Wall Mounted Gas Heater Troubleshooting

You may have a bad thermocouple.

Wall mounted gas heater troubleshooting.

Either remove blockage or replace burner. A manual fan on switch could be set at the thermostat or at the limit switch in the air handler furnace itself or wires could be shorted together in the thermostat wiring or there could be a bad fan controller itself. Heater is blowing cold air. If so turn off fireplace and let cool.

If you re sure there is gas the pilot aperture may be blocked. On 2017 10 10 by mod wall mounted gas heater fan runs even though the thermostat is off. Periodically inspect all burner flame holes with the fireplace running. If there is or your heater runs on natural gas check the handle on the gas line.

All slotted burner flame holes should be open with yellow flame present. If you re wondering why your heater is blowing out cool air the first thing you should do is check your thermostat and make sure it s set to the correct temperature. It should be parallel to the pipe. During the course of servicing your heater you may have to disassemble a gas fitting so it s a good idea to have a small wrench some pliers and a screwdriver handy and a bit of basic.

But when you turn the pilot to on the unit burner and pilot go out after about two minutes. Try kicking it up a notch to see if there s a noticeable difference.