Where is the sensor on a water heater?
The inlet and outlet temperature sensors work together to ensure the desired set temperature on the water heater is reached accurately. The cold water sensor is located in the water valve and the hot water sensor is clipped on the hot water outlet pipe.
What does sensor failure mean on a hot water heater?
A thermocouple or flame sensor is a device used to control gas flow in gas water heaters. Often a bad thermocouple is the reason why a water heater pilot does not ignite or a burner does not stay lit.
How do you test a water heater temperature sensor?
Testing the temperature sensor Before you get into how to test the temperature sensor, try power cycling the unit. Put the gas control knob to the “off” position, wait a few minutes, and then try to light the pilot as normal. If the unit doesn’t come on and still codes, then you need to take the gas valve apart.
Why is my hot water heater not igniting?
The water heater pilot light is a small flame that ignites the gas burner on your water heater. If the pilot doesn’t relight, if it goes out right after lighting or if it goes out repeatedly, by far the most common cause is a bad thermocouple.
How to repair a temperature sensor on a water heater?
Do what you need to do to disassemble the valve but leave the sensor plugged into the back plate. Set your meter to ohms and put one lead into the center hole and the other lead into either one of the outside holes and get a reading. Write down the resistance reading.
How can I get my hot water heater to come on?
The only way to get the heater to come on is to fix the sensor (not likely) or to somehow “bypass” or override the sensor until I can get it replace tomorrow. I’ve tried removing the sensor and simply connecting the cirucit with a piece of copper, but that simply changes the LED error code to “Flammable Vapor Sensor Reisistance out-of-range”.
How do you reset a hot water heater?
There is one on-off switch, plus a dial to control the water temperature. To reset my controls, I did the following: Flip the switch to ‘off’. Unplug the unit. Turn the temperature dial to ‘low’. Plug in the unit. Flip the switch to ‘on’. Modulate the temperature dial from ‘low’ to ‘very hot’ about 3-5 cycles.
Can a flame sensor be removed from a heater?
There is only one thing you “MAY” be able to attempt this evening. IF the flame sensor has removable leads you can disconnect them and bring the flame sensor out side for say 30 minutes to preferably an hour. Then reattach the leads and power on the heater. Sometimes that will work.