Home Improvement Questions? Ask a Handyman for Answers
Hello my name is ***** ***** will be my pleasure to assist you. First try disconnecting one of the wires to the pressure switch and then reset the power to the furnace to see if the furnace will fire then. Also if you can locate the model number it will be helpful as we move forward.
okay the small draft inducer fan is not coming on. Is it the black one located inside the exhaust pipe?
Okay you will have to take it out disconnect the rubber tube going to the housing then take the screws out of the bottom and try getting the inducer out. A lot of times I have been able to get the going by taking them out and using wd-40 or some penetrating oil on the motor and spinning it with it out of the furnace. Once you have done this hook the wires back up without reinstalling it and turn the furnace on with a call for heat to see if the motor starts.
Okay you have checked the power at the plug to the motor?
The motor gets power from the combustion fan relay which is on the board if you locate the circuit board the blak wire to the inducer motor should be on terminal 4.
yes is the the wire plugged into the relay?
the motor may not be coming on because the board thinks the motor is already running because the pressure switch is closed without the inducer running. Take the wires off the pressure switch and see if there is resistance through the switch with the furnace off.
I think you have a bad board if you have disconnected the pressure switch and reset the power to the furnace and you are still getting the same error code then there is a short in the board.
if you are satisfied the we are done. Not a whole lot you can do if the board is bad. you will need to get a replacement.
we do not. There are a lot of websites online that will have the board. Shop around a little as they can run upwards of $300.
let me know if you need further assistance