One of my first refrigeration calls I've ever got was smoke smell in walk in cooler. Unit was running and maintaining temp in arrival. I tore the thing apart checking every wire and component but couldn't find anything even slightly irregular. That's when one of the new employees who didn't know I was in there strolls in cigarette in hand... Needless to say that was the last time he did that or anything else at that location as he was asked to leave permanently.
love your videos Chris. Youre one of the best HVACR guys ive ever seen.. keep up the great work! Ive learned so much from watching these. Thank you for taking the time to make them
Great videos, learning a lot. I worked as an electronic tech for 20 years and decided to walk away. I started working for a Temp company that deals in the trades. So the last 18 months I have worked in HVAC, Electrical and excavation. Got a call from a company a few days ago and asked me if I was willing to interview for a service position in commercial refrigeration. I told them I never worked in that field and they stated we think you would be a good candidate to be able to learn and excel here. Interview is in a couple days so I been watching videos when ever I have free time. So anyways, thanks for the great videos.
Thanks for the videos. I’m going to Hvac school while being a restaurant owner and the cook still got a lot to learn but this video bout fan limit switches was very helpful cause I was having the same trouble thanks a lot great job
if there's no phase monitor/protector, one phase dropped could allow the motors to run on low voltage via back-feed through other equipment in the building or more. Always good to ask if they had any power issues in the area and visually inspect all wiring/devices from the equipment back to source breaker/panel.
Good call sir ! I have this same this problem it was fan motor burned out due bad FDTD switch. I did spent in walk in freezer for hours to found out. I turned defrost clock into defrost and timing defrost ended and fan was run right away as the moisture blow out. I can see the little spark on motor. Replaced FDTD switch and fan motor just like you did that. Good video as always Chris
Exellent video ! Just a request if it posible with that same system a wiring diagram follow up would be great !! I love your videos ! You would be a great teacher for hvac school ! I went to LATT.
I've found that when you got a motor running slow especially this case,a wire has burned through but also burned through to a ground which is acting as a neutral-i've run into some strange stuff in my years
Good vid. i Hate When there is no obvious short or burn. Youve got to be super thorough and check everything. Amp check the drain line heater. ? 1) sometimes - that means that it occurred when in defrost - sometimes. For the new guys out there - If the breaker is tripped & the Defrost clock is in defrost thats a key giveaway. dont just all willy nilly spin the defrost clock. 2) if nothing obvious - Alot of times - ive seen the Freezer drain line heater Burn open and it wont trip the breaker again , but it wont be warming either. super important to check the amps on drain line heater. 3) Ftngot ) - whenever u see frozen water stuck to fan blade covers it means 1 of 3 things a) drain line is plugged b) drain line heater is not working c) fan delay is bypassed or not working correctly. if over 10 yrs old Replace. they are cheap & should be a truck stock item. When in doubt allways replace. write year beside it with sharpie when replaced.
id be Probably replacing that Breaker too possibly ? it Fell out kinda easily ? Definately visual inspection of Breaker & Contact point to the bus bar ?
Yeah I hate that style of breaker, they should not be used in this panel because they are meant to be held in-place by the cover panel you see in a normal breaker box. Honestly I don't think that the breaker is UL listed for this situation, I'm sure If I contacted the underwriters laboratory they would have something to say about how it was installed.......
Agreed. i think All Breakers should be bolt in. Push in breakers should be outlawed period. it would probably eliminate alot of fires & problems. Push in breakers are a accident waiting to happen. friction gripping a bus bar is rediculously stupid.
@@OcRefrig I know Chris is very thorough. I'm just speaking from experience. I had a similar situation and the heaters checked out for amp draw and continuity and a fan motor was out due to single phasing. There was a small crack in the bottom of the pan heater that shorted when during defrost the condensation in the pan infiltrated the crack and caused an arc to ground. When dry all checked out normal.
Sir can you please explain. What is automatic pumpdown of chiller? What is antifreeze alarm means , if shown in chiller display? Why superheat is showing very low(4°), possible cause?
@@kashifiqbalzafar automatic pump down will start when there is no load on the chiller, to prevent liquid refrigerant slugging on start up. Anti freeze alarm will pop up when the evap temp drops below freezing. Superheat low is because there is no load on the chiller. Please ask sombody with knowhow to help you instead of google or TH-cam before you start breaking things.
by having bad contacts inside. when they cycle, the plating wears, pits and arc's worse, which means potentially high resistance and it could be an intermittent issue. looking fine with no load or lighter load (one or both fans unplugged)
Here's a doozy for you. 6 year old goodman central heat and air ac unit keeps switch from hot to cold every 30 seconds . Only thing that stops it is to turn brake off or turn head unit off . I thought it would be a simple fix by replacing the head unit with fresh battery's but no luck . Any idea what it is ? It worked fine for 6 years .
MAD SEXY just a thought from a 35 year tech. If you never lose your 24volts to the Reversing valve assuming your in cool mode then good chance the defrost board is bad. Goodman changeover valve is energized in cool mode, so if you lose power to the changeover valve 24 volt coil you turn back to heat mode. My gut says, defrost board. Good luck. Oh, quick test would be to wire 24 volts direct to changeover valve coil and if stays in cool mode, most likely 😉defrost board
One of my first refrigeration calls I've ever got was smoke smell in walk in cooler. Unit was running and maintaining temp in arrival. I tore the thing apart checking every wire and component but couldn't find anything even slightly irregular. That's when one of the new employees who didn't know I was in there strolls in cigarette in hand... Needless to say that was the last time he did that or anything else at that location as he was asked to leave permanently.
Ha ha that's funny!
@@HVACRVIDEOS Oh c'mon.....lol.
"Ha ha that's funny!" sounds like a computer generated response.... :x
love your videos Chris. Youre one of the best HVACR guys ive ever seen.. keep up the great work! Ive learned so much from watching these. Thank you for taking the time to make them
Thanks bud
Great videos, learning a lot.
I worked as an electronic tech for 20 years and decided to walk away. I started working for a Temp company that deals in the trades. So the last 18 months I have worked in HVAC, Electrical and excavation. Got a call from a company a few days ago and asked me if I was willing to interview for a service position in commercial refrigeration. I told them I never worked in that field and they stated we think you would be a good candidate to be able to learn and excel here. Interview is in a couple days so I been watching videos when ever I have free time. So anyways, thanks for the great videos.
Thanks for the videos. I’m going to Hvac school while being a restaurant owner and the cook still got a lot to learn but this video bout fan limit switches was very helpful cause I was having the same trouble thanks a lot great job
Perfect video for my morning coffee
Thanks
Great job again
if there's no phase monitor/protector, one phase dropped could allow the motors to run on low voltage via back-feed through other equipment in the building or more.
Always good to ask if they had any power issues in the area and visually inspect all wiring/devices from the equipment back to source breaker/panel.
He said voltage was 108= single fase
Good call sir !
I have this same this problem it was fan motor burned out due bad FDTD switch. I did spent in walk in freezer for hours to found out. I turned defrost clock into defrost and timing defrost ended and fan was run right away as the moisture blow out. I can see the little spark on motor. Replaced FDTD switch and fan motor just like you did that. Good video as always Chris
Always a good way to start the morning
I like you videos. I'm learning about stuff I never knew anything about. Awesome videos. Keep up the good work.
Very responsible of you to go back. 👍
I hope I get to work up with a technician like you when I start my apprenticeship.
Congratulations for your first sponsor,
Thanks bud
Congrats Chris ! what sponsor, sir?
Sporlan
Good vid Chris ... Another good teaching tool ...
Ice build up on the guard will keep the fan from turning and eventually burn it.
Nice find sir
Exellent video ! Just a request if it posible with that same system a wiring diagram follow up would be great !! I love your videos ! You would be a great teacher for hvac school ! I went to LATT.
I've found that when you got a motor running slow especially this case,a wire has burned through but also burned through to a ground which is acting as a neutral-i've run into some strange stuff in my years
thanks for the very good explained on the vidio
Good vid. i Hate When there is no obvious short or burn. Youve got to be super thorough and check everything. Amp check the drain line heater. ?
1) sometimes - that means that it occurred when in defrost - sometimes.
For the new guys out there - If the breaker is tripped & the Defrost clock is in defrost thats a key giveaway. dont just all willy nilly spin the defrost clock.
2) if nothing obvious - Alot of times - ive seen the Freezer drain line heater Burn open and it wont trip the breaker again , but it wont be warming either. super important to check the amps on drain line heater.
3) Ftngot ) - whenever u see frozen water stuck to fan blade covers it means 1 of 3 things
a) drain line is plugged
b) drain line heater is not working
c) fan delay is bypassed or not working correctly. if over 10 yrs old Replace. they are cheap & should be a truck stock item. When in doubt allways replace. write year beside it with sharpie when replaced.
id be Probably replacing that Breaker too possibly ? it Fell out kinda easily ? Definately visual inspection of Breaker & Contact point to the bus bar ?
Yeah I hate that style of breaker, they should not be used in this panel because they are meant to be held in-place by the cover panel you see in a normal breaker box. Honestly I don't think that the breaker is UL listed for this situation, I'm sure If I contacted the underwriters laboratory they would have something to say about how it was installed.......
Agreed. i think All Breakers should be bolt in. Push in breakers should be outlawed period. it would probably eliminate alot of fires & problems. Push in breakers are a accident waiting to happen. friction gripping a bus bar is rediculously stupid.
I love your video very much Very nice job
Thanks
Hope the pan heater doesn't have a split on the bottom side or under a clip.
Yep , He did not show Amp checking of All Heating elements in Defrost. probably done off camera. chris is usually very thorough.
@@OcRefrig I know Chris is very thorough. I'm just speaking from experience. I had a similar situation and the heaters checked out for amp draw and continuity and a fan motor was out due to single phasing. There was a small crack in the bottom of the pan heater that shorted when during defrost the condensation in the pan infiltrated the crack and caused an arc to ground. When dry all checked out normal.
Thanks. So, Very true. i see it in condensate heaters too they have to be visually inspected.
Great reminder csvi ! Thanks.
Sir can you please explain.
What is automatic pumpdown of chiller?
What is antifreeze alarm means , if shown in chiller display?
Why superheat is showing very low(4°), possible cause?
To little water flow
@@sjefoekel6058 thanks
@@sjefoekel6058 sir can you explain all 3 questions
@@kashifiqbalzafar automatic pump down will start when there is no load on the chiller, to prevent liquid refrigerant slugging on start up.
Anti freeze alarm will pop up when the evap temp drops below freezing.
Superheat low is because there is no load on the chiller.
Please ask sombody with knowhow to help you instead of google or TH-cam before you start breaking things.
@@sjefoekel6058 thanks alot
How would the fan delay switch cause the fan motors to burn up if they received the proper voltage ?
by having bad contacts inside. when they cycle, the plating wears, pits and arc's worse, which means potentially high resistance and it could be an intermittent issue. looking fine with no load or lighter load (one or both fans unplugged)
@@throttlebottle5906 you can tell by measuring voltage drop acros them, this also applies for relays,contactors.etc.
good vid bud
Here's a doozy for you. 6 year old goodman central heat and air ac unit keeps switch from hot to cold every 30 seconds . Only thing that stops it is to turn brake off or turn head unit off . I thought it would be a simple fix by replacing the head unit with fresh battery's but no luck . Any idea what it is ? It worked fine for 6 years .
MAD SEXY just a thought from a 35 year tech. If you never lose your 24volts to the Reversing valve assuming your in cool mode then good chance the defrost board is bad. Goodman changeover valve is energized in cool mode, so if you lose power to the changeover valve 24 volt coil you turn back to heat mode. My gut says, defrost board. Good luck. Oh, quick test would be to wire 24 volts direct to changeover valve coil and if stays in cool mode, most likely 😉defrost board
@@coolezum yes sir ended up costing me around 375 to replace.
!MAD SEXY very good. Peace Brother
No capacitors on the motors?
perfect
Fluke 1507
use it for the motor and the cables.
👍👍👍
#174 Thumbs up!