18
The fuses blow or circuit
breaker trips repeatedly.
□
The incorrect fuse type is
being used.
□
Check for the proper fuse.
□
Use a time-delay fuse. Disconnect
other electrical appliances from the
circuit or operate the compressor on
its own branch circuit.
□
The wrong gauge wire or
length of extension cord is
used.
□
Check for the proper gauge wire and
cord length.
□
There is a defective check
valve or unloader.
□
Bring the compressor to a service
center.
Problem
Possible Cause
Solution
The thermal overload protector
cuts out repeatedly.
□
There is low voltage from the
power source.
□
Call an electrician.
□
There is a lack of proper
ventilation, or the room
temperature is too high.
□
Move the compressor to a well-
ventilated area.
□
The wrong gauge wire or
length of extension cord is
being used.
□
Check for proper gauge wire and cord
length.
The air receiver pressure
drops when the compressor
shuts off.
□
The connections (fittings,
tubing, etc.) are loose and
leaking.
□
Check all connections with a soap and
water solution and tighten.
□
The drain valve is loose or
open.
□
Tighten the drain valve.
□
The check valve is leaking.
□
Bring the compressor to a service
center.
There is excessive moisture
in the discharge air.
□
There is excessive water in
the air tank.
□
Drain the tank.
□
The compressor is working
under a high humidity
environment.
□
Move the compressor to an area of
less humidity; use an air line filter.
The compressor continuously
runs.
□
The pressure switch is
defective.
□
Bring the compressor to a service
center.
□
An excessive amount of air is
being used.
□
Decrease the air usage; the
compressor is not large enough for
the tool’s requirement.
The air output is lower than
normal.
□
The inlet valves are broken.
□
Bring the compressor to a service
center.
□
The connections (fittings,
tubing, etc.) are loose and
leaking.
□
Tighten the connections.
Troubleshooting (continued)
