Furnace Short-Cycling
2018 Furnace - Atwood/Dometic model AFSD20141 is short-cycling. I tried the following everything: Jumped the thermostat jumped the high temp limit switch jumped the sail switch removed disch...
Forum Discussion
agiannetti wrote:
Just received word from the shop - LP pressure is good, circuit board is good. Next step, inspect the orifice for debris.
HOW is the shop testing the LP regulator? A defective regulator will show GOOD LP pressure. It is when you are having a demand on the regulator that the regulator malfunctions and cannot keep the correct pressure with the volume increase. Is this unit at a shop? Or you just took the Regulator to them? A quick way to determine LP function without a Manometer is to turn on the LP water heater and the range burners and then start the furnace. IF the range burners diminish at all or almost go out when the furnace attempts to light, your LP regulator is bad. OR, if when you start the LP water Heater the range burners do the same diminish, your regulator is bad. Doug
