Air Handler with Electric Strip Heating: Operation and Troubleshooting!

In this HVAC Training Video, I Explain How an Air Handler with Electric Strip Heating Works. I show How to Troubleshoot the Controls for the Fan and the Strip Heating. I Explain how to Test the Electrical Strip Heaters, the Sequencer, Control Board, Transformer, Thermal Limit, and Thermal Fuse with a Multimeter. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
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⚠️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
#hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #controlboard #airhandler #stripheating #electrical #troubleshooting #fan
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[@acservicetechchannel]

The E-Book, Paperback and Quick Cards: www.acservicetech.com/store The Paperback, Quick Cards at Amazon: www.amazon.com/shop/acservicetech Support the Channel- www.patreon.com/acservicetech Tool List- www.amazon.com/shop/acservicetech Related Videos: Related Videos: Air Handler Control Board Operation and Troubleshooting! kzbin.info/www/bejne/inbOZWuqjsp8acU HEAT SEQUENCER Operation, Timing, & Testing kzbin.info/www/bejne/jXSUm2NqqqaBm8U HVAC Thermal Limit Switches, Safety Sensors, & Troubleshooting! kzbin.info/www/bejne/hHnSd39ur5qtfac Heat Pump Thermostat Wiring Explained! Colors, Terminals, Functions, Voltage Path! kzbin.info/www/bejne/qpeVgKt5edyffLs Tools I Use Are Linked Below! 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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

[@chemistry694]

So my condenser calls for cooling in when set to heat and vis versa

[@jollyscaria1922]

Thankyou my best breathar all teom welcomed sight ex area welcome all proesgers and procvation es mind drevpelpment life pregres thankyou gues

[@daubendiek]

Nice video. One thing not covered is the problem I am having. My heat strips (Goodman) are always powered on, even with cooling selected so the A/C is kicking out warm air. I know the heat pump has a board that can turn on the heat strips for defrosting I believe it said. But if that isn't the problem what else could it be? it was working fine until the main breaker for the house failed, after that the heat is always on

[@Stephenwithaph-b1h]

It's how he says over??

[@mikemason9966]

I am a retired Mechanical Engineer with HVAC certifications with a strong electrical background and I worked in training as well. I only say that to make this comment. "This is the best presentation of the HVAC electric heating explanation I have ever seen". Thank you for taking the time to put together such an informative and crystal clear presentation. 2 Thumbs up !!

[@traviscozza7177]

I could swear I just read this exact same comment you made on another video...🤔

[@goodkao]

I’m a seven year hvac experience technician with residential and commercial equipment and I love this video. Thanks for making hvac videos.

[@acservicetechchannel]

Thanks for watching!

[@Markmk393]

This is one of the most informational and easy videos to follow. I’ve been a service tech for 2 years and I still go back and watch videos to keep me refreshed. This video is hands down one of the best. I’m located in south Florida and we had a some cold weather this past winter, and this video alone helped me diagnose a bunch of heating calls. We don’t really get them down here so I’m not always practicing checking heaters

[@acservicetechchannel]

That really is so awesome, thanks a lot!!!

[@fatbol526]

At the age lf 36 I have been in the field for 16 years now, and you by far are one of the greatest instructors that I have come across, I love you channel what you do is top tier

[@acservicetechchannel]

Thank you so much!!!

[@artolivares7573]

Honestly who gives this man a thumbs down.? This a great explanation. I’ve been in the HVAC industry for over 20 years and always learn something new every time I watch his videos .

[@Keeping-It-Real-55]

Should definitely be working as an instructor at an HVAC school. Ide get into the trade if he was my Boss. lol

[@aaronclark1599]

Probably a plumber 😉

[@kllgrogto5838]

HVAC technicians that don't want to share the good stuff

[@kennethhall1534]

@@Keeping-It-Real-55 l pp

[@dmilstone5709]

I agree 100% with you Art. I had a shitload of questions about how a 10kw heat strip was wired and how they operate in general. This guy doing the video was all about educating the novice technician as well as the very experienced tech. Made everything clear and answered all of my questions. Very good information presented at a professional level. No need for other videos...my man has it ALL COVERED. Peace to ya brother.

[@luisorantes863]

Thanks big time I am doing my apprentice on the field while I am going to the school at night Combining that with your videos everything is going well I really appreciate the time and effort that you put in the videos One more time thanks

[@acservicetechchannel]

Glad to help Luis!

[@juancarlos-mj6kq]

I am six months in my HVAC school and we were just doing this wiring last night and it is SO confusing. You make this look so easy. Jeez I wish I had you as my teacher 😅 you’re so good at what you do. Great video.

[@pilotrserra]

Thank god for people like HVAC SCHOOL. God is balancing corporate greedy with great KZbin teachers…thank you so much

[@acservicetechchannel]

Yes Bryan and his team do a great job for our industry!!

[@echosgaming4562]

He is an HVAC God! I'm almost 4 years in. 2 years service. I have learned so much from AC service tech!

[@acservicetechchannel]

Thank you for watching! I'm glad my channel has been such an educational resource to you!!

[@wonjonglee7854]

this was the most informative and the most helpful out of all the videos i've seen. a sign of true intelligence is when you can break down complicated subjects into simple concepts that are easy to understand. thanks so much!

[@metsrus]

this guy literally wrote the book on AC

[@doorguru168888]

Thanks!

[@acservicetechchannel]

Thanks so much!

[@Azzen234]

wow, i am a 3 year tech, and in the 3 years of residential service, ive only ran into 3 electric furnaces/heat pumps and i have no idea how they worked, luckily those calls were easy, this video basically did the job for me, its as simple as 1-2-3 haha

[@Alex-qz5zn]

Thank you for breaking it down, as a newer technician. This really helped with trouble shooting the electrical heating strip

[@doorguru168888]

I was looking at the schematic for my all-in-one trailer unit the other day and I was confused why the blower motor went to the common. Your video explained everything clearly. Thank you very much!

[@mudder4660]

Excellent video to prepare for return HVAC tech repair. Had blower but no heat, aux heat light flashing in unoccupied building after turning temp higher for cold weather. Found the HVAC tech did a maintenance service call weeks ago but failed to insert the power disconnect plug at outside heat pump. Installed disconnect and Heat Pump worked, but concerned if weeks of heat strip only damaged limit switches, fuse or heat strips as blower worked but no hot air prior to reinsertion of power disconnect plug.

[@acrepairnearme]

Wow awesome! I’ve just replaced that fan control board on a heat pump package unit. Seems like it’s a. Common part. Interesting I didn’t know about letters F and L on the limits. Almost don’t see the electric heaters here in south California. Now after watching this video its clear to me! Thank you Craig. You are the best!

[@acservicetechchannel]

I am glad to help and thanks for your support!

[@Nonnew705]

Lol the way you pulled out that thermal limit switch at 10:22. Great video

[@MrOrozcoandres]

I believe this is the best explanation I’ve seen on KZbin, thanks a lot.

[@acservicetechchannel]

That's great to hear Sarah, thanks!

[@WesProphecy2032]

I usually just work on washing machines and dryers, after watching your video it looks very similar on how a dryer is setup. I should be able to fix my old Trane electric central heater after watching this 2 or 3 more times. 👍

[@arronz6849]

I run a company and use your videos to help out my newer techs. It saves me a lot of time. You do a great job explaining in detail. However you made one mistake, on the single sequencer (M1,M2,M3,M4) the upper and lower level contacts close at the same time, 1-20 seconds. When you have a dual heat sequencer, 2 side by side or a second sequencer (M5,M6,M7,M8) powering the 3rd and 4th heat strips, the second one will close at the later time of 30-90 seconds. I just wanted to clear that up for newer techs watching this.

[@j_rainsgoat3929]

I have a icp unit recently replaced txv worked great a couple weeks. This morning I found ac running with heat strips on. Unplugged heat strips and now EVAP fan motor runs continuously.

[@thompsonorcino1122]

Just fixed my heater issue, thanks to your video. Thank you so much

[@broncheemims8493]

Thanks Craig for the info. I'm teaching electric heat right now this semester in college.

[@acservicetechchannel]

Thats awesome Bronchee! Have you checked out my AC book yet? We have teachers using this in schools now, thanks! If you need info, email me at [e-mail] thanks!

[@duaneroberson7447]

Extremely good explanation and demonstration of electric strip heating circuits

[@acservicetechchannel]

Thanks Duane!

[@willjoo5976]

Perfect..exactly what I was looking for..and exactly that same unit.. Perfect explanation..thanks

[@joseph-ine452]

Great info step by step. Going to the field now to tackle the troubleshooting. Thanks for your great video

[@michaelgordon898]

Top tier video!! So clear and informative. I could listen all day. Keep up the good work!!🤙🏾

[@dashiagamingchannel2588]

Thank alot many tech or maintenance guy don't understand this procedure I hope this clears it up for some thanks.

[@acservicetechchannel]

Thanks Q!

[@derekleonard186]

Thank you for putting this out there. Helped me T/S my air handler. Found the strip heaters were burned out. 1 question for you or the community here, what would cause 4 strip heaters burn out on a 4 year old air handler?

[@asylum8934]

As a newbie to the servicing field this was really helpful.

[@1Love1People1Destanie]

Outstanding! Thank for giving as deep detail.

[@Dvazjr08]

Daaaamn bro just make a series for everything and sell it this is sick

[@sy20list]

You always have very educational videos. Much appreciation! Keep it up.

[@acservicetechchannel]

Thank you very much!

[@x426x]

Thank you so much for taking the time to make this video

[@erycreyes6677]

Best explanation on earth👍

[@TheRealDegen100]

Best video yet on this topic

[@acservicetechchannel]

Thanks Cameron!

[@TheRealDegen100]

No problem. Thank you

[@LledStudentZGP1011]

Not all heroes wear capes.. much love .. thank you for the knowledge

[@angelgarcia2522]

As a new tech, this video really helps. Great explanation.

[@acservicetechchannel]

Thanks a lot Angel!

[@HectorVela-d8c]

I have a straight cool system with electric heat strips. Which part from the electric heat can create a short in my condenser contactor? Outside condensing contactor was having an electric short and went away when heater was disconnected. This happened during cooling mode. Thanks in advance for your support.

[@DanArr1]

Great video. I have to troubleshoot a system strip heater soon. Really helped.

[@acservicetechchannel]

Thank you for the support!

[@OutdoorsandCountryLiving]

What turns the compressor on and the reversing valve into position for hearing?

[@c.l260]

This video got me out of a jam today. Thanks!

[@850jake7]

Absolute amazing video i was having trouble doing this in class last night after watching this im sure ill do fine thanks a lot

[@CaPiPwNsKi]

Very clean, man you got a gift.

[@AZSpinnerMan]

Very helpful. Thanks for being clear and concise.

[@acservicetechchannel]

You're welcome!

[@sdrtech]

You said on your last video that the emergency heat energized the fan terminal 😮 so is the purple wire a fail safe incase the g terminal doesnt call

[@thepropertygurus.9940]

Always great explanations and videos

[@ranmc9770]

Very well done video. Not overly slow , you can tell he is assuming some technical abilities

[@j.anibalcueva662]

Fantastic explication

[@johnraylangstonjohnraylang5924]

Hello On a Goodmen unit as you are showing. Can I run the A/C unit with the heater breaker being turned off. Enjoyed your post.

[@sethshulman1864]

Great video! Is it possible to accidentally crosswire and have the heat strip activated when the blower is on, but the thermostat heat mode is set to off?

[@miguelmartinez267]

Thank you for your video well explained help me understand how it works

[@XdriftfreakX]

thank you for this video, very well explained!

[@jonathanpalma9051]

Even if jump r to w on a air handler still can bring the heating elements on With bad contacts on sequencer? Thanks

[@michaelcostello6991]

This training is great for any type of technical work. Thanks

[@themulesheriff3009]

Great video 👍

[@acservicetechchannel]

Thanks for watching!

[@bayouflats5054]

Is this compartment a mock up for training? I’ve only had 1/3rd the room for my paws and meter.

[@jacksarisun6640]

Thanks so much. The video is very educational and informative.

[@jamisongentle7161]

This is great information. I have a Trane unit almost identical to this and the fan delay relay was changed out but with a rly2807 that has normally open connector on relay. And in ac relay works fine, but in heat mode the fan will not come on unless thermostat switch fan on. I think someone put the wrong relay on this unit, as you said this system should have a normally closed relay.

[@andredsouza2320]

Thank you for the helpful videos. I've run into an issue with my electric furnace that happens atleast once ever couple of days: The thermostat will call for heat, but the furnace never comes on. While testing, the only way i've gotten it to work again is jumping the fan wires (R & G) for a second or two. 5 seconds after I do that, the furnace will kick on again and go off at the specified temperature. Do you know what could be causing this and how to troubleshoot? Last time this happened, jumping R and W did not work.

[@1stNeoSpartan]

You guys are the best

[@ankitdarda]

Hello, Thanks for informative video. I have quick question - recently, i have replaced my old 5k heat strip with 10k strip and connected all red/black wire as it was on 5k. But, when my unit runs it doesn't seems to be hot enough. Not sure if replacing with 10k did anything so I am not sure if I did something wrong? Please let me know if you can guide me. thanks

[@alexdaniels8349]

Do you have a video on heater interlock

[@jericosha2842]

This is your best video explaining this process. Thank you so much for going step by step. I watched several times until I have it imprinted into my brain. Thanks buddy!

[@acservicetechchannel]

Glad it helped!

[@jayceecombs6887]

Very good tutorial... not saying I'm 100%, but very well done, & easy listening! J

[@acservicetechchannel]

I appreciate that!

[@oscarmoreno768]

I would like you to make a video of how wire an air handler with hydronic coil. Ty.

[@regularguyfixes3142]

Mine didn’t do this. My capacitor and motor got stuck and we came home and emergency heat was on I could smell a hot wire smell. I check thermostat and aux heat was on with no air flow. I open the filter return and extremely hit air rushed out. I was like we’re lucky house didn’t burn down. Couldn’t figure out why it didn’t cut off when it got that hot. I replaced capacitor and blower motor and all is working now it seems. But still scary that the heat strips just stayed on.

[@Cool-FlowAC]

Did you Check if they bypassed the safety limit switch ?

[@commercialand]

When the temperature is cold my heat stops working but fan still works. And this past summer, it never got cold enough in house. Coild you point me in the right direction?

[@mrman5374]

This GUY IS THE BEST!!! I WATCH ALL HIS VIDEO GREAT EDUCATOR...THANK YOU

[@Keeping-It-Real-55]

absolutely amazing video explanation of the components in a furnace. and how they work. 👍

[@Novusilluminatus]

Excellent video as always!!

[@acservicetechchannel]

Thanks a lot!

[@HsingSun]

Thank you for your video. What is the function of Sequencer in the air-handler? Does it control timing for cooling on and off?

[@onemoreboat]

On a Carrier FB4CNF036 air handler there isn't a fan control board like you show in the video. All of the wires go into the fan motor. Is the fan control board built into the fan motor assembly?

[@WillieMakeit]

Speed taps

[@TheMaximomex]

I have a question. Does that blower motor runs on the same speed for cooling and heating? Since is the same common wire that power the blower motor.

[@dg7197]

Well done. Great video. Keep them coming!

[@NorCal-refrigeration]

Excellent video 🤘⚡️🤘

[@acservicetechchannel]

Thanks Nor-Cal! Many people including myself really appreciate what you are doing!

[@NorCal-refrigeration]

AC Service Tech LLC thanks!

[@ryan0883926]

I have a heat pump and my AC and Heat pump work fine. I tested my emergency heat by changing the mode at my thermostat and my blower turned on but no hot air was produced. If the blower is on, does that rule out any concerns of a bad/tripped breaker?

[@omarg609]

Hi there I have an air handler RHSL-HM2417JA and it is setup the same like in the video. I need to replace the wires from the breaker because they burned. My question is what are the gauges of the wires coming out of the breaker and what brand of wire do you recommend? Thank you for your time.

[@rafiullahsafi3462]

Thank You Excellent Explanation 👏

[@acservicetechchannel]

Glad it was helpful!

[@rastagrastag7784]

Well explained 👍 now i fully understand

[@jeffhenson5471]

If you wanted to disconnect the emergency heat for a generator, which wire would you break with the low voltage wire coming from the automatic transfer switch for the generator?

[@integrity5264]

Great video, thanks Craig

[@haithamreed]

Thank you so much for this video. 👍👍👍

[@aaronclark1599]

The best on KZbin

[@antoniosantos1552]

Thank you, really appreciate your time

[@chrisdyer232]

curious to know why there is a 7 second delay on the board for G?

[@Jesus-bs5fl]

Thanks Craig!

[@ranimouf]

Can you do a video on a heat strip that has no sequencer and the white wire from the thermostat is connected to the 24 v common on the contactor. I just want to know how it turns on and off. Thank you

[@youngjohn5076]

Such a great video . Thank you so much .

[@acservicetechchannel]

You are so welcome!

[@timpeterson2746]

Great video

[@allenalda9883]

great job my friend great job 👏 don't pay those thumb down any mind, they don't like you giving away secrets 😀

[@acservicetechchannel]

Thank you, I will

[@adriangarcia726]

I have a Goodman ac and I noticed that my blower won’t shut off it remains on even when I shut off the a/c. Any recommendations? Would help me a lot. Thank you.

[@nessnesu6202]

My question is in the MCA and MOCP for 240/208 for unit with electric heat. I always see like for example MCA 56/49 and MOCP 60/50 for 240/208. Wouldn’t the higher voltage mean a smaller breaker? Feel like the voltages or breakers labeled are backwards. FYI I am looking at a Lennox air handler for those numbers, but I see it on Carrier too.

[@acservicetechchannel]

I would need a pic of that to jog my memory on that one. Usually they only have only one per rating but I know what you mean. You could email the pic to [e-mail] thanks!

[@ramseytrain]

this looks like straight electric heat, got any videos on a heat strip such as on a Nordyne electric furnace wired into a heat pump such as Rheem or Goodman split system used in mobile homes

[@Smith-qt4us]

So is the green wire powered in heating? Or does that purple wire give 240 to the blower motor and turn it on? The purple wire on that relay is what confused me a bit?

[@scott5521]

how loud should these be? Mine is noticeably noisy in my apartment

[@lancerudy9934]

Video very helpful. Thank you. Keep videos coming

[@acservicetechchannel]

Thanks, will do!

[@mauricioramirez3012]

How would you identify how many heating elements there are in a unit. Sometimes I arrive to a unit and there’s no sticker or nothing.

[@1keykneedeep]

Great video. Well explained.