How To Test Water Heater Element And Thermostat

Remove the Metal Covers. To look for faults you will need to use a screwdriver.

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If the data tag is missing you can identify single element vs dual element by the number of access panels on the water heater.

How to test water heater element and thermostat. Look closely at the base of your water heater tank. Check your heaters power connecting point. You will also need to check the water heater thermostat with digital multimeter tools.

First it allows the upper element to heat the water in the top of the tank. Remove the water heaters access cover panel and insulation from the upper water heater element. Take an analog multimeter and adjust it to the lowest ohms of resistance.

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. A good thermostat should have a reading of 0 ohms. The upper thermostat has two functions.

The thermostats are less likely to be at fault than the elements. Note the reading of your water heater element Set the multimeter dial to the lowest or Rx1k that is resistances times 1000. Adjust the needle to zero and pinch the probes together to standardize the meter.

How to Test the Element Step 1. You can find the voltage written on the end of the heating element. Then it allows power to go to the lower element.

Test the upper water heater thermostat Use a Philips screwdriver to turn the temperature of the upper thermostat to maximum. You can find this information on the data tag on the side of the water heater. Your water heater usually has two elements and two thermostats.

Turn your multimeters ohms dial to 0. There should be one or two metal plate covers on the side of your water heater. Also in dual element water heaters there is a difference in the upper and lower thermostats.

These are panels attached with screws on the tank of the water heater. How To Check Electric Water Heater Elements Thermostats With Power On Off - YouTube. Since testing the heater element involves working with electricity its important to turn.

If you want to test a thermostat on an electric water heater you will also need to check the heating element. Test Water Heater Elements for an Electrical Short IMPORTANT. Turn off the electrical power to your water heater at the main electrical panel.

If the reading is more than zero the thermostat will need to be replaced. How To Test Water Heater Thermostat This case might happen for the defected thermostat. You will see the inscribed wattage and ohms.

Test The Thermostat Using An Analog Or Digital Multimeter The last step of how to check thermostat on water heater is to check the thermostat with a multimeter. You may insert the power pluck and hold a Tester at the heaters connecting point to check if the power is available. 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.

This is not a hard and fast rule though and its best to test. Place the red probe on one and the black probe on the other to test the heating element screws. However they do go bad and testing water heater thermostats is still required.

Check the Heater Element With Your Multimeter Heating functionality is determined by circuit resistance. When shopping for a water heater thermostat you need to know how many elements the water heater has and the voltage. This is important especially as open and grounded heating elements result in inaccurate tests.

Now let us get started with the following steps on how to test a water heater. Do the opposite for the lower thermostat now. How To Check Electric Water Heater Elements Thermostats With Power On Off.

Although most of the cases this scenario occurs for the power supply problems. When this water is hot enough it shuts the upper element off. Use a multimeter to test for continuity between 2 thermostat terminals.

So at first make sure your power cord is okay. Shut off the Power. Turn it to the highest temperature you can see in the thermostat.

To test a water heater thermostat start by turning off power at the breaker then remove cover plates and insulation.

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