sometimes the thermostat is not kicking it on,it is a honeywell programmable one.do these go bad?my rheem heater works fine when its on but the thermostat seems to not call for heat sometimes and i have to turn it on and off and adjust the temp to make it come on.it is an 80 criterion series horizontal attic setup 75k btu.filters clean and when it does come on it sequences just as book says it should.is one of the limits dirty ?i can provide model no in a while-unit is 7 years old .thank you
- posted
19 years ago