The pilot light works, but the heat will not turn on. We traced the thermostat and it runs to the heater, but it is not connected to any breakers. The wall heater worked for about 3 weeks and now not at all. We don't need a heater often here in Fort Worth, but it is getting ready to have a cold snap again and we need it to work.
SOURCE: williams 5009622 dual wall heater
It sounds like the gas valve has some debris in it that is causing internal relay from opening without some help. I would check and clean electrical connections on gas valve and make sure you are getting at least 24 volts to gas valve when thermostat iscalling for heat. I would also actuate gas valve several times in a row to see if it frees up any. If that doesn't help you probably need to replace gas valve. I think you will need a new valve but it's worth a try. Good luck. Thank you.
SOURCE: Once the heater reaches the set temperature at the
It sounds to me like you have some small dirt or rust particles inside the gas valve that are hindering the valve from fully opening. Before I spent the money for a new gas valve I would make sure that the burners were clean and also clean pilot orifice. Replace thermocouple if it appears to be burned or deformed. You can turn thermostat up a little bit at a time and try tappimg on valve body to see if you can get it to free up. Unfourtunatly there are no repairable parts insid the gas valve so if it comes to that you will need to replace the valve. Hope this helps you and thanks.
SOURCE: I have a williams wall
Bad gas valve most likely. He did right by replacing the pilot generator first.
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