Coleman heater gets stuck going off and on...
Posted: Thu Nov 22, 2007 1:02 pm
Coleman Furnace Model 7680B Series 856----Sometimes the furnace seems to get stuck and it keeps going off and on, off and on--especially when it is running at a higher temperature like 70 degrees...at 65 degrees it doesn't seem to happen or doesn't happen as often. Last winter I replaced the fan/limit with part no. S1-7975-3281, but perhaps it is defective. If I turn the furnace off for awhile it will work okay again. I've cleaned the blower fan and opened the registers--could it be the thermostat???
It has two limit switches #7680-379, one is on the front and one is by the blower, would these have anything to do with it--description says they turn off the gas at certain times.
Thanks for your help, Jardy
It has two limit switches #7680-379, one is on the front and one is by the blower, would these have anything to do with it--description says they turn off the gas at certain times.
Thanks for your help, Jardy