A burnt-out element is a common cause of water heater woes. Fold the insulation outward and away from the heater element. Make sure the replacement element has the correct voltage and wattage rating for your water heater. The unit is 14 years old but has never seemed to have a problem until now. I am replacing fuses on my water heater daily, I noticed that the part of the fuse that is screwed in to panel is a light brown. Looking at your water heater, you may see two different thermostats. if the tube fell off, don’t worry it wont hurt anything – leave it in the tank but you must remove the metal fitting at the top. Proceed to removing the old heating element if the test has shown that the element is faulty. Close the drain valve on the water heater. If there is no voltage at the element, test the lower thermostat for power. Turn the power to the water heater back on. Typically the lowest temperature setting on a water heater is about 80-90 degrees. Unplug the power cord to the water heater and remove the front cover. This will expose the screw terminals where the circuit wires are connected to the heating element. Bob Formisano is a licensed architect and builder with 30 years of experience in the industry. Remove the cover plates on the water heater elements by loosening the screws. Detach the insulation. A constant supply of lukewarm water indicates a defective upper heating element, while a short supply of fully hot water indicates a defective lower heating element. This indicates that the heating element is faulty and needs replacement. Place one of the multimeter probes on the top contact screw and the other probe on the metal casing of the water tank. This is very important because the heating elements operate off a thermostat, and hot water in the tank will affect electrical flow to the heating elements. Buy a replacement electric water heater element: This is a great time to take your old heating element for a ride - to the hardware store to buy a replacement water heater element of the same voltage, wattage, and length. You can often tell if a water heater element … When an upper heating element or thermostat fails, the entire water heater stops producing hot water. any suggestions ? Replacing a thermostat on an electric water heater is much simpler that on a gas water heater, and you can make the repair without having to drain the tank. The thermostat might quit working along with the element. Insert the gasket over the threads of a screw in element, or around the base of a flange element. Make a simple diagram of how the wires are connected to the diagram. There is a plastic supply feed tube that goes from the inlet to the bottom of the tank. Step 1: Shut OFF electric power to water heater. Titan Electric Tankless Water Heater In-Depth Review For 2021, Ariston Water Heater GL 4 In Depth Review For 2021, Best Mixing Valve: Important Piece Of Plumbing, Testing the Thermostats on a Dual Element Water Heater, Electric Water Heater Thermostat Replacement, How to Reset a Water Heater (and Why You’d Need to). Set the cover plates aside. Loosen the screws holding the wires to each of the two terminal screws and disconnect the circuit wires. Remove the cover and insulation to have access to the thermostat. If you want to test a thermostat on an electric water heater, you will also need to check the heating element. While you’re in there, might as well replace them all, given the duty cycles the current thermostat is undergoing until a fuse blows. Some manufacturers sell heating elements in repair kits that include both heating elements, as well as the thermostats. Make any thermostat adjustments that are necessary. Make sure the gas is connected and the pilot light is lit. Thermostats are held in place by a special bracket that holds it firmly against the tank, allowing the thermostat to sense the internal water temperature. Tighten a screw-in type heating element by threading it clockwise into the tank opening with a socket wrench until secure. It involves three different stages: testing the heating element, removing the old heating element, and installing a new replacement. Open the drain valve and drain water from the water heater tank. Always disconnect the power or shut off the breaker before doing any work on a water heater. Insulate the hot water pipes. Replace each thermostat by sliding it evenly downward into the holding bracket until it locks in place. The upper thermostat is the primary one that contains the high limit switch and the lower thermostat is used to detect the change in the temperature of the water . When a lower heating element or thermostat fails, the top thermostat and element will continue to heat water in the upper half of the tank, but you will notice the hot water … I have a GAS water heater. Remove a flange-type heating element by removing the four screws holding the element in place. Remove the gasket that seals the heating element to the water heater tank. You can pick up a good inexpensive multimeter online or any local hardware store. Introducing "One Thing": A New Video Series. If there is power, test the lower thermostat. When a hot water tap is opened somewhere in the house, hot water flows up out of the top of the tank, and new cold water flows into the bottom of the tank, where the lower heating element begins to heat it.Â. This will purge the lines of any excess air and sediment. If the thermostat on a gas water heater goes bad, you will have to replace the gas control valve component. Insulate the hot water … Odds are it will be very short or non existent. Repeat for the other side. One on the top and the bottom. Remove the gasket. If no power, this thermostat is bad and needs to be replaced. Some repair kits come with a socket that fits the heating element. Water heater thermostat replacement procedure applies to either the lower or upper element. Since most electric water heaters use both an upper and lower element, the process outline below is for them. The old bracket can be pried upward to remove it and the new one can be placed flat against the tank and slid downward until it lock into place. These thermostats control two separate heating elements. Replace this inexpensive tube and you will have hot water again!. Save my name, email, and website in this browser for the next time I comment. Clean the area surrounding where the gasket fastens to the tank, using a rag. Probably something you’ll never have to worry about in your area. Home » Maintenance » How To Replace A Water Heater Thermostat. Done. Before replacing, make sure that the electrical power to the unit and breaker is turned OFF. The upper element heats the upper … Gas Water Heater. On most gas water heaters, the gas control valve, which includes both a thermostat and a heat limiting device, are located on the outside of the unit, near the bottom. This is important, especially as open and grounded heating elements result in inaccurate tests. is preset and the only adjustment is high temp. When you have confirmed that the power is off, loosen the screws holding the wires to each of the two terminal screws and disconnect the circuit wires. Turn off power to the electric water heater at the main power panel by turning off the circuit breaker or fuse that controls power to the heater. Set a multimeter to measure voltage in the 100- to 1,000-volt range, and place the one probe on each wire terminal on the heater element. Replace the wiring exactly as it was removed. Disconnect the cold water line and lift the tube out. Let the water heat up for several hours, then test the temperature of the water. Disconnect the wires from the … Symptoms of a Bad Element Turn On Power and Test Turn on the power by switching on the water heater's circuit breaker. Turn off the electrical power to the water heater at the circuit panel. The cold feed water is suppose to go to the bottom of the tank where it will get warmed by the flames or heating elements. With mounting screws and gasket removed, extract the heating element from the water heater tank. Turn on the power by switching on the water heater's circuit breaker. Replace the thermostat cover, then tuck insulation back in place and reattach the heating element cover plate onto the water heater tank. Most electric hot water tanks have two elements and two thermostats. I have no leaks or indication of rust. Remove the access cover panel and insulation covering the heating element terminal block. Restore power and allow the water heater to work for one hour before testing the hot water.
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