Compressor not coming on? These are the most common reasons!!!

Ptac not cooling? it could be the compressor not working.....Here are some tips on why the A/C compressor may not be coming on....

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[lieutenantlawson]

Dude, I love when u actually run through it with that meter. It's a gamechanger to help the techs. U are AWESOME

[smolchatty]

Narrowed my issue down to a faulty control board. Never would’ve thought about it if i didn’t see this video. Thanks a ton 🙏

[paulmatherne]

You are THE man! Mine was two shorted wires at the top of my compressor. Checked the compressor windings, rewired, and back in action. Thanks very much for your very detailed video!!

[melvinnizelalarca]

Nice video. Just to share. I always start with the safety switches HPS OLP LPS etc.... If I suspect and found that the relay board is broken, I jump T1 of compressor straight to L2 disconnecting it from the Relay. When the compressor starts, it is the relay board. The contacts inside the relay are the ones that go bad. Not the entire board.

[duaneafields]

Very helpful!! 3 ptacs in my home, got rid our our ducting, best thing we ever did (put sleeves in the three main areas of our home), our master bedroom ptac went out 2 days ago, august 103 degrees S. georgia. just took the capacitor out of another bedroom ptac and ours is fixed now. I switched them. btw the other bedroom ptac now does the same thing, so it was the cap. Wife very happy, we'll see tonight! So here[s what it was doing.. on high or low cool, about every minute or so, there was a slight buzz for about 5 seconds, then stops till another minute rolls around, compressor was very hot to the touch, really hot. the fan always ran as normal just no ac. so the cap fixed it. and the compressor was fine all along and we're happy now. cleaned the whole thing too ge digital ptac. thanks for your video.

[godshammer]

These videos are great, thank you. I've learned a lot.

[wilsont]

The compressor was working normally giving out good cold air and suddenly it became completely quiet when the air-conditioner was switched on the next time, is this likely due to the capacitor issue? As you have said in the video there will still be starting sound coming from the compressor. But in our case no starting sound can be heard, what are the chances that it is a capacitor issue?

[robsir]

You’ve been my “go to” guy for almost two years now. Lol. I have a Amana ptac where the compressor turns on but no cooling. I’ve checked everything else. Would that just mean the system lost its refrigerant?

[Marco]

Should I check the compressor if mines is blowing cool but not cold?

[andysanchez]

This is not the same as a FRIEDRICH PTAC Zoneair —-model PZH12K3SB-A it’s absolutely close though.

[pooddescrewch]

Isn’t there a relay that can be bad ? I heard something like that and was looking to test mine . I guess it can be a lot of things .

[thereckchanic]

You never mentioned low refrigerant will cause the compressor from not coming on.

[YouCantSeeMeENT]

Ok serious question lol i changed everything on the ptac unit (islandaire) and still nothing I checked compressor and everything blower and fan are running what can be going on ?

[arabunting]

Hi Dave just put a new heater element still not working, I do have a green light on the Left corner what's that about?

[Kingsdayz]

any advice or can you do a video for a unit that is short cycling? compressor stays on forcouple minutes then turns off

[riskybusiness]

Dirty coils could also be the culprit.

[thuggmtz]

My compressor goes on and off every 3 what could possibly be wrong i already clean the ac to see if any changes and nothing thanks hopefully somebody help me out here thank you

[vntgrtd]

My compressor is not starting but the fan is blowing fan what could be the issue

[johnrommelt]

Air conditioner turns on and then BUZZES/HUMS? ANY IDEA I could send video?

[zainalmohamad]

Compressor not kicking in for my AC, diagnostic says Low current on CT1, what's the cause sir? Thanks in advance.