Does a thermocouple control the pilot light?

Does a thermocouple control the pilot light?

The thermocouple responds to changes in temperature by producing an electrical current that causes the gas valve that supplies the pilot light to open when the temperature is high or to close when there is no direct heat source.

Why is there no pilot light on my boiler?

No Pilot Light: When the boiler is not igniting and the pilot light has gone out, this usually means debris has blocked the jet. Even the smallest speck of dirt can block the jet and make the pilot light go out. Ultimately, the boiler does not ignite again.

Why is my Glow Worm boiler not igniting?

There are many potential reasons why there’s no heating or hot water in your home, including broken diaphragms and airlocks, failure of motorised valves, issues with the thermostat or low water levels.

Why is my thermocouple not working?

When a thermocouple fails, the pilot light won’t stay lighted. A burned out or broken thermocouple should be replaced. To replace a thermocouple: Step 1: Unscrew the copper lead and the connection nut inside the threaded connection to the gas line.

How do you clean a thermocouple on a boiler?

You’ll need a lint-free cloth, some emery cloth sandpaper, and a screwdriver. You should be done in under 20 minutes. Whatever you do, never use any cleaning products or liquid of any kind. All you need to do is scrape the thermocouple clean and then dry-wipe the residue.

Why is my thermostat not turning my boiler on?

Make sure you are programming your thermostat correctly and setting the temperature above the threshold in order to turn the heating on as when the temperature you set is too low, it may not trigger the heating to come on.

How do you light the pilot light on a glow worm boiler?

The lit pilot heats a metal strip that expands and pushes a linkage to open the main gas supply for ignition to the boiler as required. In order to light the pilot you had to hold the button down on the Honeywell valve to allow gas to the pilot flicking the piezo or glowplug to light the pilot flame.

How do you know if thermostat is not working on boiler?

Your boiler is working but your radiators are cold. If your thermostat is not communicating to the boiler, or the thermostat settings have changed, then your boiler could think that the house has already reached the right temperature. This means that the boiler will switch on, but wont heat your home.