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Yep. I finally figured these fan coils out just by sheer determination and checking voltage and stuff. I used to ask my bosses but they never gave me an explanation that took my lack of knowledge into consideration. Wish I would’ve found the channel sooner
The first air handler I installed without a board, I called the supply house. They didn't know either and opened another unit to see if mine had been left out. Looking back now, I grin at myself.
If it makes you feel any better I’m barely learning my wiring myself, and i realized I didn’t have a board on my first either, I didn’t panic just continued with the wiring, come to find out I plugged my red24v to white/heat. And left out my 24v coming from transformer I stayed at the job for an extra hour till I realized what I did lol 😂 the board wasn’t the problem it was my brain 🧠 I kept looking at my fuse like “ I think that’s supposed to be wired 😂 and followed the White wire going to the motor and said ahhh shiii
Thank You sir for your videos!! That really clears up a a lot of questions I had. Love your videos. I'm An HVAC student graduating this semester. Videos are made in a very professional way.
Thank you so much Craig, today I've just finished installing an electric heat kit for a ComfortMaker AH today. The problem I had was I couldn't find the exact electric heat kit for that AH so the installation was not simple as plug in the molex connectors together but I got to trace the wires and their functions cut it, wire nut them to make it works. I'm a veteran tech but still your video make I feel more confident to do it. Thanks again.
I agree with her. Drawing the video out to 15 minutes and allowing the mind to catch up before barreling on to the next application would bode well. On most of your other videos, you do that...but not this one.
My Trane Ac unit has this huge complicated board and an expensive multispeed blower motor. This multispeed blower is too expensive for my liking. They are not very reliable neither. I already bypassed the board and used a single speed fan and capacitor instead. Now I need to wire my heat, but the thermostat wire is only an old 18/2. I may have to move the thermostat to a more convenient location since it is nearly impossible to run a wire there. I want to put an 18/8 wire even if I don't use all the legs. I have been learning so much from your videos. I viewed them a few times. You are contributing a lot more to this world than you know. Thank you so much, sir.
I plan to direct my business to you, hands down the best in the business, and UA-cam in this catagory. thank you for your clear, well paced instruction and information.
How do I wire my thermostat ? For some reason I’m stumped, I’ve hooked up the four wires but can’t figure if I need to jump the wires? Please post another video like the unit in this video explaining this please.
You won’t be getting any voltage to the blue or the white wire which means the motor is probably good you could just get a new wiring harness or bypass that resistor give the blower voltage or jump it out see if it works through the blue or white wire
Thank you for this very informative video. I have this exact same wiring set up in my air handler and I'm looking to install an iWave R air cleaner but can't figure out how to wire it. All videos on installing it assume you have a circuit board. How would I wire it to this exact same wiring set up?
Great video topic. I would just suggest referencing a schematic after viewing each section for improved clarity and experience reading schematics. Thanks again for the video.
Thank you for this video! It is very relevant for me, as I have a HVAC without control boards. I have got an EcoBee thermostat which doesn't have batteries and I don't have the C wire running. doesn't have a control board that I can use with the adapter board EcoBee provides in such cases. I wander if it's possible to hook it up anyway?
Lennox cba27uhe I have the config you described and the blower motor does not come on, how do I jump it to see if it’s working, direct 120 power spliced into the 120 on the motor connector?
Did you remove the low voltage connector at speed tap and see if there was 24v calling for fan to turn on? If there is you have a tstat problem. If you dont have voltage, the module needs replacing.
Can you make a video converting an x13 to psc? I did mine using a relay, paid $90 for the motor and the capacitor and bought the relay in Amazon, x13 motor was selling for $340+tax at a local warehouse.
Thanks for your videos, they are excellent for those of us who are just starting out. I just have to install a carrier unit like the one in the video that does not have a board. Do you have a video that shows how to connect the cables? Thanks 🙏
Very informative video, thank you. I have this setup, same motor too. The motor won't stop even when the thermostat is turned off (ECOBEE), so I am guessing the control board on the motor is messed up. is that right? The only way to shut it off is to cut power at the 240V breaker.
Maybe adding a relay to kill the 240 volts coming in to the blower motor would work. Something similar to the one in the condenser unit that controls fan and compressor. 15 dollars vs hundreds. Just to be certain, buy a two pole one, so you break both lines of power, the same as throwing the breaker.
I have this same set up with electric heater. The air handler stays blowing on but on 2nd zone only. I checked thermostats, zone board, and hi limit, what should I check for next?
I wish you could still get a dependable furnace without so many computer boards We have a efficient tempstar made in 1990 with A/C and we like it simple/dependable
So is it safe to say, if I have this blower motor and it won't shut off, even with the thermostat disconnected, the module in the blower is probably shorted
What about the blower on delay and off delay that the control boards offer. Why dosnt this motor need delay on and off or is that feature just optional. Thanks for a great video.
great video! Question - I have the same set-up in the video but can't find my fuse. Any idea where it might be located? My basement air handler has the fuse connected to the red wire, but my attic unit does not have it. There's no control board so I'm stumped. Air handler is a Bryant. Thanks!
It would be nice if you went through the wiring diagram first in this video for us newbies. That way i think it would be easier understand as you go throught the components. Or you could refer to the wiring diagram as you go throught the components. Thanks for great video. Really interesting.
If I set the thermostat to heat and fan on, it would close the R-W and R-G contacts. It would then energize both speeds of the ECM motor. Isn't that harmful to the motor?
I had an intermittent motor fail on heat mode only with this type of setup. Drove me nuts. Customer was poor and couldnt replace the $400 motor with board inside motor, I cut it all out and put in a relay and basic motor. $70 vs $400 the customer almost kissed me! (Married back off)
I have a furnace like this and the coils stay on after the fan shuts off till they overheat and kick off the safety switch or whatever its called. Do I need a special thermostat to get the fans to delay? Is my heating coil getting stuck on? The coils don't shut off till there's a loud click.
I just replaced my blower motor with this same setup. I have no HVAC experience. Question - the new motor is not moving the same volume of air. can I move the 24volt blue wire to a different terminal (1 through 5) on the motor plug? Old fan had blue on post 2 and white on post 4.
And….. even in 2 ton air handlers with circuit boards get their boards bypassed fairly regularly bc they go bad so often. Results in fewer call backs just to eliminate the board (if possible)
How would I run my control to the thermostat from here ? just bought a house and my wires from my thermostat goes straight to the outside unit . I must be over looking something I bought a updated thermostat that needs a c wire to power it last one was ran on battery
I’m having an issue with this exact setup. My only problem is the fan is constantly blowing, even without a call for cool or fan. Literally exact same setup.
Yup control board is now part of the motor so if theres a problem you must replace the whole motor not just the board on the end of the motor. I have been replacing them with a basic relay and basic motor. Mich cheaper and MUCH more reliable.
How do you add a fan delay to this type system? The thermostat that was installed has no option to do that. It is a Honeywell T4 Pro. Merry Christmas All
How to connect those loose wires, I see they not connected in your unit same as mine. I bought used unit and try connect I don’t know what to do with those loose wires? 😕
x13 has proven to be junk, high failure rate especially at high SP levels. 3-5 year life, PSC 30+ years. So far ECM's have cost must more to operate then the $50 yr savings vs PSC. Now mandate ECM required on blowers, hopefully improved with a 10y war warranty.
I don't believe they're junk ? Could possibly be the ductwork and/or motor settings? These motors were designed in factory settings now being slapped in everything. I believe more research should be done in adverse conditions? JS 31+ years in & still going. Stay safe. Wear your safety glasses!
I wish I understood how you could just route the transformer common straight to the ground. I thought the ground was a safety in the case of a short. Wouldn't this common create a path to the frame at all times?
Perfect I was looking for this type unit makes me understand the wiring on the carrier. I been working with heatpump alot more in my area... quick question 🤔 I been leaving W1 wire disconnected from from the air handler since there no connection for W1. I connect the W2 wire from thermostat and w2 from condenser unit to white wire on air handler. Well that's the way I was train.
The W2 on a heat pump wiring setup is for secondary heat, so by not connecting w1 instead utilized W2 you utilized this circuit for the first stage heating you are taking out the heat strips for emergency heat or, furnace or hydronic secondary heat * if purchased feature/ some heat pumps client does NOT buy heat strips (rare). W1 left unhooked may be a problem if there IS heat strips present- to prevent blast of cold air during heating. IF there is a furnace and W2 is not connected properly or at all then that could be an issue. Some manufactures bundle W1/W2 , need read and interpret the wire schematic *i.e. relay used. Furnaces are being added more in the south i.e. texas due to Natural Gas availability and temps going below 40 degrees. Provide model # on unit your referring too in your comment. Being trained based solely on model is not a good trainer or education. Being trained on how to READ wire schematics would be the best practice FOR ALL models. If there are components mentioned above heat strips, furnance, etc and these circuit loads were not incorporated or left out of the circuit; then there will be issues.
@@proanswers thank you for the feedback. I'm also learning about the heatpumps.. the schematic is the same as the video heatpump. Schematic only shows w2 but not w1. Yes the unit I been working have heatstrips. I just want make sure the way I was being trained is the correct way.. also on the thermostat ecobee I'll modify by turning on W1 if you understand what I'm trying to say because thermostat won't program with out stage 1 heat.
@@emilionunez4566 Sounds like you have W2 conductor/wire installed at the thermostat (ecobee) under the W1 push tab which is correct since you dont have a W1. Bascially a single stage auxiliary heat then you don’t need W2. Both your auxiliary and emergency heat are activated by powering the single W1 (which is using W2); in this case you utilize the W2 signal conductor/wire
@@proanswers sounds about right... the other question the other day I was practicing trouble shooting by checking the 24v on the condenser wiring. I call for heat at the thermostat, I notice the Y1-yellow and W2-white were getting 24v at the same time. When call for cool the Y1 was the only one getting 24v.
In 2004 I had a York heat pump system installed in my Virginia home. The rep offered me a variable speed air handler with delayed fan cut off a d a few seconds of delayed fan start. The rep informed me that this would add one seer in efficiency. The new Trane unit that replaced it in 2021 has a 1970s antiquated peace of junk for an air handler with no modern efficient features. CAN ANYONE EXPLAIN TO ME WHY A COMPANY WOULD MOVE AWAY FROM EFFICIENCY? I will give credit to the 15 seer heat pump that it is quieter.
Mine doesn't have a control board but has a blend air box. My motor doesn't have a module on it also. Guess I have something rare haha im trying to replace transformer
If anyone can help Im a Hvac tech I have everything wired exactly heat pump with nest thermostat I’m haveing a problem with my blower never turning off even if the thermostat is set to off
My Blower Motor cuts on and off continuously. The condenser is running. I jumpered the thermostat and the same thing occurred with the motor. Since there isn't anything in the control circuit, besides the resistor, it must be an issue with the motor.
I had to replace the house a/c system and kept the ecm blower motor to cool my greenhouse, finding the wires configuration for it to run as a standalone blower has not been easy.
I have been looking for a year now for someone to go step by step, adding wire by wire in sequence WITHOUT the fan control board. For instance when the thermostat calls for heat this is what happens the white wire and the red wire inside the thermostat “touch” and that 24 volts goes to the blank. Or show step by step in sequence how the power goes through each device. Another way to say what I’m asking for is I guess a video where I can walk up to an air handler WITHOUT a control board and no wires at all connected and me be able to add each wire step by step correctly. I have the basic concept down but I’ve been in situations where due to others working on the unit and not exactly knowing what to do the whole air handler needs to be re wired….I’m looking for a video that shows me how to do that. Any ideas please let me know thanks
Thats just damn near impossible for some one to do. Every unit and how it was set up is different. Colors change all the time. There are many videos about low voltage and high voltage wiring of ac , furnaces, and air handlers. But mostly I'd suggest watching videos on how to read schematics and wiring diagrams, cause most units give you a very specific layout on how to wire everything if you can read them.
This explanation isn't really all the accurate but for simplicity you can come across a 24. Volt ungrounded control circuit that utilize what is called a "floating ground " which if you had a situation where you had a direct dead short would take out the component with the short as well as the transformer now with a grounded common given the same condition hopefully the fuse would blow on the transformer in other words the ungrounded way would let all the affected components just would sit there and burn up until the transformer gives out
I have an old air handler without a circuit board . And a fuse. I bypassed the thermosthat the other day trying to figure out a no start heater. In the proccess I short circuited something and now the AC is also won’t start. The first thing in my mind is to check the fuse but I can’t find it. Any suggestion is appreciated
If there is no fuse in the air handler, check to see if the secondary side of the transformer has opened up. Check the resistance with a multimeter to make sure it is not 0L, thanks!
Ac service tech , I pulled out the transformer and I checked the resistance, the secondary reads 1.6 ohms and the primary reads 12.1 ohms. So does this mean transformer is good? I checked the relays resistance also contact 1and 3 reads OL and the two opposite side contacts has resistance of 9.6 ohms.
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A freaking life saver man! first day as a supervisor and they gave me this exact model.
Without a doubt you are the best teacher I have ever seen. May God bless you greatly.
Wow, thank you
Yep. I finally figured these fan coils out just by sheer determination and checking voltage and stuff. I used to ask my bosses but they never gave me an explanation that took my lack of knowledge into consideration. Wish I would’ve found the channel sooner
I agree, you are incredible
The first air handler I installed without a board, I called the supply house. They didn't know either and opened another unit to see if mine had been left out. Looking back now, I grin at myself.
They don’t know shit they just try to sell new units
Don’t feel bad, I just did the exact same thing lol
If it makes you feel any better I’m barely learning my wiring myself, and i realized I didn’t have a board on my first either, I didn’t panic just continued with the wiring, come to find out I plugged my red24v to white/heat. And left out my 24v coming from transformer I stayed at the job for an extra hour till I realized what I did lol 😂 the board wasn’t the problem it was my brain 🧠 I kept looking at my fuse like “ I think that’s supposed to be wired 😂 and followed the White wire going to the motor and said ahhh shiii
Thank You sir for your videos!! That really clears up a a lot of questions I had. Love your videos. I'm An HVAC student graduating this semester. Videos are made in a very professional way.
Great to hear!
Thank you so much Craig, today I've just finished installing an electric heat kit for a ComfortMaker AH today. The problem I had was I couldn't find the exact electric heat kit for that AH so the installation was not simple as plug in the molex connectors together but I got to trace the wires and their functions cut it, wire nut them to make it works. I'm a veteran tech but still your video make I feel more confident to do it. Thanks again.
Wonderful video, I just started on the field. You are going a little too fast for me, but It is because of my lack of knowledge. Thank you so much.
Lana if you ever need help I can always help. You can Skype me:
Shack Adoodleoya
Grew up in HVAC-R family.
I agree with her. Drawing the video out to 15 minutes and allowing the mind to catch up before barreling on to the next application would bode well. On most of your other videos, you do that...but not this one.
My Trane Ac unit has this huge complicated board and an expensive multispeed blower motor. This multispeed blower is too expensive for my liking. They are not very reliable neither. I already bypassed the board and used a single speed fan and capacitor instead. Now I need to wire my heat, but the thermostat wire is only an old 18/2. I may have to move the thermostat to a more convenient location since it is nearly impossible to run a wire there. I want to put an 18/8 wire even if I don't use all the legs. I have been learning so much from your videos. I viewed them a few times. You are contributing a lot more to this world than you know. Thank you so much, sir.
You could use a wireless thermostat as well and move it where you like at anytime depending on the type
I plan to direct my business to you, hands down the best in the business, and UA-cam in this catagory. thank you for your clear, well paced instruction and information.
Thank you so much and remember that we have HVACR articles, tips, calculators and quizzes at our website at www.acservicetech.com thanks!
I was trying to figure out how to change my blower motor speed on my carrier FB4C and this was very helpful for it as well thank you.
Thanks for explaining in details. My daughter bought a new house and looking at AC wondering what kind of ac with no control board. Now i know THANKS
The Trane Run Tru...just installed one last week ...
You're welcome!
This video was very helpful, I just replaced my blower module and fixed my fan that would not shut off
I'm having this same issue. What did you replace? The fan motor piece?
@@ashleehouse5204 I bought just the control board. It cost $280 and just plugged into the fan
I just ran Into this. You were right on time.
You thought me something today! Thank you!!!
How do I wire my thermostat ? For some reason I’m stumped, I’ve hooked up the four wires but can’t figure if I need to jump the wires? Please post another video like the unit in this video explaining this please.
is it possible to wire a wall thermostat to a 220v Window unit? your videos are great, thanks
Great vídeo!
Can those Resistors failed? What would happen if it fails and how can you troubleshoot a failed resistor?
You won’t be getting any voltage to the blue or the white wire which means the motor is probably good you could just get a new wiring harness or bypass that resistor give the blower voltage or jump it out see if it works through the blue or white wire
Great presentation I’ve installed hundreds of them if not thousands
Thank you for this very informative video. I have this exact same wiring set up in my air handler and I'm looking to install an iWave R air cleaner but can't figure out how to wire it. All videos on installing it assume you have a circuit board. How would I wire it to this exact same wiring set up?
Great video topic. I would just suggest referencing a schematic after viewing each section for improved clarity and experience reading schematics. Thanks again for the video.
Thank you so much. Great video
Thank you for this video! It is very relevant for me, as I have a HVAC without control boards.
I have got an EcoBee thermostat which doesn't have batteries and I don't have the C wire running.
doesn't have a control board that I can use with the adapter board EcoBee provides in such cases.
I wander if it's possible to hook it up anyway?
Lennox cba27uhe I have the config you described and the blower motor does not come on, how do I jump it to see if it’s working, direct 120 power spliced into the 120 on the motor connector?
Great video. Question: what electronic on the ECM module turns the blower off? Mine will not turn off. I have to turn off breaker to shut it off.
Did you remove the low voltage connector at speed tap and see if there was 24v calling for fan to turn on? If there is you have a tstat problem. If you dont have voltage, the module needs replacing.
Good work bro
Thanks
Best video ever 🫡👋
Oh and thanks for your videos!
Great video!
Glad you enjoyed it
Can you make a video converting an x13 to psc? I did mine using a relay, paid $90 for the motor and the capacitor and bought the relay in Amazon, x13 motor was selling for $340+tax at a local warehouse.
Can you explain the purpose of the resistor in more detail. It would be nice to have a deeper understanding of its purpose. Thanks Michael
Thanks for your videos, they are excellent for those of us who are just starting out. I just have to install a carrier unit like the one in the video that does not have a board. Do you have a video that shows how to connect the cables? Thanks 🙏
Thank you for the video you are the best
Very informative video, thank you. I have this setup, same motor too. The motor won't stop even when the thermostat is turned off (ECOBEE), so I am guessing the control board on the motor is messed up. is that right? The only way to shut it off is to cut power at the 240V breaker.
Maybe adding a relay to kill the 240 volts coming in to the blower motor would work. Something similar to the one in the condenser unit that controls fan and compressor. 15 dollars vs hundreds. Just to be certain, buy a two pole one, so you break both lines of power, the same as throwing the breaker.
Hi! Does the 24v transformer have any other specs? Or dors the motor sticker tell me what Va/watts is max?
I have this same set up with electric heater. The air handler stays blowing on but on 2nd zone only. I checked thermostats, zone board, and hi limit, what should I check for next?
I have an air handler with no main board. Want to install wifi amazon thermostat. Can it be done?
I wish you could still get a dependable furnace without so many computer boards We have a efficient tempstar made in 1990 with A/C and we like it simple/dependable
Hoohweeeh thanks sir, from Guam
How do you wire up a heat pack on those? With straight AC outside.
@acservicetechchannel. Which one is the white(neutral) wire on or near that transformer ?
Is it possible to connect a Ecobee that can control multi speed and use to control the AC speeds?
So is it safe to say, if I have this blower motor and it won't shut off, even with the thermostat disconnected, the module in the blower is probably shorted
Isn’t that resistor for directional voltage for the heat or cool tap? Thanks
What about the blower on delay and off delay that the control boards offer. Why dosnt this motor need delay on and off or is that feature just optional. Thanks for a great video.
Do these on older systems that just have wires, relays, and transformers. That have me a headache starting out.
great video! Question - I have the same set-up in the video but can't find my fuse. Any idea where it might be located? My basement air handler has the fuse connected to the red wire, but my attic unit does not have it. There's no control board so I'm stumped. Air handler is a Bryant. Thanks!
Follow the wiring from the transformer.
It would be nice if you went through the wiring diagram first in this video for us newbies. That way i think it would be easier understand as you go throught the components. Or you could refer to the wiring diagram as you go throught the components. Thanks for great video. Really interesting.
If I set the thermostat to heat and fan on, it would close the R-W and R-G contacts. It would then energize both speeds of the ECM motor. Isn't that harmful to the motor?
I had an intermittent motor fail on heat mode only with this type of setup. Drove me nuts. Customer was poor and couldnt replace the $400 motor with board inside motor, I cut it all out and put in a relay and basic motor. $70 vs $400 the customer almost kissed me! (Married back off)
Can you do a series on Lennox communicating equipment?
Do you have instructions videos on refrigeration unit’s?
He's got a book he covers everything
@AC Service Tech LLC As a rule of thumb is the fan speed for A/C supposed to be faster than heat or the other way around? Thanks
Does the 34V common always have to be grounded. ? Is this just to make fault finding easier so you can measure voltage using the chasis
I have a furnace like this and the coils stay on after the fan shuts off till they overheat and kick off the safety switch or whatever its called. Do I need a special thermostat to get the fans to delay? Is my heating coil getting stuck on? The coils don't shut off till there's a loud click.
Check the sequenser. The part that normally energizes and de-energizes heat strips may have sticking contacts.
@@officerkrupke4966 I replaced it and wasted 50 dollars. The furnace guy thought it was the problem as well. At this point i have no idea
@@vanmasterflash7153check to see if the heating coil is grounded. Look for telltale black marks on frame where coils could be touching.
I just replaced my blower motor with this same setup. I have no HVAC experience.
Question - the new motor is not moving the same volume of air. can I move the 24volt blue wire to a different terminal (1 through 5) on the motor plug? Old fan had blue on post 2 and white on post 4.
Call the manufacturer to get correct tap setting.
And….. even in 2 ton air handlers with circuit boards get their boards bypassed fairly regularly bc they go bad so often. Results in fewer call backs just to eliminate the board (if possible)
How to bypass ICP air handler fan delay in cooling to reduce humidity?
How would I run my control to the thermostat from here ? just bought a house and my wires from my thermostat goes straight to the outside unit . I must be over looking something
I bought a updated thermostat that needs a c wire to power it last one was ran on battery
I’m having an issue with this exact setup. My only problem is the fan is constantly blowing, even without a call for cool or fan. Literally exact same setup.
Stumped me today. Wasn’t able to figure out why it kept running. Nest thermostat, 4 wire setup. Going back to it next week
Could be a bad thermostat, take the face of the thermostat if blower turns of its the tstat
Im dealing with same issue with a new nest thermostat my blower won’t turn off
How did u fix this I have same problem
This is exactly what I tell people to buy. The must basic Rudd unit with no freaking computer boards.
The micro-controller is stil there, it potted inside the end bell of the the motor. And cost as much as a new indoor unit to replace.
Yup control board is now part of the motor so if theres a problem you must replace the whole motor not just the board on the end of the motor. I have been replacing them with a basic relay and basic motor. Mich cheaper and MUCH more reliable.
How do you add a fan delay to this type system? The thermostat that was installed has no option to do that. It is a Honeywell T4 Pro. Merry Christmas All
What about Y? Where does the yellow wire from the tstat land for cooling??? I’m used to control Boards and not all this loose wiring haha thank you!
Yellow would go directly to tstat wiring coming from condenser.
How to connect those loose wires, I see they not connected in your unit same as mine. I bought used unit and try connect I don’t know what to do with those loose wires? 😕
x13 has proven to be junk, high failure rate especially at high SP levels. 3-5 year life, PSC 30+ years. So far ECM's have cost must more to operate then the $50 yr savings vs PSC. Now mandate ECM required on blowers, hopefully improved with a 10y war warranty.
I don't believe they're junk ? Could possibly be the ductwork and/or motor settings?
These motors were designed in factory settings now being slapped in everything.
I believe more research should be done in adverse conditions?
JS
31+ years in & still going.
Stay safe.
Wear your safety glasses!
14 seer is mandated you can still have a PSC motor and obtain the seer rating.
X13 motors are great. The reason they fail is due to undersized ducts, 1 inch filters, and power surges.
X13 is $229 on amazon right now, psc is $80 so yes price difference but don’t slap an x13 on a poorly ducted system!
Awesome video just subscribe. How could you check for power?
We test with a multimeter at the lugs inside the air handler after removing the cover.
thank you you the best
That’s my set up i have a payne ac unit by carrier
I wish I understood how you could just route the transformer common straight to the ground. I thought the ground was a safety in the case of a short. Wouldn't this common create a path to the frame at all times?
Perfect I was looking for this type unit makes me understand the wiring on the carrier. I been working with heatpump alot more in my area... quick question 🤔 I been leaving W1 wire disconnected from from the air handler since there no connection for W1. I connect the W2 wire from thermostat and w2 from condenser unit to white wire on air handler. Well that's the way I was train.
The W2 on a heat pump wiring setup is for secondary heat, so by not connecting w1 instead utilized W2 you utilized this circuit for the first stage heating you are taking out the heat strips for emergency heat or, furnace or hydronic secondary heat * if purchased feature/ some heat pumps client does NOT buy heat strips (rare). W1 left unhooked may be a problem if there IS heat strips present- to prevent blast of cold air during heating. IF there is a furnace and W2 is not connected properly or at all then that could be an issue. Some manufactures bundle W1/W2 , need read and interpret the wire schematic *i.e. relay used. Furnaces are being added more in the south i.e. texas due to Natural Gas availability and temps going below 40 degrees. Provide model # on unit your referring too in your comment. Being trained based solely on model is not a good trainer or education. Being trained on how to READ wire schematics would be the best practice FOR ALL models. If there are components mentioned above heat strips, furnance, etc and these circuit loads were not incorporated or left out of the circuit; then there will be issues.
@@proanswers thank you for the feedback. I'm also learning about the heatpumps.. the schematic is the same as the video heatpump. Schematic only shows w2 but not w1. Yes the unit I been working have heatstrips. I just want make sure the way I was being trained is the correct way.. also on the thermostat ecobee I'll modify by turning on W1 if you understand what I'm trying to say because thermostat won't program with out stage 1 heat.
@@emilionunez4566 Sounds like you have W2 conductor/wire installed at the thermostat (ecobee) under the W1 push tab which is correct since you dont have a W1. Bascially a single stage auxiliary heat then you don’t need W2. Both your auxiliary and emergency heat are activated by powering the single W1 (which is using W2); in this case you utilize the W2 signal conductor/wire
@@proanswers sounds about right... the other question the other day I was practicing trouble shooting by checking the 24v on the condenser wiring. I call for heat at the thermostat, I notice the Y1-yellow and W2-white were getting 24v at the same time. When call for cool the Y1 was the only one getting 24v.
@@emilionunez4566 On a heat pump tstat in heat mode, if it is set more than two degrees above ambient, it will power heat strips as well as condenser.
In 2004 I had a York heat pump system installed in my Virginia home. The rep offered me a variable speed air handler with delayed fan cut off a d a few seconds of delayed fan start. The rep informed me that this would add one seer in efficiency. The new Trane unit that replaced it in 2021 has a 1970s antiquated peace of junk for an air handler with no modern efficient features. CAN ANYONE EXPLAIN TO ME WHY A COMPANY WOULD MOVE AWAY FROM EFFICIENCY? I will give credit to the 15 seer heat pump that it is quieter.
Mine doesn't have a control board but has a blend air box. My motor doesn't have a module on it also. Guess I have something rare haha im trying to replace transformer
Man. Thats my air handler
What kind of cable can I use for an air controller without a control board?
So if the blower runs continuously even with the Thermostat un-pluged from the wall-plate, is that mean the ECM motor module needs to be replaced ? ..
Did you figure this out? I have the same issue currently
@@andreiglesias5876 yes .. needed a new ECM module which is built in the end-bell cover. I might have paid $250 to order one.
@@samm928 thank you!
If anyone can help Im a Hvac tech I have everything wired exactly heat pump with nest thermostat I’m haveing a problem with my blower never turning off even if the thermostat is set to off
My Blower Motor cuts on and off continuously. The condenser is running. I jumpered the thermostat and the same thing occurred with the motor. Since there isn't anything in the control circuit, besides the resistor, it must be an issue with the motor.
I had to replace the house a/c system and kept the ecm blower motor to cool my greenhouse, finding the wires configuration for it to run as a standalone blower has not been easy.
Without the board. Does it still have a fuse
Where can i get those plugs and x 13 motor plugs
Window air conditoner ice form. Fan speed okay. Thermostat okay. No leakage. But ice come to evaporator inlet
lol call an HVAC company.
How to wire up the ac to this
I have been looking for a year now for someone to go step by step, adding wire by wire in sequence WITHOUT the fan control board. For instance when the thermostat calls for heat this is what happens the white wire and the red wire inside the thermostat “touch” and that 24 volts goes to the blank. Or show step by step in sequence how the power goes through each device. Another way to say what I’m asking for is I guess a video where I can walk up to an air handler WITHOUT a control board and no wires at all connected and me be able to add each wire step by step correctly. I have the basic concept down but I’ve been in situations where due to others working on the unit and not exactly knowing what to do the whole air handler needs to be re wired….I’m looking for a video that shows me how to do that. Any ideas please let me know thanks
Thats just damn near impossible for some one to do. Every unit and how it was set up is different. Colors change all the time. There are many videos about low voltage and high voltage wiring of ac , furnaces, and air handlers. But mostly I'd suggest watching videos on how to read schematics and wiring diagrams, cause most units give you a very specific layout on how to wire everything if you can read them.
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Wow ok so that’s why that Lennox air handler didn’t have a board. ECM motor takes care of it
Split ac no leakage . Blower speed okay. Cut off okay but discharge line ice form make one video
Sounds like a restriction. Maybe the liquid line drier?
@@nmbr1son64 check the fan speed & system pressures.
@@scoutwar1474 he said the blower speed was OK.
I have none of that lol I just got 2 clips idk why lol
Why does common go to ground???? Don’t you need common to complete the 24vcircuit on your contactors?
This explanation isn't really all the accurate but for simplicity you can come across a 24. Volt ungrounded control circuit that utilize what is called a "floating ground " which if you had a situation where you had a direct dead short would take out the component with the short as well as the transformer now with a grounded common given the same condition hopefully the fuse would blow on the transformer in other words the ungrounded way would let all the affected components just would sit there and burn up until the transformer gives out
I have that same unit, now nothings working.. 😡😡😡
So this doesn't have a fuse
Thanks!
Glad it helped, thank you!!!!
I have an old air handler without a circuit board . And a fuse. I bypassed the thermosthat the other day trying to figure out a no start heater. In the proccess I short circuited something and now the AC is also won’t start. The first thing in my mind is to check the fuse but I can’t find it. Any suggestion is appreciated
If there is no fuse in the air handler, check to see if the secondary side of the transformer has opened up. Check the resistance with a multimeter to make sure it is not 0L, thanks!
Thanks , I’ll give it a shot!!
Ac service tech , I pulled out the transformer and I checked the resistance, the secondary reads 1.6 ohms and the primary reads 12.1 ohms. So does this mean transformer is good? I checked the relays resistance also contact 1and 3 reads OL and the two opposite side contacts has resistance of 9.6 ohms.