AEC GPWC70 Operating Instructions Manual page 14

Compressor overload
(Error code display '09'
or '10')
Insufficient flow of
chilled water
(Error code display '11')
Water is not cooled in
chilled water tank.
Insufficient refrigerant
cause by high pressure
valve release
Temperature controller
faulty.
After the above troubles have been corrected, the machine can be reset automatically for trouble displays 01,02
and 11. Press the reset key on the control panel for trouble displays 03, 04, 05 and 06. Press the reset key on
the relay for trouble displays 07, 08, 09 and 10.
1. Abnormal voltage, or lack
of phase running.
2. Compressor damage.
3. Overload, or water
temperature too high.
4. Overload current on relay
set too high.
1. Filter screen jammed.
2. Chiller frozen, insufficient
flow through bypass valve.
3. Pump reverse running or
damaged.
4. Flow control switch
damaged.
1. Poor heat dissipation.
2. Insufficient refrigerant.
3. Overload.
4. Temperature switch set too
high or damaged.
5. Compressor vane broken.
6.Refrigerant jammed.
1. High pressure switch damaged.
When refrigerant
exceeds 23kg/cm2, the high
pressure valve releases
safety.
2. High pressure valve damaged.
1. Trouble 'E1' displayed or
Unstable temperature.
2. Controller damaged.
3.LED damaged.
1. Three phase power source voltage
dropped, unstable voltage or lack of phase.
2. Replace.
3. Reduce load.
4.Properly adjust overload current.
1. Clean Y shaped filter screen at
water suction port.
2. Raise temperature. Open water
bypass valve.
3. Change any two load wires or
replace pump.
4.Replace.
1. Poor cooling efficiency. (See
Appendix 1 for correction)
2. Add refrigerant. (See Appendix 2
for correction)
3. Increase capacity of chiller.
4. Reduce temperature or replace
switch.
5. Replace compressor. (Check
according to Appendix 3)
6. Replace the jammed parts, dry filter
or expansion valve. Vacuum treat
then add refrigerant.
1. Repair high/low pressure switch, then
pressure fill with refrigerant.
for
2. Replace high pressure valve.
1. Replace temperature-sensor wire.
2. Set parameter according to
instructions for temperature
controller.
3. Replace temperature control switch.