FRICK
QUANTUM™ COMPRESSOR CONTROL PANEL S90-010 M
MAINTENANCE Page 37
TROUBLESHOOTING CHART FOR FRICK
QUANTUM™ CONTROL PANEL
(REFER TO WIRING DIAGRAMS)
SYMPTOM PROBABLE CAUSES and CORRECTIONS
DISPLAY IS INOPERATIVE Check for power at the panel. See if any of the diagnostic lamps on the Main
Board are blinking or any lights are blinking on the other boards. If no lights
are blinking, make sure the control power switch is switched on. If there are
still no lights, then check the circuit breaker (2CB). If the breaker is not tripped,
check for power into 2CB. If there is no power, check the external power being
supplied. If power from 2CB, check power supply for input AC and output DC
level.
Shut off power to the panel and first confirm that the display connector is firmly
seated . This is a delicate connection and care should be used to reconnect it.
Confirm that the connectors at both ends of the backlight inverter are properly
connected. Confirm that the display harness (and inverter harness for the
Quantum™ 3) are connected properly on the main board.
Reference Dwg. No. 640D0070 sheet 2.
OIL PUMP DOES NOT START The LED (D3) for Output 3 (MOD 3) of Digital I/O Board #1 should be on when
Manually On is selected for the oil pump mode. If the pump does not start
when the LED is on, check for the proper panel voltage between position 4
and 5 on the P1 DIO connector on Digital I/O board #1. If the proper voltage is
not found, check the fuse (F3) and if the fuse is OK, check the output module
(MOD 3). If the voltage was OK, check for the proper voltage between position
5 on the P1 DIO connector and position 8 on the terminal strip. If voltage is
OK, check for the proper voltage between position 8 and 2 on the terminal
strip. If the voltage is OK, check at the oil pump starter.
The Oil Pump #1 Auxiliary Contact switches voltage to Input 4 (MOD 4) of
Digital I/O Board #1 when the auxiliary contacts are closed. If the input does
not turn on, check if the LED (D4) is lit when it should be. If it isn’t, check the
fuse (F4) and if the fuse is OK, check the input module (MOD 4). Check the
voltage between positions 4 and 6 of the P1 DIO connector.
OIL PUMP IS RUNNING BUT THE
COMPRESSOR DOES NOT START
If shutdown message “Compressor Starting, Low Oil Pressure - Shutdown” is
displayed, refer to the section in the compressor manual on troubleshooting
the oil pump system. For compressor models with a slide valve: Verify that the
Slide Valve has unloaded to or below the “Highest Slide Valve Position to
allow starting the compressor” setpoint. If the slide valve has not unloaded,
troubleshoot the hydraulic system. Compressor will not start until the Slide
Valve is unloaded. Output 1 (MOD 1) of Digital I/O Board #1 controls the motor
starter. If the motor does not start when the LED (D1) is on, check for the
proper panel voltage between position 4 and 1 on the P1 DIO connector on
Digital I/O board #1. If the proper voltage is not found, check the fuse (F1) and
if the fuse is OK, check the output module (MOD 1). If the voltage was OK,
check for the proper voltage between position 1 on the P1 DIO connector and
position 18 on the terminal strip. If voltage is OK, check for the proper voltage
between position 18 and 2 on the terminal strip. If the voltage is OK, check the
interposing relay (By others).
COMPRESSOR AUXILIARY
SHUTDOWN
Output 1 controls the Compressor Start Relay (By others). If the compressor
does not start and the LED (D1) for Output 1 (MOD 1) is on, check for the
proper panel voltage between position 4 and 1 on the P1 DIO connector on
Digital I/O board #1. If the proper voltage is not found, check the fuse (F1) and
if the fuse is OK, check the output module (MOD 1). If the voltage was OK,
check for the proper voltage between position 1 on the P1 DIO connector and
position 18 on the terminal strip. If voltage is OK, check for the proper voltage
between position 18 and 2 on the terminal strip. If the voltage is OK, check the
interposing relay (By others).
The Compressor Starter Auxiliary Contacts turn on Input 2 (MOD 2) of Digital
I/O Board #1 when they are closed. These contacts are located on the
Compressor Starter. If the input does not turn on check if the LED (D2) is lit
when it should be. If it isn’t, check the fuse (F2) and if the fuse is OK, check
the input module (MOD 2). Check the voltage between positions 2 and 4 of the
P1 DIO connector.
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