Have HVAC Questions? Ask an HVAC Expert for Answers
After burners ignite, does blower ever come on before it shuts down?
OK do you have a multi meter for troubleshooting?
I am suspecting you may have an issue with control board.Does new motor do same thing old motor did?
OK the motor gets its signal from relays on the control board.Different relays for heat cool and fan.So fan and cool can be ok but heat relay not closing. Do you get any error code on board other than the open limit code after it shuts down?
Any pattern to flashes like shown below?
OK now the model you sent me was for an ignition module, not blower control board.Do you see a different board that fan wires connect to?
Take your time.I am working on a couple of projects but will keep an eye out for your reply
OK if burners stay lit for that long and blower does not come on we are not getting power to motor. Do this, Turn fan to FAN ON and see if furnace will stay lit
Fan on should not effect burners from lighting, Disconnect the low speed fan wire.
OK how about burners?
OK go ahead and put wire back. You are going to need to get a meter and check to see if we get voltage to motor on low speed after burners come on.Since motor is new, I am suspecting relay not closing sending power to motor.
I will be here for awhile yet.If I have to leave,I can open to other experts so you are not left hanging
Do you see a wiring diagram maybe on blower panel inside that you can take a pic of? I have not been able to find wiring diagram online
OK tell me where the fan wires connect.If you can get a clear picture showing the fan wires where they connect with spade clips will help
Still waiting on pictures
Thanks. The red and white wires should be common and low speed.So what we want to do is put meter on red and white.Turn furnace to call for heat.30 seconds after burners light we should get 120v between red and white.
Let me know
You may be best to call in a tech at this point.I believe you may have more than one issue going on here, Furnace should do same thing everytime.
Yes. I can request a refund if not happy , but this is seemingly more than one issue.
The total should be the 28.00 but I can request a refund since we did not solve if you choose although I have spent time on this, my main goal is to help.
It is a one time fee for this question
I can also opt out and see if another expert may be more help.If not just request refund rather than rating