Troubleshooting
7
Climate 9100i – 6721821569 (2020/11)
▶ Explain to the customer how to use the system, referring to the
operation manual.
▶ Advise the customer to carefully read the operation manual.
5Troubleshooting
5.1 Faults with indication
WARNING
Risk to life from electric shock!
Touching live electrical parts can cause an electric shock.
▶ Before working on electrical parts, disconnect all phases of the
power supply (fuse/circuit breaker) and lock the isolator switch to
prevent unintentional reconnection.
A fault on the device can also be indicated by the sequential flashing of
the following lights:
• ON indicator K (green)
• Timer lamp (orange)
• Plasmacluster lamp (blue)
The number of flashing signs specify the number of the fault codes.
For example in case of error 23 – 4 the green lamp flashes 2 times, then
the orange lamp flashes 3 times then the blue lamp flashes 4 times. As
an alternative, the fault code called up via the remote control
operating instructions.
If a fault is present for more than 10 minutes:
▶ Briefly interrupt the power supply and switch the indoor unit back on.
If a fault persists:
▶ Call customer service and provide the fault code and details of the
appliance.
Table 9
5.2 Faults without indication
Table 10
Fault code Possible Cause
00 – 0 Normal Operation
01 – .. Short circuit on the thermistor of the outdoor unit
02 – .. Fault caused by the temperature in the compressor, heat exchanger or IPM module being too high
03 – 0 For protection, the outdoor unit is switched off for a short time.
05 – .. Open electric circuit on the thermistor of the outdoor unit
06 – ..
07 – ..
Overloading from insufficient refrigerant or blocked air inlet/outlet. Fault at IPM module or overcurrent protection of the
outdoor unit main PCB.
09 – .. Fault at thermistor or 4-way valve or insufficient refrigerant.
10 – .. Faulty parameter in the EEPROM of the outdoor unit
11 – .. Fault on fan in outdoor unit
13 – .. Fault on compressor at start or operation
14 – .. Fault at the impulse amplitude modulation
17 – .. Incorrect electrical connection of the device with open electric circuit
18 – .. Incorrect electrical connection of the device with short circuit
19 – .. Fault on fan of the indoor unit
20 – .. Faulty parameter in the EEPROM of the indoor unit
21 – .. Air baffle fitted incorrectly
24 – .. Communication error of the indoor unit with the WLAN
26 – .. Fault on a thermistor of the indoor unit
Error Possible Cause Remedy
The output of the indoor unit is too low. Heat exchanger of outdoor or indoor unit soiled. ▶ Clean heat exchanger of outdoor or indoor
unit.
Lack of refrigerant ▶ Check tightness of pipes, reseal if required.
▶ Refill refrigerant.
Outdoor unit or indoor unit is not working. No power ▶ Check power connection.
▶ Power on the indoor unit.
Fuse has blown. ▶ Check power connection.
▶Replace 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.
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