You may also be operating the on off pilot knob incorrectly.
Pilot light not staying lit on wall heater.
If the thermocouple is too far from the flame this can cause the pilot to go out and shut down the propane heater.
Remove the hex nut that connects the gas line to the pilot assembly.
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When the pilot on your wall furnace does not stay lit your furnace won t heat.
We can go from there.
You can fix this easily by moving the thermocouple closer to the flame.
As a result your pilot light assembly bottom will get exposed.
This pilot light may not always stay lit due to a variety of issues that may affect the gas supply or ignitor.
Whenever the thermocouple detects an unlit pilot it turns off the gas as a safety precaution.
If the pilot light is not aimed correctly simply bend the thermocouple to line it up with the pilot tube.
This is also a likely cause if the pilot won t ignite at all.
As a result the pilot doesn t get enough fuel to stay lit.
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.
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.
If it is not you can bend the thermocouple back into alignment with the pilot tube but only after allowing everything to cool.
Then let the knob up and rotate it directly to on.
Dirt and debris can collect in the pilot tube causing the flow of gas to be blocked.
Do this light the pilot while the knob is in the pilot position hold it down for 1 minute.
Do not rotate it to off first.
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.
Most water heaters operate with a thermocouple.
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.
Now gently pull out the gas line.
Thankfully a dirty pilot tube is the easiest issue to fix.
Gently pull the gas line out of the pilot assembly housing.
Locate the pilot assemble holding screw and remove it.
A number of reasons can cause the wall furnace to not light including a damaged thermocouple a clogged pilot.
