Why Does My Pilot Light On Water Heater Go Out?

What causes a pilot light to go out on a water heater?

Some of the most common reasons that water heater pilot lights go out include: A faulty thermocouple. Over time, thermocouples can begin to malfunction and shut off the gas supply to the pilot light even if it’s burning properly. A bent or dirty thermocouple.

How do you clean a thermocouple on a water heater?

Clean the thermocouple – using the emery cloth sandpaper, sand the ends of the thermocouple and then give it a finishing touch with the lint-free cloth. Hopefully, you can get to the ends of the thermocouple without having to detach it from the assembly, but you may have to do that.

What do you do if your pilot light won’t stay lit?

How to Light Your Furnace’s Pilot

  1. Make sure the thermostat is in heat mode.
  2. Locate the pilot valve.
  3. Always turn the valve knob to the off position and make sure to wait at least several minutes for any residual gas to clear away.
  4. Get your match ready.
  5. Once the pilot stays lit, turn the pilot valve to the on position.
You might be interested:  Question: Why Wont My Water Heater Pilot Light Stay Lit?

How much does it cost to replace a thermocouple on a water heater?

Thermocouple – $20 to $150 The thermocouple is an apparatus that senses whether the pilot light is lit and triggers the gas control valve. Repairs typically cost about $150 to have it done professionally, though a new thermocouple itself only costs about $20 on average.

How do you know if you have a bad thermocouple?

If you can’t get the flame to light at all, and you’re sure the gas is on, there’s probably an obstruction in the pilot tube. If the flame lights and goes out when you release the gas control knob after holding it in for the recommended 20 to 30 seconds, that’s the sign of a thermocouple malfunction.

How long does a thermocouple last on a water heater?

All things considered, the question remains, “How long should my thermocouple last?” The answer to that question is that it depends on the application. In an ideal environment, that length of time can be indefinite.

What does it mean when your hot water heater won’t stay lit?

Thermocouple. If your gas water heater doesn’t stay lit, you may have a defective thermocouple. Most gas fired water heaters use a standing pilot to ignite the main burner. Changing the thermocouple does not involve any gas fittings but local regulations may require that a qualified gas technician perform the repair.

Can I clean a thermocouple?

The best way to clean your thermocouple is to use either a piece of steel wool or the coarse side of a sponge to gently clean off any soot or other remnants. You can use a pencil eraser to clean between the threads of the screw that connects the thermocouple to the control valve of your system.

You might be interested:  Readers ask: How To Repair An Eden Pure Heater?

Should the pilot light always be on in a gas furnace?

If you have an older gas furnace, your heating unit relies on a little blue flame known as a pilot light to ensure ignition of the burners. Since the pilot light needs to remain active, your furnace is always consuming some gas.

Does gas still flow when pilot light goes out?

If your pilot light repeatedly goes out, this is a likely culprit. If this flame sensor should fail, gas will continue to flow even after the pilot light has been extinguished, causing a safety hazard, and requiring immediate repair.

Why is my water heater not igniting?

The water heater pilot light is a small flame that ignites the gas burner on your water heater. If the pilot doesn’t relight, if it goes out right after lighting or if it goes out repeatedly, by far the most common cause is a bad thermocouple.

Can I replace a thermocouple myself?

It’s easy to replace and a new one costs $5 to $10. Rather than trying to unfasten the thermocouple inside the water heater’s burning chamber, it’s easier to remove the whole burner and thermocouple assembly. Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve.

What is the lifespan of a water heater?

Based on the manufacturer’s suggested service life, the life expectancy of a water heater is about eight to 12 years. That varies with the location and design of the unit, quality of installation, maintenance schedule and water quality.

What is the most common problem with water heaters?

A water tank that produces too little hot water is one of the many common water heater problems you may encounter. Usually this can be solved by turning up the temperature on the tank’s thermostat. Be careful, however, not to turn the temperature up too high, as this can be a scalding hazard. No hot water.

Leave a Reply

Your email address will not be published. Required fields are marked *