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rnwarington 01-14-2012 10:11 AM

Concord 80 gas furnace
i have a Concord 80 Plus Gas Furnace that is malfunctioning. It seems to reach room tempature and shuts off. and doesnt restart. I have to manually lower the temp on the thermostat till the thermostat clicks then turn the temp back up and the furnace will start. run for several minute warm the house nicely then shuts off and wont start again.

any thoughts on what might be the problem? the indicator light on the furnace blinks 6 times what ever that means

titanoman 01-14-2012 10:20 AM

A sticking thermostat?

hvac5646 01-14-2012 10:26 AM

A number of things could be wrong. Sensor, hi-limit lock out..

Need more info . model and serial would help.

A lot of older Concords had a Smart Valve that always failed as you describe.

rnwarington 01-14-2012 10:33 AM

Model: CG80UA100D14B-1
Serial #: S1601L15777

hvac5646 01-14-2012 10:48 AM

does this have a pilot type igniter?

hvac5646 01-14-2012 10:56 AM

And does it have a valve like this?

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