Contactor will not pull in (with 24v)

[@snooter28]

I appreciate the video for real. I learned a lot. I didn't realize the common was being broken in that fashion

[@Scott-hb8pu]

I just had to trace it back last week, this is something so simple but makes it so much easier to diagnose!

[@sclawrenc]

Thanks a bunch for the very helpful video. I knew I had a problem with one of my high or low pressure switches, and I could potentially bypass them, but I wasn't sure how to do it until I saw your video. I'm back up and running until the HVAC person is out in a couple of days.

[@homesteadjackass4979]

Well you just saved my ass brother. I’ve been scratching my head for 2 hours on a rooftop in 96 degree heat trying to figure this out. 🤦🏻‍♂️

[@kevonslims7269]

Should tell them to make sure they ground the common side of the contractor and not the 24 volt side.

[@wtfman5313]

They’re breaking the common instead of 24V then. Odd, I see that in automotive, but in A/C it’s pretty rare; at least in my 37 years in HVAC. It’s not a good idea to do it that way because if your common gets shorted somewhere, your safeties are bypassed and the unit could run itself into the ground needlessly. If you’re breaking 24V and it shorts, you’re still protected. Excellent video!

[@jasonmuan3523]

Yeah I agree with this, that’s why I was a little confused at first, I would much rather see 24v being broken with the switches rather than common.

[@danp7463]

Sometimes you can tap on the metal part of the pressure switch with a screwdriver handle and free it up.

[@thomaspierce1230]

This video save my life today. Thanks a millon man

[@TNHVACLIFE]

Thanks for the video waiting on you to drop another banger

[@danielzertuche9893]

What do you mean jumping on the ground? I see you put it on the brown wires and then one on the contactor I see that.

[@archieanderson2945]

although a short video it was very informative and will solve my issue. Thanks for sharing

[@jonhvac]

Glad to see you post brother.

[@soloch69]

Great video sir keep them coming 👍🏻🙌🏻🙌🏻🙌🏻🙌🏻

[@pick-the-kicks]

Where can I get the jumper cables to test?

[@zachmichaelg]

Hi, thanks for the 'right to the point' video. When you hooked up your jumper to ground, it looked like it wasn't a bare ground wire? Or am I seeing things?

[@robertomartinez8434]

You just got another subscriber. Wife is happy. There for I'm really happy. God bless you.

[@qzny1474]

You damn sure helped me brother. Thx

[@coxwagan]

Thanks for the video the trains are supposed to be the best condensing unit but usually they're always the pain in the butt they're not like other condensing units that's for sure what usually works on Goodman's definitely does not work on trains I guess this is very complex mechanism designed to be a pain in the butt to the point you must called a train professional

[@jasonmuan3523]

When you say that you are getting 24volts at the contactor, you aren’t actually. You are getting 24 volts to the outdoor condensing unit, but it isn’t making it to the contactor because one of the high pressure or allow pressure switches is open, correct?

[@jasonmuan3523]

Actually no you are right, I looked a little closer at your video, your pressure switches are on your common side, which would mean you do have 24 volts are the contactor on the hot side, but it wouldn’t close because it has no path to go after.

[@joshgmfan93]

Thank you new service tech here I just subscribed

[@HVACTechTips]

That’s great! Thank you. I hope these videos will help! Just send me a comment if you have any questions, I may be able to help!

[@mcfrenchfry2196]

Ya good video. Much appreciated 🤙🤙

[@franciscoramos8808]

I just check out a good man condenser with a high pressure switch compressor wo t come on and fan I just couldn't bye pass it .but now I know thank you

[@intelin123]

Lennox has a board that gets 24v in and 24v out to pressure switches and come back to board then out to contactor but it wasnt pulling in. I connected 24v wires to contactors and it pulled in and bypassed board and pressure switches.

[@deorajmangroo8681]

Hey bro the ground wire you jumped to looks insulated,can you clarify that with another video so that everyone who is asking can understand thank you

[@lalofabuloso4182]

Yes please

[@adagiotexas]

Yes, I am confused about that as well.

[@chrissipple1018]

That was my question also, or he has magical jumpers. I personally think that when you make a video you should go back and watch it over and see if you make any mistakes. I was confused like many I'm sure. I'm not saying that the producer makes bad videos but even professionals make errors. Other wise it was a good video.

[@rodriguezpratt6709]

I thought the same thing I tried it and burned up my jumpers lol

[@gbengaadeyinka1543]

The same with me also

[@sirridok]

Will a refrigerant leak cause the pressure switch to trip that contact ?

[@miketoro6263]

Yes. If there is a low pressure switch, and the unit is low on freon due to a refrigerant leak, low pressure switch can trip the contactor and keep the contactor from pulling.

[@trendingnow3973]

Hi,When I taking RTU Data for analyising,I shown some days value continuesly 255, Can you please explain the 255 relation with the roof top unit.

[@servicerepairandmaintenanc7605]

Thanks for the video.

[@_HVACdad]

I’m confused when you said ground. So I can just clamp it on a insulated wire?

[@HVACTechTips]

No. To the ground

[@HVACTechTips]

Like the bare copper wire

[@_HVACdad]

@@HVACTechTips sorry for the dumb questions, high voltage ground?

[@HVACTechTips]

Yes.

[@G-AND-A-PRESS-PLAY]

I jumped it but the contacter won’t pull in. I can push it manually and it cuts on. Is this the contactor?

[@LilAKayy]

What did it end up being

[@Miss.perpetual]

No, I changed the contactor. The contactor still wouldn’t be pulling in

[@USBionicMarine]

Your not getting voltage to pull in the contacter it should be 24 + volts​@@Miss.perpetual

[@jsosa2727]

GOD Bless you!

[@TimHuff-y9m]

So what if I have the same issue, 27 volts on the coul, no pressure switches at all and not coming on?

[@carlawhitfield7302]

It is connected wrong in the air handler. The Y call is going through the blue wire which is Trane and American Standard's normal ground wire at the control transformer. All that is happening is the ground is being provided because of the wire reversal

[@gbengaadeyinka1543]

Hello sir pls can this also be applied to a three pole contactor only the evaporator I side working but the confessed outside not working and the contactor is good

[@potentialhvac6074]

Super helpful buddy! thanks

[@reinierpena935]

Thanks got a question is it to late to start an HVAC career at 40 ?.

[@franciscoramos8808]

Nope just do it I started at 37

[@ethaweek4288]

Not at all. Just started at 44

[@Nocturnal_Mind]

Thank you very much!!!!

[@coxwagan]

I'm having the same problem everything checks out at the thermostat and air handler the voltage checks out at the thermostat wires on the condenser and on the side of the contactor but the contactor will not engage when I engage it manually only the compressor comes on the fan does not rotate unless I remove the fan hot wire from the circuit board and move it up pag. When I did do this while engaging the contactor at the same time I noticed that my low pressure line start to freeze up I did not have my gauges with me at the time because I've been troubleshooting it for wiring tomorrow I will put the gauges on and repeat this process maybe I do have a restriction and those special modifications on the low and high pressure supply lines on the condenser are closed due to low Freon are overfilling

[@Osinivos4]

I know its 2022 but we are having a similar issue with our heat pump the a/c was working a couple of days ago I even checked the vents when my tech was out side and we had 54 coming out. Now we have no voltage going to the contactor I check the board and the high and low limit switch hell we even bypassed them to see if we could get it to work, but still no low voltage going to the contactor. I checked the board on the A/C 24 volts is sitting there but somehow I am missing something and when we do engage the contactor the heater kicks on. Most likely I am going to have to just start from scratch and rewire the bugger I do have a slight feeling my tech my of messed up something somewhere.

[@daniela.9445]

I am having the same problem did you figure it out?

[@Osinivos4]

@@daniela.9445 Yes we had a broken wire behind the thermostat once we eliminated the wire we got the unit to turn on.

[@daniela.9445]

@@Osinivos4 thank you very much

[@Texan1048]

Ive had 4 techs come look at my trane unit. No one can fix it. It works except it will not pull in contactor by itself, you hsve to push it in. New contactor, verified old one was good. New cap. Old one was fine. Bypassed both pressure switches. Have normal green LED. This unit should go.... by doesnt.

[@markleach2177]

Did you figure it out?

[@Texan1048]

@@markleach2177 Not exactly. It just started working after I switched the timer with it's sister unit's. Working fine every since. I can only assume that one connector to the timer was not fitting well with the timer contact.

[@Aquariun9iteMMare]

Where does the HPS wires plug into the contactor then? One wire each on the contactor 24v side?

[@HVACTechTips]

The common side of the contactor

[@briansworld6682]

Goat

[@stephenbrown9549]

You saved my butt. Owe you some cold ones.

[@waltercampbell8620]

It is bare copper wire check out time index 1:24-1:25 you can see it's the rolmex bare copper ground

[@patrickpatrick9132]

I’m trying to see what you’re pointing out but the video is too fast. I’m trying to figure my problem out. I can’t check pressure. I do not have guages for that. I put a new contacter in and same problem. I was trouble shooting with the original paperwork proved. I jumped at thermostat and furnace circuit board in attic and contacter won’t close. When I manually close contacter the bigger pipe gets cold.

[@jorgeochoa6224]

So what if the unit has low Freon, and the contactor is not pulling, but has a pressure switch?

[@TimHuff-y9m]

That's where the low pressure will cut out, depending on how low it is that is

[@geebody8969]

Thank you sir

[@Yzerman1991]

I just looked at a similar unit. Contactor was replaced. Confirmed 24v at wire set coming from C and Y on furnace board to condensing unit. Same types of hi/low switches. Wire coming from low pressure switch was hooked to contactor coil. Even when pulling that wire off and manually depressing contactor, unit coming on. Providing 24v to contactor coil not getting contactor to pull in, very confused.

[@michaellee1087]

Can I do this on Rheem if so how

[@MrG-hm7xs]

What's wrong with the contractor..

[@mohammadabedl-rahman6484]

Hi How can I contact with you?

[@HarryHafsak]

Why isn’t power ran through the switches to the contactor? That’s ass backwards.

[@randyrogers450]

Did you just put an alligator clamp on a insulated wire?!?

[@HVACTechTips]

Maybe? 🤣

[@lisarobertson4485]

What does it mezn when you see a wire coming out of the ground close to your condenser and its not connected to anything? How do i know if it needs to be connected?

[@TalentNetworked]

Thanks

[@stephwaylonwells3218]

👍

[@hustla601]

You say ground but I can’t see it

[@deathrawphantasma]

You look like Dubs

[@williambarreiro7873]

Can someone explain how the jumper works without having bare wires? He put the jumper on top of the wire. I am very confused!! Thanks y'all!!

[@aljammal9891]

That ground wire was a bare wire , look at it one more time👍

[@hotboy1718]

@@aljammal9891 I see where its attached to the green wire thats grounded on the case, however it looks like he is attaching his jumper lead to a brown insulated wire thats wire nutted to the green wire...is this brown wire not as it seems and actually a bare wire?

[@chrissipple1018]

Once again I agree