Air Compressor: Safety valve keeps popping open

If the safety valve trips at operating pressure or well below the relief set point, replace the safety valve because it's defective. If the tank is over pressurized, the pressure switch isn't shutting off the motor when the air tank fills to the cutout pressure. Move the pressure switch lever to the off position. If the compressor continues to run, replace the pressure switch because the pressure switch is defective.

These repairs may help solve your Air Compressor problem:

Replace the air compressor safety valve

Safety valve

The safety valve pops open to relieve excessive air pressure if the pressure switch fails to shut off the air compressor at the cut-out pressure setting. Replace the safety valve if it leaks or pops open at normal operating pressure.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the air compressor pressure switch

Pressure switch

The pressure switch turns the air compressor pump on and off to regulate tank air pressure. If the compressor isn't cycling on and off to fill the tank, replace the pressure switch.

For manuals, repair guides, and specific part recommendations, enter your model number.