harbor freight 21 gallon compressor runs constantly
I have a harbor freight 21 gallon compressor and I accidentally popped of the pressure switch.
I thought I got it back together correctly but now the compressor lever to turn it from AUTO to OFF does nothing and the compressor runs no matter what the lever is on.
The pressure switch brand is Lefoo.
Lefoo is a common brand of pressure switch.
If, as I understand it, you somehow disassembled the pressure switch and you cannot reassembled it (no shame there, I couldn't either), you can get an exact replacement many places on line.
When the compressor is running, does the tank pressure continue to rise to the point that the PRV releases? That being the case, get the pressure switch changed sooner rather than later, as your air compressor is in a dangerous configuration.
Comment here with any more info.