Atwood Furnace problems
I have a new 2014 Thor ACE with an Atwood furnace. On our way home from Florida Sunday when we stopped for the night we had to use the furnace. It works fine until the thermostat is satisfied, then wh...
Forum Discussion
OK, let's go step by step.
We KNOW that the fan is running and that the sail switch is closing because the ignitor is sparking. That also means the gas valve SHOULD be opening.
Do you smell propane when you stand outside near the furnace when someone turns it on? If not, verify that propane is on at the tank. If so, do you hear/feel the propane solenoid "clicking" open?
If it tries to light-- i.e. you have BOTH spark and propane, but goes out, there is a problem with the thermocouple. The thermocouple's job is to tell the PC board that indeed there is a flame, so keep the gas flowing. Could be something as simple as a mud daubber's nest on the thermocouple, thermocouple not properly located, problem with wire from thermocouple to PC board or PC board problem.
Since it is under warranty, suggest it goes back to dealer.
We KNOW that the fan is running and that the sail switch is closing because the ignitor is sparking. That also means the gas valve SHOULD be opening.
Do you smell propane when you stand outside near the furnace when someone turns it on? If not, verify that propane is on at the tank. If so, do you hear/feel the propane solenoid "clicking" open?
If it tries to light-- i.e. you have BOTH spark and propane, but goes out, there is a problem with the thermocouple. The thermocouple's job is to tell the PC board that indeed there is a flame, so keep the gas flowing. Could be something as simple as a mud daubber's nest on the thermocouple, thermocouple not properly located, problem with wire from thermocouple to PC board or PC board problem.
Since it is under warranty, suggest it goes back to dealer.
