Changed thermostat and Comfortmaker RPJ II Furnace won't work now...

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Hi, I have a comfort maker prj ii gas furnace. The blower turns on, the ignitor glows and it only ignites one side of the blower. I have a Filtrete 3M-30 Thermostat and I set it for 1 Stage. This morning I decided to switch it to the 2 Stage Heat and AC, but it still will only ignite one side. ...

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I have disconnected the unit at the power supply waited a few minutes and as soon as I power on inducer fan starts immediately no matter if its in heat or ac mode.

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I have a 13 yr old Comfortmaker RPJ II gas furnace controlled by a Honeywell digital thermostat. I have it programmed to turn on at 5:30AM. Lately, the furnace is not turning on (igniting, firing, blowing) in the morning even though its cold enough and the thermostat is sending a signal to the...

Comfortmaker RPJ II (2) gas furnace short cycling during idle [ 13 Answers ]

I have a Comfortmaker RPJ II (Enviro plus 90) gas furnace connected to a programmable thermostat that works and cycles on and off fine when inside temp is lower than set target temp - exhaust blower cuts on, pressure switch engages, igniter glows, valve opens, pilot lights, valve opens, jets...

Rpj comfortmaker combo [ 1 Answers ]

Just changed the control module because not enough voltage was going to the ignitor plug. Then the glow plug needed changing. Worked great for a few days. My 4 yr old messed with the thermostat then the heat didn't work again. Pulled the plug on the furnace to reset, then took the batteries out of...

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