My air compressor will not shut off

by James P
(Raleigh, NC)

My air compressor will not shut off even when I flip the shut-off manually. The only way that I can get it to shut-off is to actually unplug it.


I'm thinking that the problem is the pressure switch. Is it the problem?

Comments for My air compressor will not shut off

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Sep 10, 2014
Name of compressor is Craftsman 5.5 HP
by: James P.

The compressor that will not stop until I unplug it is a Craftsman 5.5 HP and 20 gal

Sep 09, 2014
Compressor will not shut off
by: Bill

Hard to tell for sure James, without knowing the make or model of your air compressor.

If the shut off switch doesn't work, and the switch is part of the pressure switch, and you don't want to pull your hair out trying to reassembled a pressure switch that you've taken apart to fix, then the lowest aggravation solution is to acquire a similar pressure switch and replace the old.

Bill

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my air compressor won't shut off just keeps running

by Christopher
(Charlottesville Virginia)

my air compressor keeps running and won't shut off can you tell me next steps to try or maybe I could post some pictures to show you don't know a lot about compressors but I am I do it myself, guy thanks Chris
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Chris, compressor make, model #, what's the pressure in the tank when the compressor keeps running, more info is needed, as a comment here, to help you resolve this compressor issue.

Know that if the problem relates to a specific compressor make and there is a forum for that make on this website, then this posting will be moved to there.

You did not input your email address so when your posting gets moved, you will not be advised and likely won't be able to find it.

Bill

Comments for my air compressor won't shut off just keeps running

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Sep 19, 2014
Won't shut down
by: Bill

See the troubleshooting page about air compressors that don't build pressure.

Still need help? Start a new thread and ensure that you include the make and model of your air compressor, and a couple of photos wouldn't hurt either.

Bill

Sep 18, 2014
air compressor won't shut off
by: Anonymous

builds to 80 pounds and just keeps on running

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Air compressor wouldn't cut off

by ivan raphael
(malaysia)

My air compressor wouldnt cut off even after reach max safety relief valve pressure of 30 bar, instead the air pop out from the safety relief valve.

The SRV (also known as PRV) just been calibrate twice and same thing happen. Can you help me on the problem?
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A bit hard to be specific Ivan, as you don't indicate the make or model of air compressor.

If the air compressor does not shut off at the normal cut out pressure, then typically it indicates that the compressor pressure switch has failed, and instead of cutting power to the compressor motor, allows the motor to continue running, and building pressure, until the PRV lets go.

This is very unsafe. It were my compressor, I would not use it again until I got the pressure switch replaced.

Bill

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