. If you are on 50amp you should not have a reading, if you are on gas generator that may not be the true amp reading, if you are on 30amp with both compressors running that reading is too low.
@@AZExpert I broke into the unit today and have some more info turned on the system, which is 6535A871 and had indoor fan start then compressor 1 start, then after delay compressor 2 started running on the diesel generator. The indoor EMS unit says running on 30Amp. My clam on amp meter read 8.5 on compressor 2 and 5.5 - 6.5 on compressor 1 fluctuating. Seems like the charge may be low? Do you know if these units have test ports that are accessible...I couldn't see any, so was thinking maybe the unit needs removed to get access. It is blowing about 25-30degree split in the unit now. Bedroom vents nearer the unit were reading about 45deg, thermostat was at 79, living room vents were about 58-60. looks like compressor 1 has some kind of issue due to low amps. Any thoughts or help would be greatly appreciated.
Most of these do not have service ports installed, a few older models do. You would have to remove the unit to gain access to the service ports or to install one. Your EMS should be showing the generator running if it is running off the generator. But at any rate, the unit should be cooling "ok" with those numbers. Check the main trunk duct and make sure you are not losing your conditioned air to the outside from leaks.
4 thumbs up on that job James.
Thanks. It's nice to have a job go right once in a while.
Is there a web source to see layout/diagram for Coleman Basement ac on Winnebago RV? On Winnie forum a person suggests installing a supco spp6e e on Coleman to run parallel with run capacitor? What does AZ Expert say about that?
In addition other winnie owner suggests if any start / run capacitor is older than 7 years spend the $20 to replace with new. What does AZ Expert say?
So on basement ac if two compressors, each compressor has how many start/run capacitors? Two each compressor or one each compressor. If suppco spp6e is installed in parallel with run capcitor is there room?
Would you know part #s in addition to quantity? Thanks for the educational videos and tech tips.
the compressors already have hard start capacitors. You're welcome
I have a 1995 Holiday Rambler Navagator with basement a/c. It just doesn't cool in the summer worth a darn. Am I expecting to much out of this type unit or should it keep it 70ish inside when running off the 10k diesel gen? Even when the weather is in the low 90s it just don't cool adequatly. I would think that when new at the cost of the coach, it would have kept it cold... I have not tried using it off 50amp power.Thank you!
I have the Coleman Mach #6535-671. Might have to replace compressor #1. Have you found a replacement for that compressor? Tecumseh?. This is on a 2005 Winnebago Adventurer (part 3105620-12-723 Panasonic). (RVP compressor # 1450-229.) Thanks for all your help. All your information is extremely helpful.
It's been difficult to locate parts as no one is currently answering my phone calls right now.
Thanks again.you've been so helpful. Pulled unit out of Winnebago.Verified compressors are both .good. Found pin hole leak at edge of condenser on # 1.System. Going to try to cut out a piece of the edge of condenser for access to braze the hole and recharge r-22. Otherwise I get to spend $$$$ for a new Coleman
Thank you for the great video! The heat pump in my 2002 Horizon suddenly stopped last fall (2020). After watching your video I was sufficiently motivated to look for the cause. I found one of the motor starter caps exploded and singed the circuit board and put a hole in one of the Supernol 7.5 uf next to it. My question is, with the newer PC board you mentioned the relays are all on the board, so do I still need to order new 1st and 2nd stage relays also? I’d like to change out anything that could cause problems in the near future (and I noticed you changed the one in this video). Thanks so much for posting this video!
the square relays for the compressors are still used yes. the relays on the board are not for the compressors and could not handle the amperage
Good gracious looks like you’ve done that a few times Mr James if you can remember where everything goes
a few times :)
Thank you for a great video and keeping up with the comments!! So much appreciated!!! I have a 2008 Winnebago Tour with a Coleman model 6537a671. I believe only one compressor is operating based on the amp draw on my EMS. Unfortunately, i believe this model is rare and i cannot find a replacement board. Can the 6535 board be modified to work with the 6537? I sure hope so.
The boards are the same. Thanks!
@@AZExpert Thank you so much!! I really appreciate your help!!
I know this is an old video, but what the hay.
I recently purchased a 2000 Chieftain in immaculate condition with only 42,000 miles. Being from Michigan, I don't think the AC was used that much and the generator has only 178 hours on it. Anyway my problem here in Florida is the AC does not cool the coach well when it is over 90° outside. Yesterday it was 98 outside and the best the ac could do inside was 89. I was wondering if I had the twin compressor model because my RV is a 30 amp. Any advice would be appreciated.
What the cost of doing this service on basement air conditioner?
Looks very similar to my setup on the 07 Journey, question for you, which fan comes on first the Condenser Fan or the Evaporator Fan? which ever is first I get a bit of a growl/vibration that lasts for a couple seconds, then goes away. Would you think that is bearings going out or start capacitor that is wearing out?
Impressive you have done well
my 2021 forest river , river ranch has this AC and has stopped blowing cold, it froze up ( Iced up , very humid here ) I let it set for a day still not blowing cold
I recently bought my first RV a 2006 Dolphin 5320 wit the Coleman basement AC/Heat pump. I am troubleshooting AC1 breaker tripping and/or the generator breaker tripping when the AC kicks on. The previous owner told me the capacitors needed to be replaced. When I have the 50 amp service switch on, the AC blows cold while the AC1 breaker is tripped. I assume that is telling me the #2 compressor works fine and my problem is on the #1 circuit, does that sound correct? Do you have a video troubleshooting an issue like I have?
Hello and thanks so much for this video! I am currently in Utah heading to Phoenix and my AC stopped working after I did some rinsing off of the condenser. I used a hose to rinse out the dust like I have done many times before. Now it seems not to be working. The light on the board is blinking green very fast. I have the 6535A871. When taking the panel off I noticed some water at the bottom where the 12/2 110 wiring comes in for the 1st circuit and 2nd circuit. The AC was working fine before. Now I cant get the AC or the heat to come on. My fan works on "ON" but nothing is working on Auto. My gas furnace comes on from the Tstat. I have tried the reset of the tstat too. I checked the service manual and found with the light blinking fast means thermistors may be open. How do I check that?
Love your videos, the one thing that I am wondering that you didnt mention was the red light on the board and its purpose, what it does? you explained the green lights is the red a warning? or letting you know stage 2 is on or ready?
Too bad Coleman didn't design this with servicing in mind by installing a pair of "super heavy duty drawer glides" on the unit. This would make it easier to service regardless of the make of the motorhome without the need to remove it from the motorhome, much like Onan does for various models of their generator sets. This would make it easier for the motorhome owner to slide out the a/c unit to clean the coils, lube the blower motor. etc.
Amen to that.
Great videos! I have the same system in our 2004 Winnebago Journey 34H. Why would my thermostat be stuck on 99 no matter what the indoor temp is? The only thing that I can get to turn on is the indoor fan, both high and low work. Faulty thermostat? Replace?
Ran into this type and make of condensing unit. Is there any problem running the ac if only hooked up to 30 amp. The rig is a 50 amp.
How did you test the compressor to make sure it was still good without pulling the unit?
So my neighbor got Model 46515 in his unit and got a service guy to check it and he told him the complete unit need to be changed, he check the amp and said that one of the compressor was toasted pulling to much amp, my question to you his how you test the Compressor with jump power, the're asking 5800.00 to replace it. Thanks
thats is a little high. If the other compressor is working, you can rewire the compressor to the working relay and capacitors...make sure you swap neutrals too. That would eliminate everything but the compressor being the issue. Do make sure the new unit is the same dimensions. Thanks!
Just a Line I want to Drop Of The reality. Of RV repair Persons;; ONLY the Facts.. My Basment air Quit working. I took it to a RV. Repair Shop. I got it Back Took a trip it Did not work. Darn $6000.00 Took it Back They Charged Me another $500.00 For a Thermastat. Had i seen Your Vedio I would have attemted The Repair. I still may do It as I have the Old Unit Here . They wanted $100.00 To Dispose Of It.. . Thanks you For all Your Postings.. My Only Commant is. The Best rv in The industry is the one You/i/we Own..
I would love to have you look at our unit. 2004 Winnebago Vectra., Ever in the Bullhead city area? Need your expertise.
I am not sadly
whats the part # of the new kit.......that one your pulling looks like what I have
Awesome! You are the man. This is valuable information hat I could not find anywhere. I have a 1995 Winnebago with a basement heat pump. I am in California. Do you have a friend here that can help? My AC works , but the heat just blows room temp air. Can you help or send me to someone that can? Here in Fresno no one wants to work on this old unit. Thank you so much !!
unfortunately, I don't have anyone I could recommend in California. I am sorry.
Hi AZ Expert, I have a 1992 Winnebago Elante' which has the basement rear mounted AC unit from Coleman. I have recently found a Heat Pump (HP) version by Coleman with the same overall dimensions. I am considering changing out the original unit for the HP version so as to take advantage of the heating function when I am at RV parks I will still keep the propane furnace as backup on really cold periods. This is an attempt to save on propane usage. Any thoughts?
Thanks. What is the routine maintenance on these basement ac systems? If any? AC on my project seems to be working. Resurrecting a low miles 94 Vectra that's been sitting unused in storage. Owners manual does not really say.
There is no routine maintenance other than replacing the air filter. the motors are not accessible to oil. Thanks!
My #1 compressor comes on maybe every 20 or 30 times that you try it. When it does comes on it works great. Does that sound like the board? Or do you have any other ideas? I've checked out the thermostat, replaced the lifeline (temporarily), replaced the start and run capacitors. Last time it started the outdoor blower failed to come on. So today I replaced the capacitor for the OD blower. The blower started up but the #1 compressor didn't feel like it was running. It did feel hot though. Unit was blowing warm air. Any advice would be appreciated! Thank you!
i have a 2004 winnebago and the circuit board is flashing a green light have you delt with that and have any clue of what it could be?
Hello!!
I am in Texas and my 06 Winnebago basement AC is working on one compressor. I think I want to replace the whole unit because the heat pump is. O longer working either and it’s coming to the end of its life anyway.
It is a 6535b871.
My question is, where can I find a guide in replacing it without just taking it out and “hopefully” figuring it out. I am mechanically inclined, but I want this to be quick. Thanks for any help you can offer
We have a 2001 Winnebago 40 foot motor home, the ac is working somewhat but only pulling 10 amps and the heat of the day the motorhome just climb in heat inside what should I look for? there are no mechanics in my location. Can you share any information with me on what this may be?
It would be difficult to troubleshoot online, but each compressor should be pulling about 9 amps and the fan motors would add 4 to 5amps so it sounds like maybe only one compressor is running. If you are plugged into 30amps that's about all that will run you'd need 50amp or the generator. Obviously, check the air filter under the bed first.
question...If the air takes about 3-4 minutes to fire up would that normally be a Capacitor and is getting bad? everything else runs fine and blows cold. Same unit your working on in the video.
There is a time delay on the thermostat before the unit turns on, is that what you are describing?
@@AZExpert yes exactly, just seams extremely long, like 5 minutes.
sounds like it working. The board in the basement has an LED that will blink slowly if it is in time delay
I have the same model AC , I would like to know how to jump start the second compressor . So i can see if i have a bad board or not .
Can I still find parts for a 1995 Vectra ? I’m being told I have to change the whole system by some repair people…
Mine is a 6535A871 Unit. It is a 30A system. Is the 6535C3209 the part number for the board itself or is that the # for the Unit? Can you get a board for mine? 2003 Winnie Adventurer 35U.
Where did you get the board replacement kit?
Where you get the new board
Hello nice video quick question my generator isn't working so I want to buy a generator to power this a/ c how many watts I need or which one will have enough power to turn it on
Do you have a video on how to change the compositor on a basement air conditioner on a 94 Winnebago vectra?
yes. th-cam.com/video/vPYAH_fuaFk/w-d-xo.html
Working on this same unit right now, the fans and compressors kick on. Compressors start at about 8amps, then gradually climb over 2 minutes until they reach 20amps and then they cut off. Any ideas? Something other than just "seizing compressors"?
How do I get the Coleman basement heat pump out on a hydraulic lift table? I have disconnected everything, got under the motor home tried to push with my feet. NO Go... I've double checked everything for screws, bolts and stand by the fact it's disconnected and should slide out. I have all new parts and I"m ready to go to work!!!! Please help me AZ Expert!! Or anyone...
if it's a winnebago, there can be stops screwed in at the top, but if you have everything disconnected, including the clamping bolts that squeeze the a/c in place, sometimes the unit hangs up on screw heads underneath and it needs to be pryed up a little. They should slide fairly easily out.
Nice work James! My 2011 Tour features a similar unit with R410. Comp #1 only provides 7 deg evap drop. #2 kicks out 20+. Repair shop can't see me for four weeks. See any issue with swapping the compressor leads (6&8) at relays and the four board pins (ac1 & ac2) to make #2 come on first?
There should be no issue with swapping compressor leads(ie making stage one now stage two and vice versa). My one advice, if this is to be a more longlasting/temporary repair until you get to the shop would be to let the shop know you did that. Mechanically speaking, each compressor only uses half of the shared coils, so there is no real differerence between which one is the first stage or second stage. Thanks!
Mine runs and blows air but not cold what you recommend checking ?. Using generator not plugged in havent yet tested ac plugged in
the first check is to see if either compressor is running
I need to know what that kit is and where to get it
On hot days (85 degrees plus) my unit will stop blowing cold air (blower motor continues to run fine) after 2-4 hours of operation. I shut the unit down for a few hours and restart the unit and it works fine again. It doesn't happen all the time when it is that hot out, and has not happened when the temperature is below 80 degrees). I had an HVAC specialist test it and it checked out fine (both stages) and blew 50 degrees. But because it is an intermittent problem he wasn't able to test it when the problem occurred. When it occurred last time I could hear the compressor trying to start but cut off after a few seconds. Any ideas? Does this sound like a board or relay issue? It has happened while running the generator as well as when plugged into 50 Amp shore power.
it would be difficult to troubleshoot here. It could be something as simple as a freeze switch that is bad or a compressor. Sorry
@@AZExpert thanks. Really love your videos, and appreciate your humble demeanor!
thank you.
Where did you find the control board?
Hey James! How did you jump the board to determine it was faulty?
As a 30 year HVAC tech nice job, and don’t do this at home unless u can read Schematics
thank you, I'd be lost on a home unit for sure though
I have a coleman 6795 and I need a board for it. I was told part # 6795-3151 I can't seem to find one anywhere. Is there a kit or and upgraded one?
How do I know for sure if both of my compressors are running?
My 2005 Winnebago journey quit blowing cold.What should I look for first in diagnosing the problem ?
I'd take an amp reading on the black lead to the first stage compressor. If its 0 than it's not being turned on, if it's 3-5 amps than there is likely no refrigerant, if it's 8-12 that's about normal, and if its above 20 than there is a mechanical fault with the compressor. I'd also like to make sure the exterior blower is operating you should feel air blowing down from a wire grate underneath. Thanks!
@@AZExpert Hello,do I take that amp reading with the unit on?And which black leads? Looks like there are 4 blk.wires from relays etc.How are the labeled on the board?Do I take the reading with the unit on or off? P.S.I just bought this coach last year w/29K miles on it.I sure don't want to have to repl.the unit if I can repair it...THANKS for all your expertise .I'm a retired mechanic.......BH
@@AZExpert Hello AZ,I finally got around to testing the amp reading on the black lead compressor...It read.75a,I also tested the orange lead compressor,it read the same .75a.Could it be the board/relays.My board # is 6535B320
I have the same A/C but mind will not start. Only the fan comes on. I have checked breakers and pushed the reset button on the unit. Any ideas
I have a 2000 Winnebago Adventurer and i need the board and relays
Do you need to change to a different thermostat?
It should work with all digital RVP thermostats, there are some older analog thermostats that may not be compatible but I am not sure as they are not as common.
I have 2000 winnebago adventurer 32u when I select fan on and ac on . Nothing happens , what s hi would I check for ? Power to blower or compressor?
in the wiring bay at the bottom are the two 120vac leads coming in. That's where you'd start looking for power.
Hi, Do you have a source to get Coleman basement unit parts?
Would love some help with mine it works fine if I get under it and spin the fan by hand to get it started but wont start on it's own.
Sounds like the motor capacitor is bad. I'm guessing it's the exterior blower wheel you're spinning and that capacitor is unfortunately mounted inside the unit next to the motor. Of course, if you're going to replace that, you might as well do the motor and bearing since you're in there.
AZ expert. You seem to know to know these really well. My ID blower only runs on hi. Even then, it only runs for about 10 minutes then the ID blower stops. Everything else is still going (OD blower still running). I have been trying to test that power is going to the blower and that the thermostat is sending the signal.
I would start at the control board outside and see if the board is sending power to the motor and if the motor works on low speed too. Winnebago has a strange 12vdc wiring that can shut off the high speed blower through the EMS, assuming you have a Winnebago, but that's where I would start.
@@AZExpert I have a Winnebago. I have been checking the voltages at the end of the lifeline on the PC board and it isn't matching the wiring diagram found on the service manual. The wires leaving the thermostat match the color of the diagram, but at the connector to the PC board, the colors are different and the pinout doesn't seem to match the diagram. It seems very unlikely that the wires were assembled incorrectly 15 years ago. Example, pin 9 (purple) shows 12 volts at the thermostat when fan is set to low. At the connector to the PC board, pin 9 does not show 12v and isn't purple.
Does the ID blower motor have thermal protection built in that would shut itself off?
the fan has three wires red, white, and black, white is common, black is high speed and red is low speed. these will be 120vac
@@AZExpert Is it safe to swap the high and low motor wires to the PC board? I'm thinking this will confirm that the "low" mode on the motor is broken.
yes it is safe to swap the black and red wires
Hello Mr AZ. I have a 2000 Winnebago Sunflyer Itasca with the same AC. It stopped running yesterday. I went and pushed the reset switch and it made a loud grinding type sound which seems like it came from behind the front coils and then the noise went down a tad and it stopped. In in NV and its 115 degrees outside. so it really sucks. Any suggestions?
Hope you see this as this video is 3 years old. Can the relays be bad ? or maybe its the motor.
Thanks for your help.
sounds like compressors you can safely bypass the pressure switch by connecting the wires together on them to help troubleshoot, otherwise I'd be looking a floor ac with 2 duct hoses until you can come to a solution
@@AZExpert Thank you so much
@@AZExpert Yes Sir, you are correct. Do you know how much the compressors run? I probably could not afford it. For now I have a stand up TCl Portable Ac for the bedroom. The front room is 100 Plus degrees as I am in Southern NV.
how does the electric heater work on the same unit ?????
This A/C is a heat pump, so it has a reversing valve to change the direction of refrigerant to move heat either direction.
I have this same model in my rv. Can the units be recharged? Mine is blowing cool air but during the day will struggle to maintain inside temp until the sun sets. Temp will climb slowly all day but then at some point will cool as the outside temp gets colder.
I am having the same issue, did you ever figure yours out?
Can somebody tell me how to open the side radiator grill and a/c grill on this 2000 ultimate freedom 40 ft mh
Where can I order the New board ,relays and capacitors from Part #
Google is your friend
How do you test the freeze sensor?
Question: I have a fairly new Coleman-Mach 46515-811 Series i bought and it runs at 30 amps. A little hard on the geni, is there a switch to only run one compressor while i am driving and both when i plug into shore power?
2000 Winnebago Itasca Sun Cruiser 30 amp system
It shouldn't be hard on the generator but Winnebago wired their 120vac a bit weird and it would be difficult to explain in comments whether it was 30 amp or 50 amp service.....but the easiest way would be to trip the 20amp breaker on your generator. Thanks!
The manual says even on my vectra that generator runs both compressors and shore power only runs 1
Awesome video and great job!!!Where did you get the parts?
These part came directly from RVP themselves. The relays are fairly generic AC parts that could be crossed over, but the low voltage coil is 12vdc not 24v. I have even found the relays on Amazon. The control board can usually be found online also, I'll have to check the video to see if I gave the part number. Thanks!
I'll get those part numbers put in the description.
where can i get a new electronic board
Hi James-Just wondering if you could work on my Coleman Mach basement ac-in a 2006 Itaska Suncruiser class a 35ft? I'm in the Atlanta Georgia area. Don't have confidence in locals to do the repair. If so, where is your shop? Thanks, John
I would work on it however, my shop is in Apache Junction, AZ.
I just bought a winnebago vectra 1996 if I take that panel off how can test to see if both compressors are turning on?
easiest way is with a non-contact amp meter on each of the compressor legs(one black one orange) shoudl be at least 9 amps if running with a charge, less than 5 amps means there likely is no refrigerant.
Good job man ! Is there a way I could get in touch with you? I really need some help with my 1997alfa gold basement unit! I want to order the upgraded boards and thermostat for it but don't know how to find the model numbers and all the info I need! Ease if you can help me I would really appreciate it!
there should be a data sheet either on the access door or the rear side of the unit.
Can i use any relays?
the coils are 12vdc but should be easy to find
Mr. Expert my O.D.fan sounds like it might have bearing noise. I know if that is the case the only way to correct it is to replace the fan motor. I was an ac contractor for 30 years in the Phoenix area so I kind of recognize the noise. Can the blower assembly be removed by removing the bed and taking it up through the top of the A/C without removing the A/C assembly? I have a 2002 32 TD Itasca. I now live in San Tan Valley not far from Apache junction.
Wade Swainston
no, the subfloor would have to be cut with a A/C sized access hole, there will be steel framing in the way and then the top of the A/C housing would still be in the way. Sorry to say, dropping the A/C is the best and easiest way. Thanks!
I have a problem we a basement unit not cooling. The compressor kicks in and gets cool not cold. It's a 6535-185
My cell is 3869374308 if you have time for a call
sounds like you have a refrigerant leak unfortunately. A compressor with no load(refrigerant) will pull 2.5 to 4 amps.
@@AZExpert
So I unplugged from the campsite and fired up the generator and I herd the second compressor kick in and it got cold do you think it is a receptical issue
Just came across this video. Do you still do Winnebago floor AC repairs? If so, where are you located?
I am located in Mesa, AZ. I do repairs when the schedule allows
@@AZExpert Any chance we can schedule something with you or do you know of a good place that can do the repair here is Arizona? We are located in Goodyear.
Thanks!
Hello, Thanks for the great vid! Please let me know where I can buy this board for my Motorhome All of them I have found say there are no instructions with the new board? My unit is a 6535-871. 6535C3209 Board. I have a 2000 Itasca suncruiser MH. Thanks again Chris
the board is available on Amazon
I bought a1993 winnebago with a 6795 series and it will run for 13 min and thin my inside fan cuts off and two min later the unit shuts off. when its running it blows cold and it makes no nose at all . can you help! and it has no just relays can i change to a board.
If I understand you correctly, when it runs it blow cool and then turns off. I would wonder if the outside blower is operating first?
@@AZExpert yes i pulled it out and removed the top and cleaned it out . it was vary clean as is the whole rv .and both fans was running
im back I bought a amp clamp and on black wire it started at 12amps + or- .20 and then it climbed to 15 amps over 8 min. then droped to 8 amps and slowly droped to 7.5 amps. the org. wire read 12amps and did not change. then at 13 min one of the relays or something click and stoped running
its mike scott i got a amp clamp and first took readings on blk. and ong. wires comming rit off my input lines and was reading my fan and my comp. amps. so when i went on my lines going to comp. thay both red 8.5 amps to 9 . so my inside fan is pulling rufly 6 amps is that the norm?
just wanted to say thanks love your videos ill keep wacthing. it was my inside fan . best 15 $ amp clamp i ever bought
Ive just chaged the new c.b but blinks 4 times?
www.rvcomfort.com/pdf_documents/1976323_copy8.pdf