Wall Mount Gas Heater Keeps Shutting Off

Inspect the thermocouple to determine if it is dirty or damaged in some way.

Wall mount gas heater keeps shutting off.

We have a gas wall heater and we have been having episodes typically at night where the thermostat shows the temperature is below the desired temperature and the unit ignites turns on and runs for a couple minutes and then shuts off for about 30 45 seconds then turns on again runs for a couple minutes and then turns off again. Even if we turn the thermostat all the way up the heater will fire up and shut off irregularly. If you re sure there is gas the pilot aperture may be blocked. If so replace the entire valve.

It should be parallel to the pipe. The thermocouple is usually easily visible next to the pilot light. If it is dirty turn off the gas to allow the thermocouple to cool. As i said this is on my blue flame wall heater.

Then there is the piece where the flame for the heat comes up. Gas wall heater turning on and off. If you open and close the door at the bottom it will usually start up again. There could a fault in the gas valve s main burner solenoid causing it to draw excessive power and starving the pilot flame solenoid.

If there is or your heater runs on natural gas check the handle on the gas line. If your gas water heater keeps shutting off the thermocouple could be dirty bent or damaged. This also needs to be cleaned out. The fan limit switch is actually two switches in one body the fan switch and a limit switch.

Troubleshooting a home gas heater. This device is placed so that it senses. When properly installed propane and natural gas wall and room heaters provide trouble free comfort and when they do malfunction the problem is usually easy to. I am sure the thermostat is out of whack but that really isn t the problem.

This needs to be removed and blown out with compressed air. When the main burner shuts off either because of the thermostat s action or because of a cool thermocouple due to the sputtering pilot flame the heater may remain in the off condition depending on whether the pilot light happens to be extinguished when the burner cuts off. There is a vent hole in that nozzle on the side that gets clogged. Also there may be a pilot adjustment valve on your gas valve.