Problem testing gas fireplace thermopile voltage


Old 03-11-20, 11:27 AM
Thread Starter
Join Date: Mar 2020
Posts: 1
Received 0 Votes on 0 Posts
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:

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?
Sponsored Links
Old 03-11-20, 06:24 PM
Grady's Avatar
Forum Topic Moderator
Join Date: Jan 2005
Location: Delaware, The First State
Posts: 14,230
Received 22 Votes on 20 Posts
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?
Old 03-11-20, 08:13 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 56,259
Received 731 Votes on 686 Posts
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.
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title: