Hot Water Heater Thermocouple Test

One probe of the meter should be connected to the copper sheath of the thermocouple and the other to the gas valve.

Hot water heater thermocouple test.

How to test a thermocouple. A faulty thermopile may be at fault. 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. If the pilot light doesn t stay lit check the gas water heater thermocouple by keeping the pilot button depressed.

The reading should be between 25 and 30. You know you have a problem. Measure the current by using the multimeter device set on millivolts. It also is good for water heater thermocouple testing.

Anything under or hovering around the 20 millivolts mark means the thermocouple needs to be replaced. So the next question how to test a thermocouple with a multimeter. That will help with a furnace thermocouple test. When the heat hits the hot junction or tip of the.

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 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. 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. In this episode of repair and replace vance shows how to replace the thermocouple in a gas water heater.

How to test a thermocouple with a multimeter. Discretion should be used if the reading is between 21 and 25. Thermocouples designed for residential gas appliances such as fireplaces water heaters and furnaces are made for 30 millivolts. How to test a thermopile s voltage using a multimeter.

How do i install a new thermocouple. Acceptable range for most water heat. You ask a friend and the friend tells you the thermocouple is bad.