TROUBLESHOOTING
PROBLEM CAUSE REMEDY
On/Off switch in OFF position
Move switch to ON position
Power cord not plugged in
Plug power cord in
Compressor won't start
Power receptacle breaker tripped or
fuse blown
Reset breaker or replace fuse.
Drain cock open or loose
Close or tighten
Safety relief valve leaks
Replace
Open or broken unloader valve
Replace
Dirty or plugged air filter
Clean or replace as necessary
Low pressure
Air fitting on hose stuck open
Repair or replace
Improper oil viscosity
Drain and replace oil
Too much oil in crankcase
Drain oil to proper level
Compressor overheated
Air pressure regulated too high
Restricted air filter
Clean or replace air filter
Oil in discharge
Worn piston rings
Replace piston rings
Clogged inlet filter
Clean or replace as necessary
Dirty compressor, head, cylinder, or
intercooler
Clean with compressed air
Operating pressure too high
Reduce pressure
Low oil level, or wrong oil used
Drain and replace oil
Compressor overheats
Air tool or attachment air
consumption exceeds compressor
output - compressor run cycle too
long
Reduce air consumption
requirements
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