Bosch Climate 5000 L - Page 12

Troubleshooting
57
Climate 5000L • Climate 5000iL – 6721841494 (2022/05)
Table 15 Fault codes of type 4CC indoor unit
Outdoor Unit
Table 16 Outdoor unit fault codes
Temperature sensor T3 (pipe temperature
sensor) switched off or short-circuited
OFF 5
Temperature sensor T4 (outside temperature)
switched off or short-circuited
OFF 5
Temperature sensor TP (compressor discharge
temperature protection) switched off or short-
circuited
OFF 5
Temperature sensor T1 (room temperature
sensor) switched off or short-circuited
OFF 6
Temperature sensor T2 (pipe temperature
sensor) switched off or short-circuited
OFF 6
Refrigerant leakage detector (with some units) OFF 7
Malfunction of the water level alarm OFF 9
Outdoor unit fan outside the normal range
(with some units)
OFF 12
Outdoor unit is faulty (for old communication
protocol)
OFF 14
Outdoor unit EEPROM fault (with some units) ON 5
IPM malfunction FLASH (at 2Hz) 7
Overvoltage or low-voltage protection FLASH (at 2Hz) 2
Maximum temperature protection of compressor
or high temperature protection of IPM module
FLASH (at 2Hz) 3
High or low-pressure protection
(with some units)
FLASH (at 2Hz) 7
Compressor control system failure of inverter FLASH (at 2Hz) 5
Fault code Content
EC 51 Outdoor unit EEPROM fault
EL 01 Communication fault between outdoor and indoor unit
PC 40 Communication fault between PCI and printed circuit board of outdoor unit
PC 08 Overcurrent protection of outdoor unit
PC 10 Low-voltage protection of outdoor unit AC voltage
PC 11 Overvoltage protector of DC-bus for outdoor unit PCB
PC 12 Overvoltage protector of DC-bus for outdoor unit PCB/341/MCE fault
PC 00 IPM module protection
PC 0F PFC module protection
EC 71 Overvoltage defect in fan motor (DC current) of outdoor unit
EC 72 Missing phase detection of outdoor unit fan motor (direct current)
EC 07 Fan speed of outdoor unit out of control
PC 43 Phase detection protection of outdoor unit compressor
PC 44 Zero speed protection of outdoor unit
PC 45 IR control failure (outdoor unit)
PC 46 Compressor speed out of control
PC 49 Overvoltage defect in compressor
PC 30 High-pressure protection
PC 31 Low-pressure protection
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
Content Timer lamp Operation lamp (flashes)