Disconnect from the power source.
Test heating element hot water heater.
Touch one probe of the multimeter to each terminal on the lower thermostat.
Wait for the.
If you want to test a thermostat on an electric water heater you will also need to check the heating element.
How to check a heating element in a water heater.
Testing hot water heater elements is an easy project that even a beginner can master in a few minutes.
The element is bad and must be replaced if the needle on the face of the multimeter moves.
Leave the upper thermostat in the lowest setting and test the lower thermostat.
Place the remaining probe against the metal base attached to the element where it enters the water heater.
The lower thermostat has only two terminals.
Take 1 of the wires off of a water heater element.
If it does not have a.
Each of a hot water heater s elements has 2 electrical wires.
Use the screwdriver to set the lower thermostat to the highest setting.
Disconnect the water heater from power source.
Using the multimeter 1.
Hold the multimeter prongs to the.
Turn off the breaker switch to the hot water heater at the breaker box.
Attach a garden hose.
If it has a disconnectable plug unplug it.
Determine which of the two heating elements in your water heater could be the problem by turning on the water at the faucet and feeling.
All the tests that you.
Locate the circuit breaker at the central electric panel that connects your water heater.
This is a very critical step in testing the water element.
It is usually situated in the metal box attached to the wall.
Before you start the process of testing the hot water heater heating element you must switch off the flow of electricity by turning off the breaker inside your main electrical panel.
This is important especially as open and grounded heating elements result in inaccurate tests.
If the heater is an.
The reading on the multimeter should be zero.
Set your multimeter to the lowest setting for ohms of resistance.
To look for faults you will need to use a screwdriver.
You will also need to check the water heater thermostat with digital multimeter tools.
Drain the water from the water heater.
Testing a water heater heating element 1.