I replaced the thermocoupler and the gas valve with a new valve itt general controls b67ra56 and nothing different it still won t stay lit.
Gas wall heater pilot light won t stay lit.
While not as common as thermocouple issues it s an easy fix and should thus be rules out early on.
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.
The flex tube provides fuel via the gas controller.
On occasion the tube can become kinked interrupting the flow of gas.
While this is an excellent safety feature a faulty thermocouple may decide arbitrarily that your pilot light is off when you want it on shutting down your pilot light and your furnace.
I have a gas wall heater and the pilot won t stay lit.
Thermocouples detect pilot lights by sensing the heat they produce.
When i hold in the pilot button to light it it does light but when you release it the flame goes out.
If it determines that the pilot light is off it shuts down the flow of gas.
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.