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Re: Furnace pilot is not igniting.
The first blower you hear is the inducer motor it pushes the exhaust out. sounds like abad gas valve.do you have a standing piloit light or is it eletronic ignition. if electronic and there is no glow you have a bad ignitor
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Honeywell is a controls company and makes a variety of auto-pilots. If this is a no spark problem,does the lead from the igniter go to a big PC board or a module. If a module, check voltage to the spark module or thermostat voltage to the ignition module. If it comes from a large board, the board may be bad. I'll need more Info. if this does not cover it for you.
Sounds like a fuel or ignition problem. If the unit does ignite when its reset it could be a bad Cad eye or primary control. If it does not light off when reset,DO NOT re-rest anymore and call the Heating contractor back to inspect and repair.
hook up the new transformer to the white (common) from the blower motor, and the lead from the blower motor hooked up to the heat term on the board. (just cut the wires and wire nut all three together)
Commonly outdoor wood boilers use a hot water coil mounted in the ductwork above your furnace. In this application the Ruud furnace is still using its blower assembly to circulate the warm air from the boiler to your home. If this is the case. Have your heating guy install a #50 relay on the furnaces blower motor to activate your much needed humidifier. If this is not the case and your Ruud furnace is totally independent of the boiler. Still install the #50 relay in the furnace and manualy activate the fan only feature on your thermostat.
The pressure switch is not allowing the igniter to heat up. Pressure switch is blocked or the flue is blocked. Take the draft fan off and inspect the flue. Also inspect the rubber hose connecting the fan and pressure switch make sure the ends are tight. Make sure the hose is clear and not restricted. And the pressure switch sometimes is position sensitive. I don't think it has been moved or anything. And very rarely do they go bad.
I would guess from the info provided that you only have two wires going to your thermostat which would explain why the fan switch doesn't work on the thermostat. You can bypass the thermostat as a first step in troubleshooting. After that it depends on the type of furnace, standing pilot or electronic ignition...