Filter
Top Products
46
6.0 TROUBLESHOOTING CHART
TROUBLE
Compressor fails to start.
Compressor shuts down.
NOTE: If a shutdown
occurs, press the Status
button once to activate
the display table.Using
the adjacent up and
down arrows, the values
displayed will be those
immediately preceding
shutdown. Use these
values when
troubleshooting a
problem.
CAUSE &/OR DISPLAY
110/120V control voltage not available,
CONTROL POWER LOSS
STARTER FAULT
EMERGENCY STOP
MAIN (OR FAN) MOTOR OVERLOAD
SENSOR FAILURE XXXX
CHECK INLET CTRL SYS.
Intellisys 24 VAC control voltage not
available
Display panel and power on light does
not illuminate.
HIGH AIREND DISCH TEMP.
LOW UNLOAD SUMP PRESS.
CHECK INLET CTRL SYS.
SENSOR FAILURE XXXX
CHECK MOTOR ROTATION
MAIN MOTOR OVERLOAD
FAN MOTOR OVERLOAD
STARTER FAULT
CHECK SET POINTS
CONTROL POWER LOSS
STEPPER LIMIT SWITCH
REMOTE STOP FAILURE
REMOTE START FAILURE
EMERGENCY STOP
LOW SUMP AIR PRESS
CHECK INLET CONTROL
WHAT TO DO
■ Check fuses. Check transformer and wiring connections.
■ Inspect contactors.
■ Rotate emergency stop button to disengage, and press reset button
twice.
■ Manually reset main or fan motor overload relay, and press reset
button twice.
■ Check for defective sensor, bad sensor connection, or broken
sensor wires.
■ Call factory representative.
■ Check fuses.
■ Check wiring.Verify 24 VAC is within voltage tolerance (± 15%).
■ Ensure that installation area has adequate ventilation.
■ Ensure that cooling fan is operating. If not, reset circuit breaker
inside starter box.
■ Check coolant level. Add if required.
■ Cooler cores dirty. Clean coolers.
■ Check for air leak from tank or blowdown piping.
■ Check for slipping or broken stepper motor coupling.
■ Call factory representative.
■ Check for defective sensor, bad sensor connection, or broken
sensor wires.
■ Interchange any two line connections (L1, L2, L3) at the starter.
■ Check for loose wires.
■ Check supply voltage.
■ Check heater setting.
■ Check for loose wires.
■ Check supply voltage.
■ Check heater setting.
■ Check for dirty cooler cores.
■ Inspect starter connectors.
■ Check for loose wires.
■ Reset to clear.
■ Calibrate sensors.
■ Check all set points.
■ Check fuses. Check transformer and wiring connections.
■ Call factory representative.
■ Check Remote Stop Switch and wiring.
■ Check Remote Start Switch and wiring.
■ Disengage emergency stop button.
■ Press reset button twice.
■ See LOW UNLOAD SUMP PRESS
■ Check for air leaks at inlet valve.
■ Check for slipping or broken stepper motor coupling.