Hot Water Heater Thermocouple Test

So the next question how to test a thermocouple with a multimeter.

Hot water heater thermocouple test.

It also is good for water heater thermocouple testing. Pilot light keeps going out. If the pilot light doesn t stay lit check the gas water heater thermocouple by keeping the pilot button depressed. How to test a thermocouple for a water heater everyone who has owned a gas heater including furnaces or water heaters will know that from to time you have to light the pilot light unless you have the electronic ignition that automatically lights the pilot light.

That will help with a furnace thermocouple test. It is comprised of two different types of metal which react differently to heat and expand at different rates signaling to the water heater when to turn on or off. How do i install a new thermocouple. You ask a friend and the friend tells you the thermocouple is bad.

Measure the current by using the multimeter device set on millivolts. How to test a thermopile s voltage using a multimeter. If the thermocouple is working you should be able to measure 30 to 40 millivolts of voltage at the connection end of the tube when the pilot flame is on. How to test a thermocouple with a multimeter.

A faulty thermopile may be at fault. The water heater thermocouple is a device that monitors temperatures in the water heater to determine whether it needs to heat up or turn off the heat. Thermocouples designed for residential gas appliances such as fireplaces water heaters and furnaces are made for 30 millivolts. A gas water heater in boise baton rouge buffalo or boston uses a thermocouple that includes a probe attached to a copper tube that screws into a port on the gas valve.

One probe of the meter should be connected to the copper sheath of the thermocouple and the other to the gas valve. Anything under or hovering around the 20 millivolts mark means the thermocouple needs to be replaced. The reading should be between 25 and 30. Sometimes when you try to light the pilot it does not want to stay lit.

You know you have a problem. Acceptable range for most water heat. When the heat hits the hot junction or tip of the.