What do you mean about the resistance measurement under a heat command? A simple solenoid will always have a fixed resistance only varying some as it heats up. Why would it go to an open condition under a heat command?
I have a problem where the burner will ignite and cycle to regulate temperature in the beginning but over time it will stop working. The igniter goes into a state where it turns on then off repeatedly but the burner never ignites. when this happens I also don't hear the valves being pulled open by the solenoids. All the thermocouples seem to be working since the igniter still works. Why would the solenoids quit working? Do valves ever stick closed so that the solenoid can't open the valve?
ANSWER Hello Russ. You are correct. They do not open, they change out of range in resistance and do not work properly. If they are testing good, it is known for the valve to stick closed in some cases. There is alot more issues with the coils 279834 vs the valve W10500695.
Answered by AppliancePartsPros.com | Thursday, July 12, 2012