Hot Water Heater Thermocouple Test

Sometimes when you try to light the pilot it does not want to stay lit.

Hot water heater thermocouple test.

Discretion should be used if the reading is between 21 and 25. 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. The reading should be between 25 and 30. 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 to test a thermopile s voltage using a multimeter. That will help with a furnace thermocouple test. In this episode of repair and replace vance shows how to replace the thermocouple in a gas water heater. When the heat hits the hot junction or tip of the.

It also is good for water heater thermocouple testing. How to test a thermocouple. Measure the current by using the multimeter device set on millivolts. You ask a friend and the friend tells you the thermocouple is bad.

Acceptable range for most water heat. One probe of the meter should be connected to the copper sheath of the thermocouple and the other to the gas valve. 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.

A faulty thermopile may be at fault. 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. 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. So the next question how to test a thermocouple with a multimeter.

How to test a thermocouple with a multimeter. You know you have a problem. Thermocouples designed for residential gas appliances such as fireplaces water heaters and furnaces are made for 30 millivolts.