My Service and Procedure Book- www.acservicetech.com/the-book Support The Channel- www.patreon.com/acservicetech Tool List- www.amazon.com/shop/acservicetech For those that are looking for the tools used in the videos: (Linked Below) UEI DL479 Multimeter with temp sensor amzn.to/2jtsUbJ Valve Core Removal Tool amzn.to/2uYr8WL Blue Vapor Yellow Jacket Gauge- amzn.to/2Ju7pan Red Liquid Yellow Jacket Gauge- amzn.to/2sSFmGH Quick Coupler for the Gauges- amzn.to/2sTk8Ze JB Test Gauge High Side- amzn.to/2ruQb0l JB Test Gauge Low Side- amzn.to/2qR0utM Manual Copper Tube Swage/Expander- amzn.to/2WRPa1M Uniweld Hydraulic Swaging Tool- amzn.to/2MlrI8m Uniweld Swage and Flare Kit- amzn.to/2T55jyn Ameriflame Oxy Acetylene Torch Setup- amzn.to/2SRm3JF #2 Tip for Oxy Acetylene Torch- amzn.to/2SPDaeD Cap-N-Hook Tip for Oxy Acetylene- amzn.to/2MbhpUk Air Acetylene Torch Setup- amzn.to/2aQalsb 15% Silver Brazing Rods- amzn.to/2gVLyLc Nitrogen Regulator- amzn.to/2bXdR5f Nitrogen Flow Meter- amzn.to/2brvoBg NitroVue Flow Reg- amzn.to/2MiulYv Ultrasonic Leak Detector- amzn.to/2Lw4Zpr UEI DL479 Multimeter with temp sensor amzn.to/2jtsUbJ Magnet Jumpers- amzn.to/2PyKPQZ Alligator Jumpers- amzn.to/2PxqJXn Fieldpiece ST4 Dual Temp Meter amzn.to/2wc1ME3 Fieldpiece Bead K Type Temp Sensor amzn.to/2DBwKfs Fieldpiece Wet Bulb Temp Sensor amzn.to/2RRI7Tw Fieldpiece TC24 Temp Clamp amzn.to/2qHLyjZ Yellow Jacket Refrigerant Gauge Set amzn.to/2aenwTq Refrigerant hoses with valves amzn.to/2aBumVI Yellow Jacket Gauge set & hoses amzn.to/2vLVkV9 Yellow Jacket 4 Port Manifold w Hoses amzn.to/2BkuGIq FieldpieceSMAN360 Digital Manifold Set amzn.to/2BdoaD4 FieldpieceSMAN460 Digital Manifold Set amzn.to/2nB4Fe6 Compact Ball Valve for Refrigerant Hose amzn.to/2KUisW8 QuickDisconnect 90 for refrigerant hose amzn.to/2MMtVcg JB 6 CFM Vacuum Pump amzn.to/2nqbvo8 Appion Blue 3/8" to 1/4" Vacuum Hose amzn.to/2uYlVyc Appion Red 3/8" to 1/4" Vacuum Hose amzn.to/2uYg6Ro Appion Valve Core Removal Tool amzn.to/2uYr8WL Yellow Jacket 1/4" by 1/4" hose amzn.to/2umtcod CPS Vacuum Micron Gauge amzn.to/2v1nM3O Supco Vacuum Micron Gauge amzn.to/2v1JRiA RectorSeal Bubble Gas Leak Detector amzn.to/2ckWACn UEI DL389 Multimeter amzn.to/2xAdaJf Other tool links can be found in the video description section. Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal- www.amazon.com/shop/acservicetech

@vrmntthb

5 жыл бұрын

Bravo sir....if you’d had done this presentation 18 months ago when I started at the job I have now, I wouldn’t have had to hunt down thermostat diagrams and electrical theory to understand it on my terms how these thermostats work. This should cut out the guesswork of most guys who don’t have 30 years into the electrical field as I have and make installs or the wiring needs easier to apply in their situations...

@acservicetechchannel

5 жыл бұрын

Thanks Todd, glad to help!

This is the best AC wiring summary to be found, and your diagram is outstanding.

Outstanding!!! I've been trying to figure out the wiring on my new Honeywell thermostat. This is the FIRST comprehensive explanation I've seen to date.

Boy, my head is spinning from this power-packed information! I watched twice and really have a great grasp on how my HVAC system was incorrectly installed. Thanks so much! Subscribed!

@acservicetechchannel

4 жыл бұрын

Thanks a lot Sweet T Art! Check out the resources on the website at www.acservicetech.com as well, thanks!

This video was THE clear and detailed description I have been looking for. Specifically, you mention Ruud and Ream heat pumps with their B wire @6:37 which is my system. Thank you so much!

After wading through a bunch of low-effort SEO spam websites trying to understand this type of wiring, your video made it all crystal clear in one swoop. Huge thanks!

Your wiring diagram at 9:34 saved me from heat stroke. Thank God for how to videos!!!!!!

@AC Service LLC - You do know what you’re talking about, thank you for being so honest and spread the knowledge, what goes around comes around.

@acservicetechchannel

5 жыл бұрын

Thanks a lot Erwin!

I've been looking at several videos on heat pump thermostat wiring as well as talking to a Honeywell tech who gave me wrong instructions. This video finally gave me the correct wiring setup for my Goodman heat pump and a new Honeywell stat with AUX heat. I had a black wire that the Honeywell tech told me to connect to "E"emergency and white to AUX. I asked about jumping the "E" and AUX and he said no. I got no heat in "E" mode so I removed the black wire and jumped the "E" and AUX and everything works. The black as well as a brown wire are "extra" if needed. This video was the only one that said the black and brown were extra. Great Video!

@acservicetechchannel

4 жыл бұрын

Ha ha, that's awesome! I'm glad it helped you! Thanks for the note!

Sir, you are an awesome HVAC instructor. Super clear explanations!

@acservicetechchannel

3 жыл бұрын

Glad you think so!

Thank you for a very clear and easy to understand video on heat pump wiring. I had a system that ran on the o wire and the new system is on the blue wire. Your video helped me figure out why the system was heating on the cool setting and cooling on the heat setting. Simple reprogramming of the thermostat problem fixed. 👍

This is a great video to watch before wiring the basic RTH111 Honeywell thermostat for an old 'GE Weathertron' heat pump.

This was exactly what I needed. Thank you for the great explanation!

Best, just best explanation on You tube I’ve ever seen! I've little bit been confused about Aux and Electric terminal on heat pumps. California. Now the wiring combinations is clear to me. BIG thank you, Craig. Interesting, so electric strips helping to achieve set temperature faster. Also, I've met a gas furnace on Aux in Seattle. Coool!

@acservicetechchannel

5 жыл бұрын

Hey Tapch MC, glad to help and thank you for your support on Patreon.com/acservicetech - Yeah so aux is powered when the thermostat notices that the heat pump cannot keep up on its own or the temp is set up to far compared to the actual temp in the building. The electric strip heating is downstream of the coil so it won't effect the coil's heat rejection and will add to it to get the air hotter, thanks and look at some of the other videos I linked in the 18 thermostat video playlist in the description. There are others that describe the aux too, thanks!

GREAT for DIY installation. Saved me from a cold night ! Thank you !

@acservicetechchannel

3 жыл бұрын

Glad it helped!

Hey man you help me out so much in the field, and I just wanted to thank you for that. I started my HVAC company 2 years ago quit my high paying maintenance mechanic job and it’s been a roller coaster ride ever since but everything is going very well. Keep up the good work with your channel!

@commercialmetalsco3816

2 жыл бұрын

Thank you very much. Your video kept me from having a hot night in Texas. You are an 'A Team' member... and you would be B.A.

Awesome vid...well presented and explained. Thank you for posting it!

@acservicetechchannel

5 жыл бұрын

Thanks a lot Steven!

Finally I know how my furnace work with heat pump! Thanks alot! Very well explained and detailed

@acservicetechchannel

3 жыл бұрын

Glad it helped

Oh yes great video, very clear, excellent graphics. Good job.

Awesome!! Thank you very much for this! Exactly what I was looking for!!

Awesome explanation of what every other video skims over. How the voltage flows and over what wires and when... that’s what I was looking for. Thank you

@acservicetechchannel

5 жыл бұрын

Glad to help sheldon!

@acservicetechchannel

5 жыл бұрын

Glad to help sheldon!

This answered a question I had yesterday. Thank you!!

@acservicetechchannel

5 жыл бұрын

Awesome! Glad to help!

First time i ever heard an hvac guy run a spare Conductor Good job !!!

Very thorough lesson. Thank you sir!

@acservicetechchannel

5 жыл бұрын

Thank you Tomon8tor!

thank you for 2 days I have been trying to figure out why my heat strips were connected to the outdoor unit and had the misconception that the W terminal from the thermostat was the heat command . your explanation provided complete understanding of how it actually works

Ok figured out the problem. The PCB had been rigged to bypass a soldering fault in the G connector plus something had gone low causing the fuse to blow. The PCB should have been replaced at initial installation. Shoddy work. New PCB cost hardly anything and all is up working fine thanks to your KZread and Nest (great customer service). I now understand all (well almost all) of the electrical side of my HVAC Thanks again.

Great video and explanation, Thank You.

Great description and saved me from having to have service call on some basic wiring.

Thanks for simple explanation and diagrams

I had to watch this twice to get it but I'm not qualified as an a/c guy. After the 2nd time, I realized the function at the thermostat changed the voltage command the respective part or parts to run Air , cold air, reversal to heat, resistance heat, and emergency heat. At least it helps understand also what is not happening when your trying to get heat or cold air. I'm gonna take a class if I get a chance .

Exactly what I needed. Thanks!

@acservicetechchannel

3 жыл бұрын

Glad it helped!

Clear as water. Amazing explanation

@acservicetechchannel

3 жыл бұрын

Thanks a lot

Thanks AC Service Tech!

@acservicetechchannel

5 жыл бұрын

Thanks Eddie!

Another well explained and presented video.

@acservicetechchannel

5 жыл бұрын

Thanks a lot Kenny!

Amazing video! Very didactic ! Thank you

Excellent video. Thank you.

This video helped me resolve 5 years of Hell. NO WONDER my AC never ran correctly. The custom home I bought (second owner) has a heat pump with two zones and a zone controller. But only 5 wires pulled to the thermostats. This video makes it clear I need a 6th wire for the reversing valve. I followed the instructions with a makeshift 6th wire and my AC works perfectly. Thanks again for making sense out of this for me.

@acservicetechchannel

5 жыл бұрын

Glad to help Sheldon!

This is great. Thanks for explaining. I've had multiple HVAC guys out to try to diagnose our heat pump/ electric grid system. Each time, after they left and I paid the bill, the system was worse than before they came. Since no one around here seems to be competent, I had to learn it myself. The last time they came, they hooked the white wire to W in the thermostat rather than to AUX/E. Only the heat pump would run, and we didn't get any backup electric heat. I fixed that issue and now both the heat pump and electric heat work! I still have one issue going on. When the outdoor heat pump turns on, the compressor cycles repeatedly every 15-20 seconds. Also, the large air fan on the heat pump doesn't turn on. It was turning on recently, but between all the guys that have messed with it, it has stopped working. I just wonder if there is anything in the wiring that could be causing this? If I am understanding correctly, the heat pump compressor and fan are both triggered by the same wire? By the way, the first guy who came out checked the refrigerant pressures, looked for leaks, and said everything was fine, but added a little bit of refrigerant. I don't think the refrigerant is low.

very informative, learned how to run my wires in plain language and the coding of each wire and function

@acservicetechchannel

4 жыл бұрын

Thanks a lot!

Really the clearest explanation of the themo wires and what they do. Subbed & upped you for that my friend. Thanks alot!

Another great video, I have learned a lot more from you then my hvacr teacher from years ago lol.

@acservicetechchannel

5 жыл бұрын

Thanks a lot Ace, glad to help!

I LOVE YOUR VIDEOS THANK YOU SO MUCH , I just order ur book as well !!!

@acservicetechchannel

4 жыл бұрын

Awesome! Thank you!

Thank you so much. I needed to bypass my cdef board. I think the contactor relay is fried. Bought a cheep Amazon board DOA no lights when connected and CB turned on. FRUSTRATING. You get what you pay for. I normally do Aircraft and Automotive AC. This was exactly what I needed to get my house cooled off while I find the right board. I did wire in my pressure sensors. They work fine, good 410A refrigerant pressures. Just a bad board. Hvac co estimated $1,101.68 to replace the 100 board with less than 20 push on or screw on connections... Give me a break. I said 1/2. No way we will starve. Never mind I will fix it myself!!!! Thanks yo you its working perfectly and safe in cool mode until I can get the board.

You are great it's very helpful.THANK YOU.

@acservicetechchannel

4 жыл бұрын

Glad it was helpful!

So informative, hope to see more new videos in the future

@acservicetechchannel

4 жыл бұрын

More to come!

Great video. Very helpful. Thanks

@acservicetechchannel

3 жыл бұрын

Glad it was helpful!

Great video, thanks 🤙

Tanks you videos they are lot help.

Actually you spoke at my speed and I’m tired at 11pm. Wrapping up a heat pump installation and I’m sucking up this information as I get confused 😐 Thank you!

Excellent. Thank you!

@acservicetechchannel

4 жыл бұрын

Glad it was helpful!

Thanks . Perfect explanation .

@acservicetechchannel

Жыл бұрын

Glad it was helpful!

This is a great help to us oil guys!!!!

@acservicetechchannel

5 жыл бұрын

Thanks Mongo!

Great video thanks.

Very nice explanition

Very good 👍

I don't think it matters a lot but it seems to me rheem and ruud are the ones who are doing cooling and heating in relation to reversing valve in the right way and other HVAC manufacturers are running it in the opposite way lol. Thanks for your continuous sharing of knowledge!

@acservicetechchannel

5 жыл бұрын

I think of it in the opposite way because I live in a cold climate. If the coil on the reversing valve is bad, it will still operate in heating mode which would be more of a necessity but it really depends on the location in which you live as far as what a necessity is, thanks!

@nitrofan917

5 жыл бұрын

I agree, I always thought the reversing valve was activated in heat mode on all units.

thank you for sharing... blessings!!!

@acservicetechchannel

5 жыл бұрын

Glad to help! Thanks!

I think ya did a fine job of explaining the 6 wire layout. Thanks that’s what I needed. (I’m dealing with an old ass coleman heatpump [1979-80?]) As you know an electrician is useless as an AC guy. You might have just changed that. 🤣😂 Really tho… thanks man.

Beautiful explanation,will like to hear about the 2stage heat & 2stage cooling on the heat pump

Very good information thank you sir

@acservicetechchannel

5 жыл бұрын

Thanks ejohnfall!

Thank You

Thank you

Great video man.

@acservicetechchannel

3 жыл бұрын

Glad you enjoyed it

Wow. Thank you so much!!

@acservicetechchannel

3 жыл бұрын

You're welcome!

How many views man. You have got it going on. Keep it up

Great Video.

@acservicetechchannel

3 жыл бұрын

Glad you enjoyed it

Very good idea

@acservicetechchannel

4 жыл бұрын

Thanks for liking

Great video. We have a 4 wire into the thermostat that i want to upgrade with a smart (Honeywell T9) thermostat. The new thermostat comes with a conversion module that uses the G wire to bring 24 V to the new thermostat on the existing 4 wire. At the gas furnace, the G wire from the existing installation is connected directly to an HRV unit and not to the G terminal at the furnace. Not sure where to go to install the new thermostat. Any suggestions? Thanks in advance.

Hello. First, awesome video. I finished wiring new heat pump and elec furnacea, everything works A1 thanks to your videos. I only got one question, hope you can help: at the end of swapping old system with a newer one ( bought second hand) i still have a temp sensor left. It was hooked om the indoor coil, but i have no idea were it should be pluged. Both wires are red and i have no indications. Tried to found the answer elsewhere but non succes. So what does this sensor do and where it should be plug ? Thank you.

Hello, do you have a video on installing an outdoor thermastat, for a dual fuel goodman? Thanks

Can you explain the variable speed hvac thermostat wiring and controls?

👍 Awesome

Great video Craig! I was referencing this the other day installing a hybrid dual fuel system just like the setup in your video. My question is if the heat pump terminal strip has a "D" Defrost terminal which is energized with 24v when the heat pump goes into defrost mode can I run a wire from the heatpump "D" terminal to W2 on the furnace terminal strip so the furnace comes on while the indoor coil is getting cold in Defrost mode? The defrost is controlled by the heat pumps Board or one of its boards.

Great video quick question i have a 3 wire oil furnace if i touch white and blue wire together heat comes on otherwise if i put blue into c it does not work what im i doing wrong

Confused about the connection between the W terminals on heat pump and air handler, and the E/aux terminals on the thermostat. The W on the heat pump is an output (as you say), but the E/aux on the thermostat is also an output. So those two outputs are connected together, so doesn't that cause an electrical conflict (sort of like a short-circuit) ?

I have all those terminals on my thermostat, so my question is how or where would I connect them in a nest 3rd gen thermostat? Specifically the e and r terminal. It will be a greatly appreciated for the info

Yeah that's if the installer before you using the standard color codes. I know a building that used blue for O/B and Orange for common and other colors off matched. Sometimes you just have to verify what colors are hooked up to the control boards.

@acservicetechchannel

5 жыл бұрын

You always need to look at the indoor unit when replacing a thermostat and look at what terminals the old tstat was connnected to. This was more for when you are installing it and running the wires, thanks KCTech!

@mikie214now

4 жыл бұрын

Rheem / RUUD system units

where was this when I needed it 3 hours ago!? aaaarrrgggh....

I have a Fujitsu mini split, I use a adapter (UTY-TTRX) to connect to nest. On the adapter it doesn’t have O/B input to connect to. On the nest it show the wire are connected. When I call for heat it light up orange, but the air handler doesn’t not power on. Thanks

on heat call with auxillary heat on, there's 24 volts on R,Y,G, W/aux right?..if you are using high speed on cool and low speed on heat , how do you not sending power to both speeds of the blower fan if G and W are both energized?.....been looking for a diagram/explanation for a lil while now, could not find one....thanks in advance!

I am going to be buying a new house. I wanted to possibly get a nest or another smart thermostat in place of the old thermostat. The unit at this home is an older Lennox model from 1995. Its a 2.5 ton unit. I dont know the exact model number, but I will find out soon. It is a heat pump, and also has an emergency heat stage with heating elements. Will these newer smart thermostats work for something like this? Any recommendations or advice on this?

Is 28V too high? Also, is any measured voltage between 24 and 0 on any wires (yellow in my case) indicative of a problem? I am getting 6.7V on the yellow wire at the condenser unit with the thermostat in cooling mode but setpoint above the room temperature (so that cooling is not called on).

Hi question, I'm switching from a Trane thermostat to a Honeywell T2 Non Programmable Thermostat on our Trane split system Heat Pump with Emergency Heat strips (I Think). The Trane has a Blue , Orange, Green, yellow, red, and a white wire coming out of the wall, There is also a cross over W1 (White wire) on the Trane going from W1 to W2/X2 on the Trane thermostat Our . The Honey Well has a place for a O/B wire. Does the Orange wire from the Trane go in the O/B slot on the Honeywell or the Blue wire?, and does the Blue wire from the Trane go in the C slot on the Honeywell?

Can I disable my AUX/EM mode by simply disconnected the AUX/E wire ?

Hey I currently have a oil fired furnace and I installed a Goodman 5-ton with a heat pump do I need a relay to be able to have the heat pump or the furnace I know you said that the heat pump will be emergency

Very helpful but still confused for my heat pump thermostat. There is no C. I have a W, Y, R, G and B (Rheem) that I understand. Then also black wire to E and brown wire to X. One must be auxillary heat, the other? Hoping to wire a smart thermostat.

How would you wire in a safety float switch between thermostat and air handler or heat pump? To cut power if water builds up

Hello Sir, Is it possible to add reverse valve in the inverter ac's. The ac is of R32 gas and 2.2 ton mitsubishi electric GR series. If possible then what are the changes

Great video of how to wire thermostat to air handler and heat pump ..I’m working in a thermal zone heat pump split system with a wiser air smart thermostat that won’t turn heat on ,indoor blower comes on but no heat in the house , works fine on cooling mode but no heat . NEW THERMOSTAT WIRES are connected to new terminal phase plate Red to RC, Yellow to Y ,Green to G Brown to C and Blue to O/B any suggestion . Thanks in advance 🙏

@acservicetechchannel

4 жыл бұрын

You really need to turn the power off to the air handler and check to see what color wires are for which function inside the air handler in order to wire the thermostat, thanks!

about the wiring, I have an older Honeywell thermostat & I was told that where I have a white wire going to the "W2" that on the newer Honeywell connect it to the "E" slot. I have a heat pump with emergency heat. Is that correct?

I have a question, I have a non fused disconnect, but my ac went out so i am doing away with it and instaling a window ac/heat, it runs off 220 just like my ac does, so can i swap out the non fused cut off box for a 125 amp sub panel with a 220 breaker for my new ac window unit?

Question I’m trying to figure out a control circuit for a heat pump so I can feed the unit from the tenant panel for Air condition and from the house panel for heat,I want to install some rely to interlocking fro each other,do you have any idea of the best way to do it? Thanks Franklin

I have a question . I am going to replace my old thermostat that has only 4 wires connected R, G,W and Y. The B is not connected. My new thermostat has batteries, but the panel doesn’t have a letter W, do I connect the W wire to E?

First 🤔 but this early ACSERVICE TECH?

@acservicetechchannel

5 жыл бұрын

Ha ha, yeah a little early today! Thanks Gabriel!

Thanks. My outside heat pump(Rheem 13PJL30A01) unit won't turn on at AC mode. Traced inside and outside, everything seems fine except the outside contactor coil does not receive the 24V for start from the DFC control board.. On the control board(DFC), inlet wires from the house on lead R and C has 24V, but the out leads (Y and CC) that go out to the contactor coil has no voltage. Can I fix the control board DFC? or have to replace the DFC? Many thanks.

I know this is for a system with an electric heat in side but I guess this would also work for any other secondary heat source IE gas or even wood ect.

@acservicetechchannel

4 жыл бұрын

You would be looking for a duel fuel thermostat for that, thanks

@McCuneWindandSolar

4 жыл бұрын

@@acservicetechchannel I was asking because I have a Goodman air handler that is gas and a Goodman Heat pump. I have been thinking about getting one of those Nest Thermostats. But right now I have a honeywell thermostat. I will have to look at the thermostat and see if it will run the gas as the emergency heat source.

@acservicetechchannel

4 жыл бұрын

I have one video on duel fuel thermostat wiring but its not with a nest thanks!

@jasonjohnsonHVAC

2 жыл бұрын

@@McCuneWindandSolar the Nest is garbage. Get an EcoBee instead.

@McCuneWindandSolar

2 жыл бұрын

@@jasonjohnsonHVAC yea I ended up with the Carrier, that uses EcoBee. The Unite I have I can have up to 3 different Heat options set up, I right now have it set up for heat pump, and Gas. but I can either control wood, electric, or another 3rd source. Programing was a snap.

What would happen if the G wasn't hooked up - doesn't the Heat pump see the call for R+Y and know to turn the fan on using the internal furnace board logic? Is it really necessary for the thermostat to call for G in parallel? I was under the impression the G+R call is specifically when you want airflow without heating/cooling.

Excellent Job

@acservicetechchannel

5 жыл бұрын

Thanks Jeffrey!

Can I use a heat pump thermostat on regular a/c ?

From my heat pump, the tech installed - Orange, Blue, Red and black going to the control board at the furnace. But I’m not sure where they would go to. On the control board it shows - W , C, R, G, and Y