Duo-Therm Furnace Issue
Posted: Sat Dec 10, 2011 1:57 pm
Duo-Therm 900 series (90030-813) Gas Direct Vent Forced Air Furnace
Problem - the system works as it should when I turn the thermostat on with on/of switch. The fan starts, then the heat come on and the space heats up fine.
The problem is that once the space is heated, the heat will shut down but the fan continues indefinitely. It will not turn off and cycle again for a new heat cycle.
If I manually turn off at the thermostat, the fan will stop and I can get heat again by turning the unit on. I have left it on for several hours to see if the heat will turn on again, but the van just continues with no heat after the first "heat up" is finished.
What to do? Where to look?
Thanks in advance.
GARRY
Problem - the system works as it should when I turn the thermostat on with on/of switch. The fan starts, then the heat come on and the space heats up fine.
The problem is that once the space is heated, the heat will shut down but the fan continues indefinitely. It will not turn off and cycle again for a new heat cycle.
If I manually turn off at the thermostat, the fan will stop and I can get heat again by turning the unit on. I have left it on for several hours to see if the heat will turn on again, but the van just continues with no heat after the first "heat up" is finished.
What to do? Where to look?
Thanks in advance.
GARRY