If the button is lit up it means the switch tripped and needs to be reset.
Reset thermal switch gas water heater.
Blocked vents at the top and bottom of the water heater can cause excessive heat buildup inside the chamber and trip.
The first thing you should check is the water heater s reset switch which is usually a red button on the upper thermostat of an electric water heater you will need to remove the small panel to access it.
The hot water heater reset is actually a high limit safety thermostat switch that disconnects the power to the water heater if the water exceeds a preset temperature.
Press the small reset button in the center of the thermal switch.
Open a window or door in the room where you keep your water heater to increase the air flow to your appliance.
The reset button is also sometimes referred to as the eco emergency cut off switch or high limit safety thermostat switch.
The thermal reset is usually a red or white switch or button at the center of the control circuit panel.
Depending on which brand and model of water heater you own the control circuit panel may be located on the back or side of the appliance.
The inexpensive water distillers tend to burn out in a year or less but for 5 bucks and about 20 minutes to change the burned out temperature switch with this one.
Your water heater reset button is a safety device that shuts off power to your water heater when the water temperature inside it exceeds 180 degrees fahrenheit.
Research will reveal these things are made for different temperatures so don t just go buy any thermal reset switch this one is set to just over water boiling temp.
If it s tripped you may be able to hear it click.
Turn the water heater s gas valve switch to the off position wait for a few seconds and then flip the switch to the on position to reset the system.
You reset the electric water heater reset button by pushing.
The thermal switch can trip if the water heater is not getting enough air.
Troubleshoot your state water heater to determine why its thermal switch was triggered.
2 locate your water heater s thermal reset switch or button.