Troubleshooting - Hyundai HY3100P User Manual

8. TROUBLESHOOTING

PROBLEM
Pressure drop in the tank
The unloader valve leaks when
the compressor is idle
The compressor stopped and
won't restart
The motor does not start or
starts slowly
The compressor is noisy
The compressor does not
reach maximum pressure
The compressor does not
seem to deliver as much air as
it did when new and/or the
compressor shuts off with a
much shorter time period
The motor pump unit does not
stop when the tank pressure
reaches maximum working
pressure
POSSIBLE CAUSE
Air leaks at the connections
Unloader valve seal is
defective
The thermal protector turned
on because the motor is
overheating
Motor windings have burnt out
Low voltage supply to the
motor
Compressor head gasket or
reed valve is faulty
Compressor head gasket or
reed valve is faulty
The pressure switch needs
adjusting
The tank is full of water due to
condensation
Pressure switch defective or
requires adjusting
13
POSSIBLE SOLUTION
Let the compressor build up
pressure in the tank to
maximum pressure if possible.
Brush soapy water on the air
connections and look for air
bubbles. Tighten leaky
connections. If the problem
persists, contact your service
dealer
Let the air in the air tank flow
out until all the pressure is
released. Then remove the
unloader valve plug and clean
the valve seal. If necessary,
replace the seal and then
reinstall
Check the main voltage
corresponds to the air
compressor specifications. An
extension cord that is under
rated or too long can cause the
motor to overheat.
Allow the motor to cool down
Contact your service dealer
Check that the main voltage
corresponds to the air
compressors specification.
An extension cord that is under
rated or too long can cause
voltage drop. Use a heavy duty
extension cord.
Ensure that the air compressor
is plugged in to a fully
functioning power outlet
Stop the compressor and
contact your service dealer
Stop the compressor and
contact your service dealer
Stop the compressor and
contact your service dealer
Open the drain valve and
release the water from the tank
Stop the compressor and
contact your service dealer