Gas water heater Thermocouple
The gas water heater thermocouple is a safety device. It senses when the pilot light is on. When the pilot is not lit the gas valve will not turn the gas on. Make sure the problem is not your '', before you attempt this repair.
You could be looking at an hour to change it and ten or fifteen dollars for the part. The thermocouple is made of two different metals that are bonded together.
There are (3) key things related to the thermocouple. 'Purchasing a Thermocouple', you can get generic ones that fit most water heaters at a hardware store. 'Removing the Burner Assembly', you will have to take the burner assembly out to change the thermocouple. 'Installing a Water Heater Thermocouple', With the burner assembly removed, installing the thermocouple is fairly easy.
The end of the thermocouple is situated in the pilot light. As long as the pilot light is lit the gas valve senses it via the thermocouple. With the pilot light lit the gas valve will let gas go to the burner.
When the thermocouple starts to fail it will send the wrong signals to the gas valve. The gas valve 'thinking' that the pilot light is out will shut off the gas. The burner won't light and the pilot light will go out. The translation of that is 'NO HOT WATER'. This is usually where the complaining starts. See what you need to do to correct this by reading on.
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Gas Water Heater Thermocouple - Information
The part is less than $20. It is a little bit of work to replace it. You will probably be looking at $100 to $125 in labor. This is assuming that you don't get talked into a new water heater. A new water heater can run $800 to $1, 500 installed, depending on the type.
Repairing a gas water heater thermocouple usually means that it needs to be replaced. You have to unhook the piping from the manifold and shut down the hot water tank. No draining for this repair.
These repairs will have a Difficulty Level of: A Bit of Work
These repairs require a Skill Level of: Handyman
Try the pilot light first. If you have gotten to this article you have probably already tried.
The hot water heater will not work with a bad gas water heater thermocouple. Not getting it back together or getting it installed incorrectly will leave you without hot water. You are also dealing with natural gas. Make sure the gas is turned off before you attempt any repairs. Gas can explode, make sure the valve is in the off position before you unhook anything.
Gas Water Heater Thermocouple - The Steps Involved
At this point you must be convinced that your problem is your thermocouple. You should have checked out the article ''. Not sure it is your thermocouple? Didn't read that article? Take a step back and follow the link to make sure.
The 'Next' section discusses 'Removing the Gas Burner Assembly'. Check the 'Home Repair Topics Menu' at the top of the page, if this is not your problem.
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