I couldn't get the pilot light to stay lit after releasing the red button. You need to slowly remove the cover plate. Turn off the lever handle gas valve to the water heater and turn the knob on the top of the temperature control valve to “Off.” Use open-end wrenches to unscrew the nuts that connect the burner gas line, the pilot gas line and the thermocouple. If the flame sputters or blows out, the vent pipe needs repairs, or the vent cap could be blocked by debris or a bird’s nest. If that does not solve the problem, then the whole valve needs to be replaced. Realistically, you have just disabled the thermocouple, but you can also reach in and unclip it from its holding bracket where it meets the pilot light. You may find a small screw on the valve that regulates the size of the pilot flame. Vacuum the inside of the combustion chamber, paying particularly close attention to the bottom of the chamber. It is used to detect whether the pilot light of the furnace is lit or not. TanklessWaterHeaterExpress is reader-supported. A thermocouple is basically a safety device on the heater. You can follow the steps mentioned below to know more. Let’s begin with this detailed article on how to clean thermocouple on water heater. © Copyright 2020 Hearst Communications, Inc. Its a water heater... And boo you need to buy the whole kit door and all. These are used in high-temperature applications. Even though this procedure is very simple, it is still difficult to do without any precautionary measures. I bought a new control unit at Lowe's that was made for a Whirlpool, but I was told was universal. You know you have a problem. This is present just outside of the combustion chamber to keep it safe. Make sure that you reconnect all the gas valves to let it ignite properly. [Top 7 Brands Compared]. She attended Tarrant County College and studied English composition. I assume you have a leak in the water heater and you've turned off the water at the main. Locate the other end of the thermocouple cable, where it connects to the gas valve. Like a water heater or room heater thermocouple, a boiler thermocouple's main function is to shut off the gas valve when the pilot goes out. You lift the protective flame screen off the patio heater, unscrew the nut and pull out the thermocouple. That’s why it is important that the thermocouple should be kept working. When your gas water heater is operating correctly, hold the flame of a lit match near the draft opening. A thermocouple is Disconnect the nut that attaches the thermocouple to the gas control valve with your wrench. If you continue to use this site we will assume that you are happy with it. In such a case, the burner may work fine as it is, but the pilot light may not light up. potential difference is calculated by the wires which touch the device in which Why Won’t my Pilot Light stay Lit on my Fireplace? If you, like many homeowners, use a gas-powered water heater, the thermocouple helps prevent the heater from turning into a danger. 22" thermocouple "snap in" for LB White® pilot model heaters. Gas-based heaters can be dangerous because it can heat up faster and also there may be gas valve leaks. Normally, water heater breakers consist of two separate single-pole switches with a 30 amp rating. Push the small button in the middle of the thermal switch to reset it. The burner assembly connects to these lines inside the combustion chamber. Water Heater Anode Rod Aluminum VS Magnesium! For gas-powered water heaters, the thermocouple serves as a safety device to detect if the pilot light is burning. The sandpaper will be attached to a piece of fabric which makes it easier and flexible to rub on small areas. How to Test a Thermocouple for a Water Heater – Everyone who has owned a gas heater including furnaces or water heaters will know that from to time you have to light the pilot light unless you have the electronic ignition that automatically lights the pilot light. If the Status Light still does not flash, turn the gas control knob OFF, turn the gas supply valve OFF, and click on "More Help" below. Remove the screws holding the manifold assembly door to the side of the water tank. How to Replace a Thermocouple on a Hot Water Heater. The thermocouple is part of the pilot assembly where one end is always in contact with the pilot flame while the other side is connected to the gas control valve. Restart the gas supply to the original position is stored on top of the chamber! Not able to give correct readings slide the entire procedure till you reach to the loss of heat, was... Also happen that the pilot light you will now have to open up the allows! 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