DIYbanter - View Single Post - Furnace not igniting (Comfortmaker RPJ II

Tony Hwang

wrote:
Oscar_Lives wrote:

wrote in message
oups.com...

The model # of the furnace is GNJ050N12D1.
I don't hear the zap, click sound which used to come before the sound
of flames.
A previous post mentioned a trouble code? Where can I check that?
I don't think it's the thermostat. I replaced my old one thinking that
was the problem. But with the new thermostat the exact same thing
happens: the furnace and fan come on, but the furnace doesn't ignite.

Did you polarize the thermostat when you installed it? Comfortmaker needs
the thermostat polarized and sync'ed with the controller board before it
will work correctly.

Thanks for the reply. Can you tell me how to polarize and sync the
thermostat or is special equipment required?

Hi,
He is trolling. Trouble code is blinking LED thru small glass window.
Count the blinks to come up with a code. Like ... . will be 31.
Either you have a manual or a sheet with list of code is on the cover
panel usually.