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.
Wall heater pilot light.
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.
Turn the thermostat to its lowest setting.
Another cause of a weak pilot is a faulty thermocouple.
If this pilot light ever goes out.
Lighting the pilot light on a gas heater is simple to do.
Light a gas wall heater with a long match or lighter the hardest part of this job is finding where you have to apply the flame.
In this hvac training video i show up close how the thermocouple pilot light and gas valve work on a water heater furnace fireplace as well as other ap.