Test Water Heater Element Thermostat

If you get the reading of 240v on terminal 1 and terminal 3 then the power is on but if you get no readings then the power is off.

Test water heater element thermostat. Turn the water heater circuit breaker off inside the main service panel. You can find the voltage written on the end of the heating element. Now sometimes you use the hot water tap to only discover cold water coming out. When shopping for a water heater thermostat you need to know how many elements the water heater has and the voltage.

You can find this information on the data tag on the side of the water heater. If you want to test a thermostat on an electric water heater you will also need to check the heating element. To look for faults you will need to use a screwdriver. If the opposite thing happens that means your thermostat has defected.

In this case also check the current at the high limit switch. This is important especially as open and grounded heating elements result in inaccurate tests. Pull away any insulation that is. Before you proceed further with the process of testing the heater thermostat take a screwdriver and the multimeter.

Both thermostats control two different heating elements for the heater to function. To look at the faults in the upper thermostat you need to turn off the lower one. If the water is hot enough at appointed temperature the meter won t show reading. The access panels are on the side of.

Start by checking the thermostat terminals for the supply of power. This is when the upper thermostat has a problem. Testing water heater thermostats is important in locating water heater problems. If the water is cold the multimeter will point near zero.

How to test an electric hot water heater thermostat step 1. If the data tag is missing you can identify single element vs dual element by the number of access panels on the water heater. When it goes bad you don t have any hot water at all. Remove the upper and the lower access panels with a phillips screwdriver.

Test the water heater thermostat testing the water heater thermostat involves the checking of the heating element also. Check the power supply of the thermostat. Connect the multimeter pin ends on point 1 2 as shown in the picture below. Common residential dual element water heaters are 240 volts.