Gas Hot Water Heater Thermostat Test

The upper thermostat is the primary one that contains the high limit switch and the lower thermostat is used to detect the change in the temperature of the water.

Gas hot water heater thermostat test.

However you will need to know how to test a water heater thermostat to find the faulty unit. When an upper heating element or thermostat fails the entire water heater stops producing hot water. Step 1 turn the circuit breaker off to the hvac system. But if the water is hot that becomes later becomes cold then you have a damaged lower thermostat.

Water heater is not getting power. Buy 3 or more 412 66. Step 2 use a flathead screwdriver to remove the thermostat cover plate. Tall 6 year 36 000 btu natural gas tank water heater model xg40t06ec36u1 439 00 439 00.

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. This article deals with thermostats on electric water heaters. How to test water heater thermostat this case might happen for the defected thermostat. Not sure if this is your problem.

Check your heater s power. You know when your shower spits ice cubes instead of hot water that it s time to replace the thermostat for your water heater. Set your store to see local availability add to cart. How to test and replace a water heater thermostat.

If you do not have a volt ohm meter you need to know how to bypass a thermostat to test it. 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. I think we can all agree that waking up to take a shower in the middle of winter only to find out that all the water is cold is not the best thing to happen to anyone. Other than this the thermostat controls the current flowing from one thermostat to another thermostat or from the thermostat to the heater.

There will be a slot to place the blade of the screwdriver between the faceplate and the main body of the thermostat. Turn the upper thermostat to it s highest temperature and if checking a dual element heater the lower thermostat to it s lowest setting. When it goes bad you don t have any hot water at all. Although most of the cases this scenario occurs for the power supply problems.

For thermostats on gas hot water heaters you will need to see the article gas water heater thermostats for more information. The upper thermostat controls both the upper and lower element. If you turn the hot water tap and cold water runs out then the upper thermostat is damaged. So at first make sure your power cord is okay.

Alternatively water is not heating at all. 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.