Repeated failures of the pilot to stay lit indicate that the thermocouple isn t heating up properly or isn t working.
Wall mounted gas heater pilot goes out with heat control.
Even a slight residue can make the thermocouple malfunction.
On 2015 02 21 by mod when the heater cycles the pilot goes out.
This will ensure proper power generation.
A number of reasons can cause the wall furnace to not light including a damaged thermocouple a clogged pilot.
A new standing pilot gas valve would replace all of these older style controls.
Make sure the flame of the pilot just barely wraps the thermocouple.
Craig it could be just a pilot adjustment or a failing thermocouple but because the loss of pilot could men loss of heat or dangerous conditions you ought to ask foe service by a trained heating service technician.
If the pilot goes out again after all this checking and cleaning you most probably need a new gas valve.
Gas valve are allowed 30seconds to fall out.
The fix here is as easy as removing the thermocouple cleaning it with a wire brush or something coarse even an ordinary dollar bill works and replacing.
In english that means a gas valve is slowed to continue to release gas for up to 30 seconds after the pilot fails.
Gas heaters whether they warm up air or water in a home rely on a pilot light to trigger the flame of the actual heater.
Your old g12 may have the separate baso and gas valves.
Pilot goes out the heater won t operate properly if the pilot flickers is too weak or goes out and the cause could also be blockages in the pilot tube.
If the pilot goes out when you release the button try again.
If so replace the entire valve.
Under constant exposure to a hot flame a thermocouple wears down over time.
When the pilot on your wall furnace does not stay lit your furnace won t heat.
If this pilot light ever goes out the heater has no way of actually.
When the heater cycles the pilot.