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Operation & Maintenance Manual
Table 24
Symptom
Potential cause
Potential solution
Chiller does not work.
Chiller power check
Insufficient refrigerant
Incorrect or inaccurate
chiller configuration
Alarm operated
Active operating mode
Compressor operates for a
long period of time.
Insufficient refrigerant
Compressor or control
contactor error
Air in cold water circulation
pipe
Non-condensed material
within refrigerant circuit
Circuit does not operate at all.
Alarm operated
Active operating mode
Check over-current protector
Check whether fuse is not disconnected
(If there is a fuse)
Power recovery of chiller
Check leakage and add refrigerant
Check device configuration
Check alarm condition. Check
separate alarm troubleshooting
procedure and follow the
troubleshooting direction.
To check the alarm condition
pressure, check the PLC input
channel diagram
Check the oil preheat time and
temperature reach
Check compressor start delay time reach
Check cold water outlet temperature
Check flux
Check capacity control stop device
Check the PLC input channel
diagram and check the alarm
condition input
Check leakage and add refrigerant
Replace contactor
Remove air
Remove and recharge refrigerant
Check alarm condition. Check
separate alarm troubleshooting
procedure and follow the
troubleshooting direction
Check input temperature
Check operation and control