Bosch Climate 7000i Notice D'installation page 69

Fault code Possible Cause
EL 01 Communication error between IDU and ODU
PC 00 Fault at IPM module or IGBT overcurrent protection
PC 01 Over- or undervoltage protection
PC 02 Temperature protection at compressor or overheating protection at IPM module or pressure relief device
PC 03 Low pressure protection
PC 04 Inverter compressor module error
PC 08 Protection against current overload
PC 40 Communication fault between main PCB of outdoor unit and main PCB of compressor drive
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Conflicting operating mode of indoor units; operating mode of indoor units and outdoor unit must correspond.
1) Leak detection not active, if in a system with multi-split air conditioner.
Table 13
Special condition Possible cause
-- Conflicting operating mode of indoor units; operating mode of indoor units and outdoor unit must correspond.
1) Conflicting operating mode of indoor unit. This can occur in a multi split system, when different units operate in different modes. To solve the problem, adjust operating mode
accordingly.
Note: units set to cooling / dry / fan mode will be affected with a mode
conflict as soon as one other unit in the system is set to heating (heating
is the priority system mode).
5.2 Faults not indicated
If faults occur during operation that cannot be eliminated:
▶ Call customer service about the fault, providing details of the device.
Fault
The output of the indoor unit is too low.
Indoor unit does not switch on.
Operating mode changes from Cooling or Heating
to Fan Mode.
A white mist is coming from the indoor unit.
White mist is emerging from the indoor unit and
outdoor unit.
There is noise coming from the indoor unit and
outdoor unit.
Dust is being discharged from the indoor unit or
outdoor unit.
Unpleasant odour during operation.
The fan of the outdoor unit is not running
continuously.
Operation is irregular or unpredictable or the
indoor unit is not responding.
Climate 7000i – 6721873506 (2024/04)
Possible cause
Temperature is set too high or too low.
Air filter is soiled and must be cleaned.
Unfavourable ambient conditions for the indoor unit, e.g. the ventilation openings of the devices are
obstructed, doors/windows in the room are open or the room contains powerful heat sources.
Low-noise operation is activated and prevents the full output from being used.
The indoor unit has a safety mechanism to prevent overloading. It may take 3 minutes, until the
indoor unit can be restarted.
The batteries of the remote control are empty.
The timer is switched on.
The indoor unit changes operating mode to prevent the formation of frost. Once the temperature
increases, the unit will start operating in the previously selected mode again.
The set temperature is reached provisionally, at which point the unit turns off the compressor. The
unit will continue operating when the temperature fluctuates again.
In humid regions, white mist may appear if there is a significant temperature difference between the
indoor air and air-conditioned air.
If heating mode is activated directly after automatic defrosting, this can generate white mist due to
the higher level of humidity.
A swooshing noise may be heard inside the indoor unit if the position of the airflow grille is set back.
A quiet hissing noise is normal during operation. This is caused by the flow of refrigerant.
Creaks and squeaks may be heard, as the metal and plastic parts of the device expand or contract
during heating/cooling.
The outdoor unit also emits a range of other noises during operation which is normal.
Dust may accumulate in the devices if they are shut down for an extended period and not covered.
This can be mitigated by covering the unit during long periods of inactivity.
Unpleasant odours in the air may enter the devices and spread.
There may be mould on the air filter and it must therefore be cleaned.
Variable fan control is used to ensure optimum operation.
The indoor unit may be affected by interference from mobile radio masts or external signal
amplifiers.
▶ Briefly disconnect the indoor unit from the power supply then restart it.
▶ Press the ON/OFF button on the remote control to restart operation.
Troubleshooting
1)
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