Electric Hot Water Heater Thermostat Test

And when it comes to thermostats the device uses two of them generally.

Electric hot water heater thermostat test.

An electric hot water heater has two thermostats controlling two separate heating elements one in the upper half of the tank one in the lower half. If the thermostats are okay you need to test the water heater elements. Usually when the upper thermostat goes bad you will have no hot water at all while a bad lower thermostat makes itself known when there is only a small amount of hot water before the tap water goes cold. Upper thermostat makes it possible for you to have cold water supply when you turn on the tap of hot water.

One should be sitting on the top of unit 1. If the hot water heater is not working one of the thermostats may be bad. Structure of water heater. If you want to test a thermostat on an electric water heater you will also need to check the heating element.

The electric heater has a total of two thermostats each performing distinct functions. How to test a water heater element with a multimeter. Testing is the only option if you want to determine whether or not one or both of them has failed. To look for faults you will need to use a screwdriver.

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 quickly runs out or is only lukewarm. Electric water heaters have one or two elements and each is controlled by a thermostat. When an upper heating element or thermostat fails the entire water heater stops producing hot water. Electric water heater thermostats are a fairly simple devices that can fail from time to time.

You can test them with the power off using an ohmmeter to measure resistance or with the power on using a voltmeter to measure voltage. How to test water heater thermostat this case might happen for the defected thermostat. This is important especially as open and grounded heating elements result in inaccurate tests. When a water heater no longer produces hot water.

You will also need to check the water heater thermostat with digital multimeter tools. The structure of an electric water heater is pretty simple. Lower thermostat ensures that the hot water keeps coming and it does not turn cold when you turn on the hot water tap. While the other is found right on the bottom.

In this case testing the thermostat is a little bit of a technical task but not hard at all.