Troubleshooting
Climate 5000 L • Climate 5000i U/L – 6721841493 (2022/05)
64
Table 17 Outdoor unit fault codes
wired controller
The wired room controller may display a different fault code to the indoor
unit, although it is referring to the same fault.
Table 18
7.2
Faults not indicated
Table 19
PC 0A
Condenser high-temperature protection
PC 06
Compressor discharge temperature protection
PC 02
Maximum temperature protection of compressor
EC 52
Temperature sensor T3 (pipe temperature sensor) switched off or short-circuited
EC 53
Temperature sensor T4 (outside temperature) switched off or short-circuited
EC 54
Temperature sensor TP (compressor discharge temperature protection) switched off or short-circuited
Fault code
Content
Fault code
Possible cause
EH b3
Communication fault between wired room
controller and indoor unit. Check communication
cable.
Fault
Possible cause
Remedy
The output of the indoor unit is too low.
Heat exchanger of the outdoor or indoor unit
contaminated or partially blocked.
▶ Clean heat exchanger of outdoor or indoor
unit.
Shortage of refrigerant
▶ Check tightness of pipes, reseal if required.
▶ Refill refrigerant.
Outdoor unit or indoor unit is not working.
No current
▶ Check power connection.
▶ Power on the IDU.
Leakage protector or fuse installed in the
device
1)
has blown.
1) A fuse for the overcurrent protection is located on the main PCB. The specification is printed on the main PCB and can also be found in the technical data on page 66. Use
only ex-protected ceramic fuses.
▶ Check power connection.
▶ Check the leckage protection and fuse.
Outdoor unit or indoor unit starts and stops
continuously.
Insufficient refrigerant in the system.
▶ Check tightness of pipes, reseal if required.
▶ Refill refrigerant.
Too much refrigerant in the system.
Remove refrigerant with refrigerant recovery
unit.
Moisture or impurities in the refrigerant circuit.
▶ Evacuate refrigerant circuit.
▶ Fill with new refrigerant.
Voltage fluctuations too high.
▶ Install voltage regulator.
Defective compressor.
▶ Replace compressor.
Содержание CL5000iL CF 53 E
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