30
S/
N
Fault description Possible cause
Troubleshooting
Remarks
8
Fault in flow
switch
1.Air found in the water system
Discharge air via the exhaust valve
Cooling/heatin
g
2.Water-side heat exchanger scaling or with foreign
matters inside
Clean up the incrustation scale
3.Poor switch
Replace the target flow switch
4.Unevenly distributed flow in water pipelines
Adjust the flow in water pipelines via the
shut-off valve
5.Out-of-service water pump
Machine installation must be ganged
6.Insufficient types of water pumps
Check it and try to fix it
9
Fault in
communication
of wired
controller
1.Incorrect unit numbering
Check the unit numbering, and correct it.
Cooling/heatin
g
2.Incorrect connection of communication wires
Check the order of connection of
communication wires
3.Damaged PCB
Replace the PCB
4.Poor wired controller
Replace the wired controller
10
Over-current
fault of
compressor
1.High exhaust pressure and high suction pressure
Refer to “High Exhaust Pressure” and “High
Suction Pressure”
Cooling/heatin
g
2.High or low voltage, single phase or phase
imbalance
Check the power supply
3.Short circuit in motor or terminal
Check the terminal connections
11
Open circuit in
low-pressure
sensor
1.Damaged sensor
Replace the sensor
Cooling/heatin
g
2.Poor connection of sensor
Reconnect the sensor
Summary of Contents for CA0065EANR
Page 8: ...5 1 2 Main components of the unit ...
Page 15: ...12 Installation 3 Diagram of arrangement of multiple chiller units Unit mm ...
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