How to Troubleshoot And Fix a Water Heater that is Not Heating
For your safety I also recommend safety glasses and hand gloves. In order to troubleshoot an electric water heater that is not heating, you will need a multimeter, a flathead and a Philips screwdriver. Test if the water heater is being supplied with 240 volts of power, and if so turn off the power and test for continuity across the thermostats, heating elements and reset button using a multimeter. If your electric water heater is not heating water, check if the circuit breaker has tripped or blown a fuse. When that happens, the heating element will stop heating the water. Whenever water temperature in the water heater hits 180 0 F, the reset button trips, cutting off power to the water heater. A reset button is also mounted on the top thermostat.Ī water heater reset button, also known as an emergency cut off (ECO) or high temperature limit switch is a device that cuts of power to the water heater when the water temperature rises past the thermostat setting, and exceeds 180 0 F.Ī reset button that keeps tripping is caused by a shorted heating element, faulty thermostat, loose wiring or it could be faulty itself. Most electric water heaters will have 2 thermostats and 2 heating elements, at the top and bottom halves of the tank. It could also be caused by a tripped circuit breaker or blown fuse, as a result of a power surge. When an electric water heater is not heating water, it is a sign of a bad thermostat, heating element or reset button. Even when you have to replace something, the replacement part will be cheap and easy to replace. A water heater that is not heating water is easy to troubleshoot as I will outline in this post.
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