QUANTUM
™
HD COMPRESSOR CONTROL PANEL
MAINTENANCE
090.040-M (NOV 2016)
Page 63
SYMPTOM PROBABLE CAUSES and CORRECTIONS
CONTROL PANEL DOES NOT
RESPOND TO REMOTE
CONTROL SIGNALS
Digital I/O Board 2, Inputs 3 through 5 can be used to operate the compressor from a re-
mote location. NOTE: Check the Operating display to verify that the compressor and the
Slide Valve are in REMOTE I/O.
If the Input 3 (MOD 3) does not turn on, check if the LED (D3) is lit when it should be. If it
isn’t, check the fuse (F3) and if the fuse is OK, check the input module (MOD 3).
If the Input 4 (MOD 4) 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).
If the Input 5 (MOD 5) does not turn on, check if the LED (D5) is lit when it should be. If it
isn’t, check the fuse (F5) and if the fuse is OK, check the input module (MOD 5).
MOTOR LOAD
CONTROL(FORCED UNLOAD)
OCCURS AT HIGH MOTOR AMPS
The current transformer is used to convert the AC motor amps to a DC voltage signal for
the microprocessor. If the %FLA reading from the Operating display is incorrect, contact
the Frick
©
Service Department.
PRESSURES ON THE
OPERATING SCREEN DO
NOT APPEAR CORRECT
1st – Check the range and sensor type in the setup of the panel. If this is correct:
2nd – Open transducers that can be isolated from the system and opened to atmosphere,
these would be Suction, Oil and Filter (if present). Set these transducers to 0g pressure or
atmospheric pressure if your readings are in absolute. Close the transducers from atmo-
sphere and reopen to the system/package. After these pressures have settled down, set
the Discharge to match the Oil pressure.
NOTE: Reference the Pressure Transducer Conversion Data Chart.
COMPRESSOR WITH
SLIDE VALVE DOES NOT
AUTOMATICALLY LOAD
OR UNLOAD*
Verify that the Slide Valve Mode [AUTO] has been set and AUTO appears under Slide Valve
Mode on the Home Status screen.
If the problem persists, see the Troubleshooting section SLIDE VALVE DOES NOT LOAD
and/or UNLOAD.
COMPRESSOR THAT STEPS
ON CAPACITY DOES NOT
AUTOMATICALLY LOAD OR
UNLOAD*
Verify that the Capacity Mode [AUTO] has been set and AUTO appears under Capacity
Mode on the Home screen.
If the problem persists, see the Troubleshooting section COMPRESSOR DOES NOT LOAD
and/or UNLOAD.
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