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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[@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 🙏

[@lieutenantlawson4295]

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

[@thepractitioneroflife3610]

This video helped me identify a burnt wire. I appreciate this video as it helped me get up and going. Thank you.

[@paulmatherne8239]

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!!

[@duaneafields]

good job bud

[@godshammer3122]

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

[@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.

[@duaneafields]

Yes, really, thanks a lot. 3 years ago, we bought our ptacs used in Tampa and drove them back to GA to save $2k. So they weren't the best and we're far from great. Just woke this morning and room feels totally different, the ge unit and the cap fix did it. We also noticed how filthy and packed the long squirrel cage fan was...the wife grabbed the toilet scrub brush and I got all the crud from the fan. Ptac blows cold across the room now. Cleaning does wonders. Thanks for your vids.

[@melvinnizelalarca8423]

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.

[@hugohernandez8783]

Exelent video !!!! Gracias amigo. 👏👍

[@ivansilva4559]

Great video

[@df-ln8sn]

Overload was always my first problem!

[@arabunting2981]

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?

[@kirkwright3869]

Thanks bro

[@pooddescrewch8718]

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 .

[@dannybrehm5992]

well done

[@user-vn2tg5rt2d]

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

[@andysanchez634]

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

[@alexcc5921]

The ptac I have a problem with makes a constant ticking noise behind the control board to the compressor..what would you do step by step to figure out you situation

[@PtacSolutions]

Hello, does it do it no matter what's running( heat, cool or fan only)? Or just when the compressor is running?

[@3Kingsdayz]

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

[@PtacSolutions]

Hello, I would check the condenser coil for cleanliness and/or make sure the condenser motor is working properly as well

[@jmh0789]

So I’m working on a unit now and when I disconnect the black thermostat wire the compressor will kick in perfectly but once it’s reconnected it shuts it back off. I’ve replaced the thermostat send it still has the same problem. Any advice on what I should do?

[@PtacSolutions]

Hello, that sounds like the control board is going bad.. but before you replace open the control panel and the compressor terminal cover and check the wiring

[@virudon21]

i have total of 40 plus Amana ptec few air-condition showing F6 code and i replaced the yellow thermistor, but the code is not going away its working fine even with the code what should i do to get rid of the code

[@PtacSolutions]

Hey Viren If you already replaced the yellow thermistor, try doing a reset on the unit by unplugging the unit, turn off master switch. Reconnect unit, hold down the cool and heat buttons for about 10 seconds, while holding turn on master switch, let go when the red light comes on. See if that takes care of it

[@wilsont1010]

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?

[@PtacSolutions]

I would recommend to check the High pressure switch wiring( very common to short out) or if the capacitor is completely dead then you wouldn't have the compressor trying to start

[@futfut1]

I have a 6000 btu ge window unit. It powers on, but when I set it to 65 degrees, a minute later, it jumps back up to 77 degrees. Any help would be appreciated.

[@PtacSolutions]

Hello John More than likely the board is bad

[@Joeygambit]

What would you suggest if the ptac unit is short cycling? What troubleshooting steps would you take? I have two units at work that run for 3 minutes at a time before the compressor stops running.

[@PtacSolutions]

Hello Joey I would check for a bad condenser motor broken fan blade or dirty condenser coil, all of these can cause high pressure causing the pressure switch(if applicable) to open or the compressor to overheat

[@Joeygambit]

@@PtacSolutions I jist realized that our dryer vents for hotel laundry is right below the room that is having issues with short cycling and sure enough i pulled the unit out and saw the lint the the exhaust vents for the laundry room. Will clean out tomorrow. Thanks for the suggestions. You're the only maintenance channel that works on PTACs and your videos are beyond helpful

[@3Kingsdayz]

Hey can you put a hard start kit on these ?

[@PtacSolutions]

Hello, yes but I would recommend to use them on the 12k btu units and up, I've only seen hard start kits that range from 1 ton to 5 ton systems

[@johnrommelt6560]

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

[@tyewalp3674]

Haven’t tested anything yet but I have an Amana PTAC compressor stays on forever even when off and master switch off

[@PtacSolutions]

Hey Tye More than likely you have a bad board(stuck relay)

[@tyewalp3674]

@@PtacSolutions yeah it was thanks a lot

[@jojofamily2136]

How you test condenser fan please

[@PtacSolutions]

Hello By checking the amp draw

[@robsir63]

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?

[@PtacSolutions]

Hey Rob Thank you, I'm glad my videos have been of help to you!! So, if the compressor and motors are working and no cold is coming out more than likely there's no refrigerant in the system

[@robsir63]

@@PtacSolutions Awesome. Thanks for the follow up. I figured that was it, but just wanted to double check and make sure I didn’t miss anything. I never worked on PTACs until I came to work in this hotel almost two years ago. Now I feel like a freakin pro. Lol. Thanks again 👍🏼

[@robsir63]

@@PtacSolutions Hey I have another question. So I have another Amana PTAC who’s compressor will come on. It’ll reach temp then shut off. When it calls for cooling again, the unit will start but the compressor won’t come back on. Ive never changed a capacitor in one of these. Do they go bad as well?

[@thereckchanic4709]

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

[@PtacSolutions]

How's it going... in ptacs that doesn't happen, the compressor will run even if the unit is completely empty

[@maintenancetech283]

PTACs don't have have a contactor switch?

[@PtacSolutions]

No they dont

[@kgoldsmith9592]

What the amp draw on the compressor supposed to be it should be 4 amp correct

[@PtacSolutions]

Hello Well it varies on the compressor size, 7k btu compressor amp draw would be 3.. a 15k btu compressor would be around 6

[@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 ?

[@PtacSolutions]

Maybe the unit is out of refrigerant, it leaked out

[@YouCantSeeMeENT]

@@PtacSolutions gotcha 👍🏼 thanks as always !

[@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

[@PtacSolutions]

Hello, How's the condenser motor working?

[@EL-pr9un]

You have any info on GE PTACs

[@PtacSolutions]

Yes I do

[@ultimateslaker]

Can the pressure switch be replaced?

[@PtacSolutions]

Hello Yes it can, but you'll have remove the refrigerant

[@ultimateslaker]

Can i remove the sensor by pulling it out after evac the refrigerant?

[@zainalmohamad3076]

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

[@PtacSolutions]

Hello What brand unit do you have?

[@zainalmohamad3076]

@@PtacSolutions it's a Samsung system 3 digital inverter sir.

[@PtacSolutions]

I'm sorry I'm not familiar with that type of unit. Is that a mini split system?

[@zainalmohamad3076]

@@PtacSolutions yes sir, it have one compressor external unit supplies 3 FCU.

[@jeffmurray3685]

I got a a ptac that seems to be lockup. LRA is fine and Capacitor has been changed. Voltage is fine. Any suggestions?

[@PtacSolutions]

Hello, whats the amp draw?

[@jeffmurray3685]

@@PtacSolutions 23, 23, 2.5 amp draw. LRA is 33. Thx Dave

[@PtacSolutions]

@@jeffmurray3685 hey Jeff, that is pretty high it's possible that the compressor is locked.. what's the RLA

[@jeffmurray3685]

@@PtacSolutions 33 LRA on the tag and drawing 24a with my meter . I also put a hard start on it with a brand new capacitor. Overload hax been tested to. Hums for for 3 seconds then clicks off again and again 🙄

[@PtacSolutions]

@@jeffmurray3685 usually the compressor pulls about between 4 and 6 amps when running normal, you have 23 which is really high( see RLA) and you also have a good capacitor with a hard start kit. It really sounds like the compressor is locked up

[@thomascave3270]

My problem is my digital temp will not go up or down, why is that

[@PtacSolutions]

Hello, that sounds like the control membrane( touch pad) is bad

[@foreman0909]

I have an Amana ptac unit with twist knobs.. everything works except the compressor does not come on.. between line 1 and compressor wires I have 0 volts.. but from ground to line1 i have 120 and from ground to compressor I have 120 just don’t get 240 like you do in the video?

[@PtacSolutions]

Hello, usually the board has a delay about 3 to 5min.. after that if you're still not getting the 240, more than likely it's the control board not sending power to the compressor.

[@PtacSolutions]

If you have a jumper( alligator clips) you can send power directly by hooking it from line 2 to the compressor, if the compressor comes on the problem is the control board board. Disconnect the unit before doing so

[@foreman0909]

@@PtacSolutions even though from ground to the purple wire on compressor has 120 that still is not what we are looking for?

[@foreman0909]

@@PtacSolutions ok I will try that

[@PtacSolutions]

@@foreman0909 no, you need 240 volts to get that compressor to work

[@mkl5448]

I need an overload switch for that exact unit, nobody seems to have it.

[@PtacSolutions]

Hello, What is the btu

[@mkl5448]

@@PtacSolutions 9000btu

[@PtacSolutions]

I can get you a good used one

[@mkl5448]

@@PtacSolutions Thank you very much, I really didn't expect that but an most appreciative. I'm going to call a few local places tomorrow and see where that takes me, if I come up empty, I will get back with you. I find it odd it's not available, but in fairness, some places it's back ordered.

[@PtacSolutions]

Yes, they are.. I'm struggling to get some parts myself. If you need it, you can have it just pay for the shipping fee

[@riskybusiness3413]

Dirty coils could also be the culprit.

[@ansufofana136]

❤

[@andrade24100]

Mr. David have you ever run into a PTAC unit where it's cooling perfectly fine, but on the evening when it starts getting hot the unit blows warm air

[@PtacSolutions]

Yes I have! Usually what I find is dirty condenser coils or the compressor overheating it can't keep up...

[@andrade24100]

@@PtacSolutions i figured something like that was happening. I've been removing the unit from the wall and rinsing the coils both condenser and evaporator. Been working wayy better than before. If the compressor overheats, is there anything we can do besides maybe upgrading the unit to a greater btu?

[@PtacSolutions]

@@andrade24100 unfortunately no, if the unit is old and you have already washed them and its still not cooling like it should, best thing to do is get it replaced

[@andrade24100]

Thanks for your help David!! 👍

[@melvinnizelalarca8423]

There are ptacs that the RV has been de-energized thus the warm air. I have seen board pulled out and saw a crack on the RV pcb line.

[@JoseGarcia-ou9vy]

How do I bypass the overload switch?

[@PtacSolutions]

Hello Jose By connecting the wire that's coming from the control board (should be connected to the overload) and connecting it directly to the compressor. In other words you are basically going to eliminate the overload switch

[@JoseGarcia-ou9vy]

@@PtacSolutions Bro Thanks for always being there to reply to our questions, do you consider this a quick temporary solution while you get the overload switch or can I just run it like that?

[@PtacSolutions]

@@JoseGarcia-ou9vy your welcome.. well that switch serves as a protection for the compressor. You can run it like that but I would recommend to get one installed

[@JoseGarcia-ou9vy]

@@PtacSolutions awesome thanks again brother I asked the chief already to order extra ones, do you have a specific place where you get your ptac parts from?

[@PtacSolutions]

@@JoseGarcia-ou9vy hey Jose, you can get them directly from Amana ptac parts

[@wmfife1]

I found this on a search for window a/c but don't think that's what this is.

[@PtacSolutions]

Hey Bill Yeah, I post on ptac ac units

[@jamby426]

amana window ac is not cooling. fans and compressor are running but the air is not cold. used a heat gun on the thermocouple by no change. compressor plumbing is cool to the touch.

[@jamby426]

Reading farther down it seems when everything works but no cold. Low or no refrigerant so does anyone recharge these window units?

[@PtacSolutions]

Hey Jim It sounds like that unit may be low on refrigerant or a refrigerant restriction

[@PtacSolutions]

They can be charged, but if the leak is big might be better to replace the unit, depending on where the leak is at

[@TheGhostOf95]

Mine starts to kick on, then cuts right back off

[@brandonwilson7514]

Same

[@jescotto4337]

What if the unit turns on but not turns the cold air on

[@PtacSolutions]

Hello, if everything is working and no cold air is coming out more than likely unit is either low on refrigerant or there's no refrigerant in the system (due to leak)

[@jescotto4337]

@@PtacSolutions unit turns on and temp is raiser so it will call for air but it won't

[@PtacSolutions]

@@jescotto4337 so the only thing working is the blower? Back fan and compressor are not working?

[@jescotto4337]

@@PtacSolutions for example the unit is being put on temp 71 and the room temp is about 80 let's say. The unit isn't turning on to start cooling like it should.

[@jescotto4337]

@@PtacSolutions and sorry but your the only guy on here that works on ptac units and actually talks about troubleshooting but just installing and cleaning!

[@terryphillips2692]

Thermal cap on the compressor is most common

[@johnnytucker6709]

Can you elaborate on that a little

[@virudon21]

Hey bud I am one of your KZbin subscriber and am seeking help I had code f6 on my Amanda ptec I replaced the thermistor and the circuit board code went awry for a bit compressor came on and I thought it was fixed after I installed it in the room it doesn’t work and showed me code f6 again and I changed four different thermistor but the code won’t go away and AC not working compressor doesn’t come on and it’s is very hot could you guide me what should I do next please thanks

[@PtacSolutions]

Hey Viren Ok, so usually that code pops up when the filters, discharge air grille or even the blower is dirty affecting the discharge of air. Make sure all of that is good

[@virudon21]

@@PtacSolutions all that is cleaned just done it yesterday and compressor comes on if I by pass the overload switch but the switch is good but the compressor is extremely hot so I left it off overnight don’t know what else to replace or change

[@PtacSolutions]

Ok, so sounds like that compressor may be overheating. Make sure the condenser coil is clean and clear through the fan shroud

[@virudon21]

@@PtacSolutions everything is cleaned from the front and back compressor kicked on after overnight rest one time only but after I turned it off and on now compressor making humming sound but won’t kick on

[@PtacSolutions]

@@virudon21 can you check Amp draw on the condenser motor?

[@luiscontreras8863]

Nesecito ayuda plis contesta rápido

[@PtacSolutions]

Que tal Luis