6.0 TROUBLESHOOTING CHART

TROUBLE

CAUSE &/OR DISPLAY

WHAT TO DO

 

 

 

Compressor fails to start.

110/120V control voltage not available,

Check fuses. Check transformer and wiring connections.

 

CONTROL POWER LOSS

 

 

 

STARTER FAULT

Inspect contactors.

 

EMERGENCY STOP

Rotate emergency stop button to disengage, and press reset button

 

 

 

twice.

 

MAIN (OR FAN) MOTOR OVERLOAD

Manually reset main or fan motor overload relay, and press reset

 

 

 

button twice.

 

SENSOR FAILURE XXXX

Check for defective sensor, bad sensor connection, or broken

 

 

 

sensor wires.

 

CHECK INLET CTRL SYS.

Call factory representative.

 

Intellisys 24 VAC control voltage not

Check fuses.

 

available

 

 

 

Display panel and power on light does

Check wiring. Verify 24 VAC is within voltage tolerance (± 15%).

 

not illuminate.

 

 

Compressor shuts down.

HIGH AIREND DISCH TEMP.

NOTE: If a shutdown

 

occurs, press the Status

LOW UNLOAD SUMP PRESS.

button once to activate

 

the display table. Using

 

the adjacent up and

CHECK INLET CTRL SYS.

down arrows, the values

 

displayed will be those

SENSOR FAILURE XXXX

immediately preceding

 

shutdown. Use these

 

values when

CHECK MOTOR ROTATION

troubleshooting a problem.

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

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.

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Ingersoll-Rand 100-200 HP/75-160 KW, 125-200 HP/90-160 KW technical manual Troubleshooting Chart