Air Compressor Will
        Not Stop Running



The air compressor will not stop running.

Not only is this annoying in that you have to pull the plug to shut it off, but it could be dangerous. If the compressor pressure pressure continues to build and bypasses the normal cut out pressure, the pressure will rise until the PRV cracks open and vents air.

Then, if for some reason the PRV does not release, a dangerous situation will develop very quickly.

It appears as though many folks have had an air compressor that will not stop running. In response I have added this page specifically about this compressor problem because so many questions have been posted about this issue on my ASK page.

I feel this issue deserves to be highlighted on its own page to make it easier for folks to find a solution, even though the topic is addressed in general in the troubleshooting pages of this site.

Please read the questions and the responses at the bottom of this page. I am pretty sure that you will find that your symptoms will be found on other folk's compressors, and as such, will have already been covered. If not, please use the form to add your question about why your air compressor keeps on running.

Let other folks know about what your compressor problem was, and what worked in correcting it, won't you? Of course, only questions and responses to do with run-on air compressors can be added to this forum.

Thanks,

Bill

What to do when your Compressor Will Not Stop Running

First, please read the postings at the bottom of this page. Your issue is probably already responded to repeatedly. If not, tell us about your air compressor problem.

Some of the reasons why your compressor will not stop running are listed below.

Please read the issues and responses others have had when their air compressor will not stop.

Air compressor stops but then it will start again 
Air compressor after it reaches to maximum it stop but then it will start again. Ill already replace the pressure switch but it seems that there is …

US General Compressor Keeps Running 
Hi, I have a US General 7.5 hp 80 gal compressor. It's set @ 150 psi. It was getting to 145 and shutting it's self off. I threw a bit more oil …

Compressor wont reach shut off 
compressor wont reach shut off and stays running safety valve leaking air. Safety valve leaking compressor wont shut off.

Compressor will not stop running - valve pops after reaching 150psi 
My compressor will not stop running and once it gets above 150, the safety value pops and releases the air. Then it will begin filling the tank once again. …

Compressor doesn't stop and the safety valve blows 
The compressor doesn't stop and after a while the safety valve on the exit stage of the pump to the tank blows in intervals like firing a pistol in intervals. …

it will not shut off runs non stop 
when I turn it on it runs non stop it will not build pressured over 45 pounds. what can the problem be Bill

Ceccato compressor won't stop running and no pressure reading 
Hi Bill! I have Ceccato CSA 15/8 model screw type compressor and it won't stop running at cut out pressure, and displays no pressure reading on ES …

Compressor builds up some pressure then just keeps running 
it builds up air pressure to 80 pounds, which is not the preset, but stops building up and just continues to run with no change in pressure. Then when …

Air compressor wont turn off in the auto position 
compressor wont turn off when the switch is in the auto position.It will turn off in the manual position.

Air compressor wont stop running 
The air compressor will run and when it has too much pressure it wont stop. The prv will then open and the air will come out through there but the compressor …

Compressor only builds to 90psi and will not stop running 
compressor only builds to 90 psi and continues to run. there are no air leaks.

My air compressor will not shut off 
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 …

When an air compressor will not shut off... 
Shut off switch sticks, keeps running ___________________ Bill says... Mike, by the shut off, do you mean the lever on the side of the pressure …

my compressor gets to 80 psi and does not stop and does not go higher 
usually went to 90 psi and kicked off. now it does not do that anymore but keeps running. __________________ Bill says... Ben, my first thought …

Compressor not reaching cut out pressure and continuing to run 
I was in the hardware store the other day and saw a small 1.5hp King Canada (model 8449) air compressor for $20.00. I had a look at it and it had a sign …

Air compressor will not shut off 
My compressor will not stop running. It builds up pressure, but keeps on running. I think that it needs a new regulator but I am not sure. …

Air compressor continues to run and builds up pressure but wont shutoff 
I have a Craftsman 175 PSI Air compressor model 919.167780 25-gallon air compressor that continues to run and builds up pressure but will not shut off. …

power craft ta25/180 compressor won't shut off  
Model is power craft ta25/180 will i have to keep turning it off when it reaches 8 bar could it be the presser switch or valve can you help thanks. __________________ …

Italian f I m a air compressor will not shut down and the safety valve kicks in at 8bar constantly blowing phut phut phut 
Italian f I m a air compressor will not shut down and the safety valve kicks in at 8bar constantly blowing phut phut phut. the unit is Italian f I …

ProForce 11 gallon air compressor will not shut off 
The compressor runs and will build up some pressure but never reach it's cut off point. I lost the oil fill cap (or maybe it blew off} and a lot of …

craftsman 1hp 4 gallon oil filled compressor - about 80 p.s.i. and stops 
I have a twin-tank craftsman compressor that wont stop running. It get to about 80 p.s.i. and stops but the motor keeps running. I replaced the pressure …

keep running, dont shut off. why? 
motor continue to run,guage at 200 psi dont stop.over bleed kicks in still run.??? __________________ Utmost, the device that shuts the compressor off …

Why will my air compressor not shut off 
air compressor reaches a certain point and tries to shut off and starts back up.afraid this will blow capacitors. cleaned up unloader valve. could …

compresser won't stop running. 
Do you recommend going back with a presure switch from the manufacture?? ______________________ Bill says... William, your air compressor will not …

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Honda 11 hp/off switch is turned to OFF - still starts on its own 
elec start 11 HP honda turned OFF- then just starts anyways We disconnect wire to on/off switch in order to keep it from intermittently starting …

Compressor will not shut off at preset pressure 
compressor will not stop building pressure. _____________________ Bill says... Jimmy, if what you are saying is that your air compressor starts …

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