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Hello, bu motor running do you mean the exhaust fan?
The blower motor is running that would normally push warm air instead of cold
No it is running as well. It starts up first then the fan blower motor starts. Just no burner ignition
Yes - I can see that
How can I check if it is not closing? will it be visible?
I just pulled the hose off on the vent side not the pressure switch side and the plastic fitting pulled right out of the vent pipe. The end appears to be rusted off. Can that be sealed back up or does that vent piece need to b replaced?
OK - be back to you in a couple minutes -
You are a genius! I jumped the wires and the ignitor came on. I think the piece that broke must have a jam nut on the inside of the vent as well as on the outside. is that little plastic nipple available as a service part?
Does it have to be sealed up pretty tight in order to detect the pressure or is that switch pulling vacuum?