Sterlco GP Series 20-60 HP Packaged Chillers - Manual (Page 55)

GP Series Portable Chillers Chapter 6: Troubleshooting 55 of 93
CC = Compressor Critical SC = System Critical PC = Process Critical W = Warning
Alarm Name # Type Possible Cause Solution
Compressor Fault 1 CC
MCP Failure Allow the compressor to cool
down. If the compressor does
not restart, disconnect power
and verify operation of the
MCP internal module. Replace
if necessary.
Compressor module has failed
Discharge Pressure Sensor Failure 2 W
Sensor Failure
Check the wiring connection at
the sensor, and at the controller.
If necessary replace sensor. Electrical connection at
sensor open
Electrical connection at
controller open
Fan Overload 3 CC
Internal fan motor overload
tripped
Allow the fan to cool down. If
the fan does not restart when
called upon by controller,
replace fan motor.
VFD Fault 4 CC
Drive has detected internal
fault
Locate the drive and write
down the fault code shown on
the display of drive. Contact
customer service for assistance.
High Discharge Pressure Fault 5 CC
Dirty air cooled condenser or
inlet filter Clean filter or condenser
Dirty water cooled condenser
or condenser valve failure Clean condenser or verify
operation of condenser valve
Condenser fan overload See Fan Overload Fault
Condenser fan VFD fault See VFD Fault
Ambient air or condenser
water temperature too high Verify supply temperature or air
removal capacity.
Too much refrigerant in
system.
Contact Customer Service for
assistance
Liquid line valves closed.
Verify operation of valve and
wiring on controller
Discharge pressure switch
failure See Discharge Pressure Sensor
Failure
High Discharge Pressure Switch 6 CC
Dirty air cooled condenser or
inlet filter Clean filter or condenser
Dirty water cooled condenser
or condenser valve failure Clean condenser or verify
operation of condenser valve
Condenser fan overload See Fan Overload Fault
Condenser fan VFD fault See VFD Fault
Ambient air or condenser
water temperature too high Verify supply temperature or air
removal capacity.
Too much refrigerant in
system.
Contact Customer Service for
assistance
Liquid line valves closed
Verify operation of valve and
wiring on controller
Discharge pressure switch
failure
See Discharge Pressure Sensor
Failure
High Suction Pressure Fault 7 CC
From Process fluid
temperature too high Verify flow through system.
Make corrections as necessary.