How To Check Thermostat On Gas Hot Water Heater

How to troubleshoot a defective thermostat on an electric water heater.

How to check thermostat on gas hot water heater. Screw the panel back in. This article deals with thermostats on electric water heaters. Place the leads from your multi meter across the terminals at the top of the thermostat pictured. The reading should be between 110 and 120 volts.

It may not be the hot water heaters fault. Touch one meter lead to the top screw and the other lead to the metal body of the water heater. The article gas water heater tank size talked about the size of your tank relative to your household needs. Remove the upper and the lower access panels with a phillips screwdriver.

Under the cover lies. A common complaint for a hot water tank is not enough hot water. Connect the multimeter pin ends on point 1 3 as shown in the picture below. This step is vital because it protects you from electrical shocks.

Steps for checking thermostats. The upper thermostat controls both the upper and lower element. If the opposite thing happens that means your thermostat has defected. Turn the power back on and place your ear to the drum of the heater.

When checking the thermostat in a single. When it goes bad you don t have any hot water at all. The water heater thermostat is part of the gas valve. Fit the insulation covering back on and place back behind the panel.

Check for power to your water heater. If the water is hot enough at appointed temperature the multimeter will point near zero. Check for power through the temperature high limit switch eco. How to test an electric hot water heater thermostat.

Thermostat on gas valve is not working. Pull out the two panels that protect the thermostat. For thermostats on gas hot water heaters you will need to see the article gas water heater thermostats for more information. Repeat the test with the other screw.

If the water temperature is cold then the meter won t show reading. Replace the upper thermostat. Push the red reset button to set it with the water heater. Head to the circuit breaker and turn off the power to the thermostat.

Not sure if this is your problem. The access panels are on the side of the electric hot water.