Troubleshooting
PRESERVE YOUR WARRANTY. Modification to equipment without the
consent of the manufacturer will void the warranty.
Troubleshooting Guide
Compressor and items
powered from it do not start
when the start switch on the
compressor is closed.
Run light is not on.
No electrical power. Check that the power source is
on and the power cord is
connected.
Tripped circuit breaker in the
compressor.
Check the voltage. Reset the
circuit breaker. Consult a
SCAI Service Center if the
problem persists.
Open fuse in the control
circuit.
Check for a short circuit.
Replace the fuse. Consult a
SCAI Service Center if the
problem persists.
Run light comes on for about
one minute, then goes off, but
the compressor does not start.
Defective motor control
circuit.
Consult a SCAI Service Center.
Wrong voltage. Compare the electric service with
system specifications.
Compressor starts but runs
roughly and does not build
significant pressure.
Motor is running in reverse
due to a wrong phase
sequence.
Interchange any two-(2)
incoming power leads (except
ground) at the power cord plug
or at customer’s disconnect
switch. Check that the wiring to
the compressor is correct.
Consult a SCAI Service Center if
the problem persists.
Shipping bolt is engaged
Remove shipping bolt
Compressor starts, but shuts
down after a few minutes of
operation.
Wrong equalization or
operating pressure.
Refer to Specifications and the
section on Charging and
Venting. Leak check the system
if the pressure is low.
Gas equalization solenoid
valve has failed.
Replace the solenoid valve.
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