This device is central to the operation and can tell if the pilot light is on or off by an electrical current that is powered by the pilot s heat.
Pilot light not staying lit on wall heater.
We can go from there.
As a result the pilot doesn t get enough fuel to stay lit.
When the pilot on your wall furnace does not stay lit your furnace won t heat.
My gas wall heater will not stay on on a setting of 4 and below pilot light stays lit answered by a verified hvac technician.
Do this light the pilot while the knob is in the pilot position hold it down for 1 minute.
You may also be operating the on off pilot knob incorrectly.
Locate the pilot assemble holding screw and remove it.
Remove the hex nut that connects the gas line to the pilot assembly.
Then let the knob up and rotate it directly to on.
Furnaces of various kinds are gas powered and use a pilot light to supply heat to the unit including standard home furnaces and floor furnaces.
When your pilot light will not stay lit for more than a few moments turn the pilot light on and be sure it is aimed at the thermocouple.
If it is not you can bend the thermocouple back into alignment with the pilot tube but only after allowing everything to cool.
Gently pull the gas line out of the pilot assembly housing.
If the pilot light is not aimed correctly simply bend the thermocouple to line it up with the pilot tube.
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Now gently pull out the gas line.
If the thermocouple is too far from the flame this can cause the pilot to go out and shut down the propane heater.
As a result your pilot light assembly bottom will get exposed.
You can fix this easily by moving the thermocouple closer to the flame.
The initial flame of the pilot heats the thermocouple which will signal the valve to stay open and keep the pilot lit and the propane heater functioning.
If you suspect this is the case or you have noticed that your pilot light simply will not stay on for more than a few seconds turn the pilot light on and see if it is actually aimed at the thermocouple.
Most water heaters operate with a thermocouple.
This is also a likely cause if the pilot won t ignite at all.
Dirt and debris can collect in the pilot tube causing the flow of gas to be blocked.
Whenever the thermocouple detects an unlit pilot it turns off the gas as a safety precaution.
Thankfully a dirty pilot tube is the easiest issue to fix.
Be sure everything has cooled down before realigning the thermocouple and pilot light.
