coldone
Jan 3, 2009, 10:01 PM
My gas heating system no longer works properly. When heat is turned on, the furnace seems to start fine, however after some time the burners turn off and the furnace keeps blowing cold air, effectively cooling down the house back to where it started. The time it operates OK is always different. It may work fine for an hour or 2, or it may kill the flames as soon as after 5 minutes.
I called the heating company before the New Year's; the guy inspected the furnace, cleaned the burners (they were indeed dirty), took $160 and left. I did not notice any difference. Then I replaced the original thermostat with a modern one--no difference again.
Simply turning off the termostat does not turn off the fan for considerable time, like 30 minutes or so. To stop the cold air from blowing in, I flip the circuit breaker switch.
The house was build in 1996; control board in the furnace -- White Rogers 50A50-471. The repairman mentioned that I might want to replace the control board, but it seemed OK to him, and he did not seem convinced about what's going on at all.
Any suggestions?
I called the heating company before the New Year's; the guy inspected the furnace, cleaned the burners (they were indeed dirty), took $160 and left. I did not notice any difference. Then I replaced the original thermostat with a modern one--no difference again.
Simply turning off the termostat does not turn off the fan for considerable time, like 30 minutes or so. To stop the cold air from blowing in, I flip the circuit breaker switch.
The house was build in 1996; control board in the furnace -- White Rogers 50A50-471. The repairman mentioned that I might want to replace the control board, but it seemed OK to him, and he did not seem convinced about what's going on at all.
Any suggestions?