The thermocouple on a gas fireplace may eventually become clogged with dirt and soot which can reduce the effectiveness of the thermocouple and may eventually prevent the fireplace from lighting as expected.
Cleaning gas water heater thermocouple.
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.
Unthread the nut to detach the burner supply tube from the gas or control valve.
Place these safely on the ground.
Once you re sure the thermocouple is clean fix it back to the unit.
Remove dust with a lint free cloth.
Before cleaning the thermocouple make sure that you shut off the power supply so that you do not get hurt while cleaning the thermocouple.
Keep the new thermocouple clean so that it continues working properly.
Completing these simple steps will prevent problems and will lengthen the life of your thermocouple.
Be aware you may need to detach a pilot supply tube as well.
Wipe with a lint free cloth.
Cut the fuel supply to the water heater.
This may prevent power from reaching the pilot lights.
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Rub the ends of this piece with an emery cloth sandpaper.
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Now the ends of thermocouple may be corroded.
Cleaning the thermocouple is a pretty simple process but should only be done when the fireplace is turned off and is completely cool.
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If applicable detach the vapor sensor from the tank base.
Of course always ensure that there is no water in the actual tank before you do this if you even have a tank.
You really don t want hot water spilling everywhere causing property damage.
Your water should heat up within a little while.
Water heater thermocouple cleaning in 5 steps shut the gas inlet valve safety first.
Disconnect any wires from the valve and unthread the nut to release the thermocouple if required by your model.
This is always the first step when working on a water heater.
Turn the power on to the hot water heater.
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 you ever see residue on the ends of it remove it with an emery cloth.