Problem testing gas fireplace thermopile voltage

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Old 03-11-20, 11:27 AM
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Exclamation Problem testing gas fireplace thermopile voltage

My gas fireplace is not turning on. Cleaning the thermopile helped a bit, but the problem is getting worse.

I tried testing the thermopile voltage with a multimeter as explained here:
https://www.youtube.com/watch?v=O6FC1EmJCgI

About a half second half I touch both terminals with the multimeter, there is a little click sound and the pilot flame goes out. I tried this 3 times. The pilot flame can be restarted without problems, but I don't get a voltage reading.

We moved in last year and the fireplace is possibly from the 90s, not sure.

Any thoughts?
 
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Old 03-11-20, 06:24 PM
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Is there an external thermostat? If so, you may need to disconnect it to take your voltage reading. Are you sure the meter is set for DC volts not AC?
 
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Old 03-11-20, 08:13 PM
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You're using the wrong setting on your meter. It sounds like you may have one of the probes in the current (amps) port. As Grady mentioned..... you should be using the DC scale. You are measuring a voltage well under 1 volt.

You could post the model of the meter for help with that if needed.
Don't bother cleaning a thermopile or thermocouple. If they are suspect... they get changed.
 
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