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 Originally Posted by millertime77
Why? Is that not how you are suppossed to check a flame sensor? Will it ruin the meter like that?
The joke was that it only worked with my meter in the circuit so I could have just left it there.
That would sure puzzle the next tech that liked at it.
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Originally Posted by craig1
The joke was that it only worked with my meter in the circuit so I could have just left it there.
That would sure puzzle the next tech that liked at it.
Lol I take this stuff way too serious man.
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Originally Posted by millertime77
Lol I take this stuff way too serious man.
That's why I added the little whistling emoticon. Showing sarcasm.
A Veteran is a person, who at some point in their life, wrote a blank check payable to the United States of America for payment up to and including their life.
Gene Castagnetti-Director of the National Memorial Cemetery of the Pacific in Hawaii
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I remember back in my 20's I needed a flame sensor, now @61 the only flame I have is on my stove......... 
__________________________________________________ _______________________
Experience is a hard teacher because she gives the test first, the lesson afterwards". - Vernon Law
"Never let success go to your head, and never let failure go to your heart". - Unknown
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Originally Posted by hurtinhvac
I sometimes wonder how many "bad" boards were actually just a corrupted connection that was "fixed" when the new connectios were made to the new board.
X2 I fixed an intermittent issue with a fireplace piezo 2 days ago, after 4 other techs were there, by fully plugging the connector in!
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Originally Posted by millertime77
ran into samething yesterday that through me off right in front of the customer. I make a call for heat and the HSI lights the burners for about 2 to 3 seconds then the gas valve drops out. So presume the flame sensor is dirty, but wanted to check its output, so I put my meter in series with the sensor and wire, which on this furnace goes directly to the board. The micro amp readingon my meter fluctuated from I believe it was .1 to .2, but the thing that was wierd to me was the burners stayed lit this time. So I hooked it back up with out the meter and gas valve drops out. I cleaned the flame sensor up real good, only because my company doesnt have any stocked on my truck or I would have replaced it, and works fine now. That is the way I was taught to check them, and didnt know exactly what my reading was suppossed to be but it seemed low and I was pretty sure the flame sensor was the issue.
I had a similar experience with a Ruud unit. On the 80 percent units you might try reversing the polarity. This has worked for me twice now.
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