Troubleshooting - AEC GPWC70 Operating Instructions Manual

CONDITION
Power is normal, no error
code is displayed, but
machine does not run.
Error code displays '00',
but compressor does not
run.
Power fuse burnt out
Phase Reversed of power
cable
(Error code display '01')
Anti-freezing
(Error code display '02')
Insufficient refrigerant
(Error code display '03'
or '04')
Insufficient Radiation
(Error code display '05'
or '06')
Chilled water pump over-
loaded
(Error code display '07')
Cooling fan motor over-
loaded
(Error code display '08')
FAULT FINDING HINTS
STATUS
1.Fuse burnt out.
2.Microprocessor board
faulty.
1. PC1 board on control
Panel faulty.
2.Protection switch faulty.
1. Power cable grounded or
Short circuit.
2. Compressor, pump or heat
dissipation motor damaged.
Reverse running of circulation
pump.
1. Chiller frozen.
2. Anti-freeze switch tripped.
3. Anti-freeze switch faulty.
4. Water tank is out of water.
5. Pump damaged or reverse
running.
1. Insufficient refrigerant, low-
pressure switch tripped.
2. Chiller frozen, or pump
damaged.
3.Water by-pass not open,
circulating water too little.
4.Y strainer jammed (On
models without water tank)
1. High temperature switch
tripped.
2.filter screen jammed
1.Abnormal voltage. Lack of
phase running.
2.Coil burnt out or bearing
damaged on the motor or
pump.
3.Poor terminal connection or
loose power wires/relays.
4.Relay overload (current is
Set too high)
TROUBLE SHOOTING
1.Replace the fuse.
2.Replace PC board or set AMS switch
1. Replace PC1 board or set AMS switch
to manual position.
2. Make correction according to
Appendix 5.
1. Replace.
2.Repair or replace.
Inverse any of two live wires.
1. Open by-pass valve.
2. Raise high temperature. On control
switch or low anti-freeze temperature.
Anti-freeze temperature should not
be lower than 3℃ (except for special
models)
3. Replace.
4. Check water condition in water tank.
5. Make sure pump is normal.
1. Add refrigerant. (See Appendix 2)
2. Check if expansion tank holds water.
Make sure the circulation pump is
running.
3. Open water by-pass valve.
4.Clean Y strainer.
1. See Appendix 1
2.Clean filter.
1. Three phase power source dropped
unstable voltage or lack of phase.
2. Replace bearing or motor.
3. Tighten or replace.
4.Properly adjust overload current.