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If exhaust fan does not come on this may be a bad exhaust fan motor or we are not getting signal to motor. Can you give me a few more details?Do you have a volt meter for troubleshooting? Model on furnace?
OK I have the manual on your furnace on my desk.Tell me what the status lights on board are doing.
First step is to see if we are getting power to vent motor,Can you get meter to work or grab a cheap one at Walmart (about 15 bucks)
No problem What I want you to do is turn power off to reset board and then back on.Then call for heat and check to see if we are getting 120v to the vent motor.
There should be two wires going to exhaust motor.One lead on each wire.
Can you upload a pic showing what you did?
OK you had the red lead in wrong place.That is DC.
REd lead should be in the port by V/OHM/MA
Meter probably fried.
You could have damaged the board by doing that, creating a dead short through the meter.This may become more expensive than in the beginning.I hate it, but since you did not ask, I figured you were familiar with your meter.Stick meter leads in an outlet(Set to 200ACV and leads in right place) and see if you get 120v
I suspected. Meter is fried and board may also be shorted. Easy mistake to make but costly.
L1 is power into board. Try flipping circuit breaker off and back on.It may have tripped breaker instead of damaging board.
Ouch may have got board when you had the probe in wrong place. I think from here we need to get another meter and start from scratch.May have to replace board now.r if you prefer, get an onsite tech. Either way,I will be around tomorrow if you need help.