Why Did The High Pressure Switch Kick Out | How To Reset A Defrost Board
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- เผยแพร่เมื่อ 28 ส.ค. 2024
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My fan motor seized without me noticing and cause the pressure to kick out, I replaced the motor and nothing happened. I saw how you reset the board and after the 5min. Delay everything is working fine. Thanks to you. 👏👏
Video was thorough and clear.
Thank you, sir for explaining how to reset you saved me hundreds.
Thank you! I found same random high-pressure fault on a Lennox 14HPX heatpump (occurred in heat mode) but coils and filter clean. Did power cycle/ reset via R wire - no more problems. Your thorough analysis gives me hope that it was random!
It could have been just some trach in the line (cap tubes etc.) and it got removed and moved within the system.
Thank you sir. It fixed my problem 🙏🙏🙏
Very nice and thoughtful diagnostic approach .
Realy enjoyed watching .
So what was the outcome ?Did you go back for same issue in that season?
Went back like two weeks later to change the indoor motor. It sometimes not start. Thanks for watching
I reset my defrost board and the fan would not kick on and even after replacing the capacitor you can spin it and it still would. Not spend freely my. problem was fan motor. Thanks it was a great video you doing an outstanding job
The Lennox unit I just repaired at my home has a pressure switch with a reset button on it. The outdoor unit would not power on at all. I pushed the button on the High Pressure Switch and the unit started running again. I felt a distinct click when I pushed the button which I did not feel in subsequent pushing.
What did this switch look like?
Possibly AIr Handler ECM motor internal electronics tripping fan motor OFF and ON, power surge or after lightning strike possible. If this happens again, Will replace ECM X16 Motor, ------ with PCM motor, Century D1056 and fan relay.
fluctuating pressures non condensables / what is the temperature of the discharge line?
Lennox had a recall on the blower fan controll the delay timer was replaced.it was intermittent.so if the fan timer failed to turn on the blower u get high pressure fault..
Any details on how to identify if I have a recalled fan control?
Thanks Amigo
Good job, That looks like a very nice place. It does look like non condensables might be a problem though.
This fixed my issue. Thanks!
Rumor has it that Powlas went for a 5 mile run right after this call😂
Short the test pins to bypass the 5 mins works on most all of them also
How can I do this?
Joe, THANK YOU
Dirty filter, dirty blower, dirty evap coil...did you check airflow / CFM's?
Due to I got the #'s on point I had to have good flow. But yes that was checked.
Powlas Enterprises you were checking your numbers with the heat strips on.
Doug c yes then without. still stayed well under 400
Powlas Enterprises what is the correct way to do it? with the heat strips on? or heat strips off? heat strips on would simulate a high heat load inside?
That would be without strips on. So that way you will get the true indoor temp and the right SA vs. RA.
Good Job!
The church said the compressor burnt. Its only 5 years old. Are new compressor pre-filled with 410A?
The Amazon link that you have to the tool that you're using, without hooking up to the unit will not pull up. let us know what you're using that's pretty cool
In the HVAC kit is the right item. They just have wrong photo. Its called Sporlan smart tool.
@@Powlashvac thank you sir
I just reset mine. Thk u. Dirty filter. My bad lol
I just bought a low pressure switch for my heat pump Model CH5524VKA2.. When I measure ohms, it's open. I thought it is supposed to be closed or does it change after it's installed? Thanks.
It opens on low psi and not being in the system it will have 0 psi. So it will close when it gets in the system as long as it is above the psi setting of the switch.
@@Powlashvac Great, thank you.
I've got a lenox unit. from the begining it was making a noise, a rappid clicking noise at the out side unit when running. They came out and said the defrost board was bad, so they changed that. Once they did, it seems, it started doing this thing were every once in a while with the thermistat on cold, the outside unit will not come on, the emergancy strips in the inside unit will come on, and the blower will run.
And it wont stop until you shut the unit off for a long time, then it will work. So by the time the a/c guy comes out, everything works. He will say some bull crap line, which I'll tell him "that's not it, you'll be back" This time, I looked at it, I unplugged the heating elements, so that I could let the system run. I opened the compressor panel to find this high pressure switch kick out fault. I'm not understanding why it's kicking this out, and why it would ever turn the heat strips on with it in cold cycle. Oh yeah this unit is just over a year old, and its been doing this since day one. Not impressed with Lennox
The last time I have seen something close to that, it ended up being the thermostat going in and out and turning on things that should not be on. Like in the middle of the summer turning on the heat strips. Let me know when it is found of what is wrong. Thanks for watching.
Great Man
Maybe the condenser needs cleaning?
My Carrier Infinity system keeps throwing a code 84 High pressure lockout 4 hour shut down.
I've been researching when I came across this video.
I turned it off at the box, and it reset. The fan is ramping up properly, and the unit is only 4 years old.
This is the second time it's done it in a month, so something fishy is going on.
When I reset the system, it runs fine.
I'm calling the installer tomorrow, because the unit is still well within warranty.
I'm also going to take a hose and clean out the condenser.
You may have a restriction in the system and makes it kick out. It may have to run for a period of time to get to the limit PSI.
@@Powlashvac Thanks so much for the info!
What ended up being the problem?
@@CollegeDreamJob I carefully hosed out the coils, and the problem never came back since.
It must have been just 3.5 years of dust and dirt clogging up the vanes.
Dust and dirt came out pretty good, so it was my fault for not properly maintaining the condenser on a yearly basis.
@@CollegeDreamJob That was never found, it has been running in AC and Heat every day forward fine so far.
I tired to fix my church heat pump. I had power at the contactor and the contactor pulled in at a cooling call. It just clicked. I saw the control board flashing but I did not check for fault. I wonder if I should have reset it and waited for a time delay. Or, I thought maybe I should short the high pressure switch and the low pressure switch to eliminate a safety issue. Any suggestions?
Trace the 24 volts thru the safety controls to see if they are any open.
@@Powlashvac you mean the low pressure, high pressure switch, is there a condensation switch? (for heat pumps indoor), control board reset?
filters were probably dirty and before you got there the customer change them happens to me all the time.
Customers never do that. Lol
Lol
Did they have a dirty filter and changed it before you arrived. I've had so many people do that to me. Lol. That of course could could cause your problem.
What I mean of course is if it was like a lot of the ones I see totally stopped up that is gonna raise the head pressure. Then when they notice they have a problem they check their filter see that it's dirt then call us. Lol.
Mine kicks the HP switch every time it goes into "Timed defrost. The aux heat is energized as normal but the refrigerator circuit trips the HP when it changes. I dont here the "Changeover valve like I used to. I reset it and it will run fine until it is time for defrost again. I do not suspect a refrigerant charge issue, .... Changeover valve maybe??? Help. Eubanks wall pack, heatpump, 10 yrs old.
My keeps tripping high pressure lock out bypass the hight pressure switch still saying high pressure lock out even after error code reset
intermittent fault. Hard to find. if it does it again, still hard to find. if the fault is not active while you are there, start simple and low cost troubleshoot procedure first.
Need Mild Ambient Kit, running HP in warm weather causes high pressure sw tripped
what were you useing to test pressures with on your phone?
This is the tool I use. Thanks for watching amzn.to/2jo0Up8
Amazon says link doesnt exist can u repost the amazon link
Great Video!
I just figured out that my problem is high pressure switch . how do I reset it on old system? I cant locate any buttons. are they resetable? or I need to replace it?
Thanks in advance!
If it does not have a reset button it most likely resets when the PSI drops below the PSI that is set for that switch.
It does take forever...ever..ever..ever
Sometimes it does.
Hello Mike, Can you please tell us the brand and model of the wireless probes you used for pressure, I have looked at the Testo, but in your video I see something that appears much smaller and also appears to be a small round item, unless I am seeing things, also, do they give temp also ?
I ask because the link you provided back then is dead.
"This is the tool I use. Thanks for watching amzn.to/2jo0Up8"
Thank you.Johnny
Thanks for watching and this is the tool I use to dial in the charge of a system ebay.to/2XmdvvD