You cannot inspect a thermostat with the power turned off.
Troubleshooting thermostat electric water heater.
Begin by turning the breaker inside the breaker panel of water heater off.
A thermostat continuity test.
The water heater may not heat the water at all it may heat mildly or it may heat too much.
Next remove the screws and open the panel.
A water heater repair will be unnecessary if there s another reason why.
Check the heat setting on both.
Test the wires to confirm the power is off using a non contact voltage tester.
When you check different components of an electric water heater you do so after turning off the power.
Turn off the power to the water heater in the service panel.
Remember a few things before you try to troubleshoot a thermostat.
How to troubleshoot the water heater electric thermostats preparing for a water heater thermostat test.
Remove the access panel insulation and plastic safety guard from each heating element on the water heater.