How To Change Water Heater Thermostat

Head to your circuit board and turn off the water heaters breaker. Over 85 Million Visitors.

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Once the power is OFF remove the cover for the full access to the thermostat.

How to change water heater thermostat. Use a screwdriver to set the upper thermostat to its highest setting. Ad Warm Water Heater Search Now. Remove the thermostat from its retaining clips and take it out of the compartment.

Locate the breaker inside the panel box labeled water heater or hot water and turn the breaker off. Place a probe on both of them to detect power. For starters the thermostat on a gas unit is integrated into the gas control valve.

If you have a gas water heater replacing the thermostat isnt as straightforward. A Rating w the BBB. Take a photo or make a drawing of the wire connections on the thermostat to make sure that you get them right when installing the new unit.

Ad Warm Water Heater Search Now. Loosen the two screw terminals on the thermostat using a screwdriver. Set the lower thermostat to its lowest setting.

Adjust the dial on the upper thermostat to the minimum setting while you set the other thermostat to the highest level. Gas Water Heater Thermostats. The top thermostat should be a few degrees higher than the bottom.

Before changing the thermostat of an electric water heater. Remove the outside access covers Use a 14 inch nut driver or flathead screwdriver to remove the upper and lower thermostat access panels. Turn the power back on and place your ear to the drum of the heater.

If the thermostat stops working the element either wont come on at all and the water is cold or the element stays on too long and the water is scalding. Replace the old thermostat with an identical new one. If your water heater has two thermostats adjust both the same amount.

Turn the power to the water heater back on. This DIY repair guide explains how to replace the thermostat in an electric water heater. Use the screwdriver and rotate the adjustment dial clockwise to the desired temperature.

Pull each wire from its terminal. Push the red Reset button to set it with the water heater. Make sure there is voltage coming into the water heater by checking the 2 wires above the reset button.

So if the thermostat isnt working properly youd have to replace the whole gas valve. Adjust the temperature of the thermostat to 120ºF. The thermostat turns the heating element on and off to maintain the water temperature.

Rewire your tag leads to the proper screw terminals. Ad Reliable Service On-Time. Bring the cover back and turn the power ON.

Move to the lower thermostat on the heater. Screw the panel back in. Reset the thermal safety of the thermostat if the water still does not heat it may need to be replaced.

Head back to the terminal 1 and red wire of the bottom heating element. Ad Reliable Service On-Time. Over 85 Million Visitors.

Fit the insulation covering back on and place back behind the panel. Test the thermostat if the test result is negative it means the thermostat does not work anymore. Breaking the retaining bracket will require the entire water heater to be replaced.

Before you change the temperature on the water heater thermostat make sure that the electrical supply to the unit is turned OFF. Replace the insulation and reinstall the access panel. Be sure the back of the thermostat is pressing tightly against the tank because that affects the accuracy of the temperature reading.

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