Kobalt 8 gallon compressor won't power off?

by Dan petrarca
(Newtown square, Pa.)

Kobalt 8 gallon compressor won't power off when it reaches 150 psi


When the tank pressure reaches 150 psi, the unit is supposed to power off. It does not.

Instead, the pressure release valve releases the pressure, and the unit stays on. This happens over and over.

I replaced the pressure switch, but nothing changed.

Any thoughts?

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Jun 06, 2018
Kobalt 8 no turn-off by pressure
by: Doug in s.d.ca

If you've already replaced the pressure switch, and it still doesn't turn off, then either they are sending the wrong part, or the prv is bad.

Are there markings on the switch? Is the pressure actually going over 150, like 160 or so, before the prv lets go?

If the pressure is going high, then all I can tell you is to complain to the part source. What you are getting is either the wrong part, or defective.

Jun 05, 2018
Kobalt 8 gallon compressor won't power off.
by: dcrutch99

My compressor does the exact same thing. I replaced the switch and same problem. I unplugged one of the wires, and yes it powers off.

What now?

Please let me know ASAP. Thank you.

Apr 19, 2018
A thought about your Kobalt not powering off...
by: Doug in s.d.ca.

Unplug it...
Try removing one and then the other wire from the pressure switch. Make sure the wire can't touch anything. Plug it in, turn it "on". Does it run?

Please let us know.

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