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I noticed that the exhaust/combustion air blower does not start blowing. Should that kick in before the gas starts. If it should, is there anyway to trouble shoot it without replacing it.
check to see if you are getting power to inducer motor if you get 120v and motor not comming on motor is bad and needs to be replaced...that is first in sequence of operation
When I depress the interlock switch that the blower compartment door usually engages, while checking for power at the plug that the wires from the motor plug into, I get power that cycles on and off very quickly - at the same speed the sparking is happening in the combustion air relay in the control panel. Is this normal, or maybe the relay is bad?
The door switch is good because I get steady power on the upstream side when the switch is engaged. I bypassed the relay and got steady power to the blower motor. It didn't start. Still not sure if the rapid, constant clicking in the relay is a sign of a bad relay or just caused by bad blower fan. However, now it sporadically does nothing when I engage the door switch, and I have to keep the button on it's face pushed in to allow power to flow through it. I'll assume either one, or both, need to be replaced, and post how it turns out.
Linear Mode
