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Open Amp Sensor error in GD compressor

Hi

I am working on Gardner Denver Compressor model Electra Saver.
I recently came across an error message Shutdown 'Open Amp Sensor'


This error message popped up within few minutes upon turning on. There is a light on the Compressor motor as seen in above pic, don't know what it means. The motor doesn't get hot.

After pressing Reset & then Constant run, the compressor runs, in most of the cases - all day. But sometimes it stops after running for few hours with above error message.

I tried to look thru the manual but couldn't find above Error message.
Any thoughts what this error is for & how to fix it?

Thanks

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Hi @rav60893

Here's the operating and service manual that may help.

Go to p.68 (78 of 82 pdf) in the manual, to see what to check when there's an Open Amp Sensor message.

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1 Comment:

Thank you so much jayeff for sharing the appropriate manual. I was referring an incorrect one. I followed the Parameter on page 68. The manual says MONITOR SFA (looks like a typo). It's seems it should be 'MOTOR SFA; found on Page 25/82. Will work on it tomorrow .

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Rav will be eternally grateful.
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