46
12. Trouble Shooting
S/N
Fault
description
Possible cause
Troubleshooting
Remark
1
Too high
exhaust
pressure
1. Air or non-condensable gas found
in the system
Discharge and empty, if necessary,
the non-condensable gas
Cooling/
heating
2. High suction pressure
Refer to "High Suction Pressure"
Cooling/
heating
3. Undesirable high-pressure switch Replace the high-pressure switch
Cooling/
heating
4. Dirty or clogged fin of the
condenser
Clean the air-side heat exchanger
Cooling
5. Insufficient air capacity or faulty
fan of the condenser
Check the fan
Cooling
6. High charge of refrigerant
Adjust the charge of refrigerant
Cooling
7. High ambient temperature
Inspect the ambient temperature
Cooling
8. Insufficient water flow
Check the water flow
Heating
9. Water-side heat exchanger scaling
or with foreign matters inside
Clean up the incrustation scale
Heating
10. High outlet temperature of
water-side heat exchanger
Check the water temperature
Heating
2
Low suction
pressure
1. Insufficient refrigerant
Adjust the charge of refrigerant
Cooling/
heating
2. Undesirable low-pressure switch
Replace the low-pressure switch
Cooling/
heating
3. Insufficient water flow
Check the water flow
Cooling
4. Low water inlet temperature at
water side
Check the water temperature
Cooling
5. Water-side heat exchanger scaling
or with foreign matters inside
Clean up the incrustation scale
Cooling
6. Insufficient air capacity
Check the fan
Heating
7. Short circuit found in air circuit
Check the cause of short circuit
and take troubleshooting
Heating
8. Incomplete defrosting
Replace the poor 4-way valve or
defrosting sensor
Heating
3
Too low
exhaust
pressure
1. Lack of refrigerant
Adjust the charge of refrigerant
Cooling/
heating
2. Low suction pressure
Refer to "Low Suction Pressure"
Cooling/
heating
3. Low ambient temperature of
air-side heat exchanger
Check the ambient temperature
Cooling
4. Too low water temperature at
water side
Check the water temperature
Heating
4
High suction
pressure
1. Too high charge of refrigerant
Adjust the charge of refrigerant
Cooling/
heating
2. High water inlet temperature at
water side
Check the water temperature
Cooling
3. High ambient temperature of
air-side heat exchanger
Check the ambient temperature
Heating
Summary of Contents for CA0035EAND
Page 1: ...1 Service Manual AIR COOLED MODULAR CHILLER SYJS 05 2021 B Edition 2021 05 ...
Page 10: ...8 4 Dimension CA0035EAND 6 Unit Base Diagram ...
Page 12: ...10 CA0100EAND CA0130EAND 7 Unit Base Diagram 5 2 8 1 0 5 5 1 1320 0 7 1 2 ...
Page 37: ...35 8 Wiring Diagram ...
Page 38: ...36 ...
Page 39: ...37 ...
Page 40: ...38 ...