Bosch Climate 3000i CL3000iU W 26 E Manual De Instalación página 54

Troubleshooting
▶ Test heating mode for 5 minutes.
▶ Ensure freedom of movement of horizontal louver.
If the room temperature is less than 17 °C, the cooling mode must be
switched on manually. This manual operation is only envisaged for
testing and emergency situations.
▶ Otherwise, always use the remote control.
To switch on the cooling mode manually:
▶ Switch off the indoor unit.
▶ Press the key for the manual cooling mode twice with a thin object
( Fig. 23).
▶ Press the Mode key on the remote control to exit cooling mode when
it has been set manually.
In a system with multi-split air conditioner, manual operation is not
possible.
4.3 Handover to the user
▶ When the system has been set up, hand over the installation manual
to the customer.
Fault code Possible Cause
EC 07 Fan speed of outdoor unit outside the normal range
EC 51 Faulty parameter in the EEPROM of the outdoor unit
EC 52 Temperature sensor error at T3 (condenser coil)
EC 53 Temperature sensor error at T4 (outside temperature)
EC 54 Temperature sensor error at TP (compressor discharge pipe)
EC 56 Temperature sensor error at T2B (outlet of evaporator coil; only multi-split air conditioner)
EH 0A Faulty parameter in the EEPROM of the indoor unit
EH 00
EH 0b Communication error between main PCB of indoor unit and display
EH 02 Fault when detecting the zero-crossing signal
EH 03 Fan speed of indoor unit outside the normal range
EH 60 Temperature sensor error at T1 (room temperature)
EH 61 Temperature sensor error at T2 (centre of evaporator coil)
1)
EL 0C Insufficient or escaping refrigerant or temperature sensor error at T2
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
−− 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 70
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).
54
▶ Explain to the customer how to use the system, referring to the
operation manual.
▶ Advise the customer to carefully read the operation manual.
5 Troubleshooting
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.
If a fault occurs during operation, a fault code appears in the display
(e.g. EH 02).
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.
Climate 3000i – 6721823680 (2023/01)
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