Why is my pilot light lit but no hot water?
A worn out thermocouple is one of the most common gas water heater problems. When thermocouples wear out, the pilot light goes out, the burner won’t light, and you will have no hot water. It’s possible to replace the thermocouple without removing the burner assembly, and many repair people do this.
Why do you need pilot light on gas boiler?
The way these older gas boilers work means a slow and steady stream of gas is always being fed from the gas pipe. The pilot light will ensure that the gas is constantly being burnt and producing the heat we desire.
How do you light a gas pilot light?
A pilot flame is lit with a manual push button spark ignitor or a handheld lighter while pushing down on the pilot plunger button found on the top of the gas valve. To light a gas pilot, the button on the combination gas valve must be pushed down which allows gas to enter the pilot tube and exit through the pilot termination head.
How does a standing pilot work on a gas burner?
On a standing pilot model we still use a thermocouple, but in a different way. The pilot valve is also built into the combination gas valve, so there’s no more “B” cock. To light the pilot, you hold down the button on the gas valve to start the flow of gas to the pilot burner.
What to do if the standing pilot light is out?
You look at the boiler and find that the pilot light is out. The heating unit (boiler or furnace) has a standing pilot with a thermocouple. The first step is to make sure there is gas. Shut the gas cock at the appliance and open a union or drip cap. Turn on the gas cock. If there is gas, shut the gas cock and retighten the gas union or drip cap.
Why is my furnace pilot not staying lit?
The most common reason the furnace pilot light won’t stay lit. Bad Thermocouple. A furnace thermocouple is a safety feature that regulates gas flow to your system based on whether the pilot light is on. In simple terms, the thermocouple checks to see if your pilot light flame is lit and turns off the gas flow if it senses that your pilot light is off, so you don’t have gas building up in your home.
Why does your pilot light go out?
However, if the light goes out frequently there could be other issues. Some of the possible serious reasons for pilot lights to go out include loose or broken gas valves, thermocouples or heat exchangers, faulty venting, low gas pressure, or high winds.
Why does my furnace pilot light keep going out?
If your furnace pilot light keeps going out, it’s likely you have a broken thermocouple in your gas furnace. The thermocouple is a rod that comes into physical contact with the flame in your system. This component will deactivates the gas when the pilot light goes out.
