General Troubleshooting; Error Display (Indoor Unit) - Bosch CLIMATE 5000 Service Manual

5.2

General Troubleshooting

5.2.1

Error Display (Indoor Unit)

When the indoor unit recognizes one of the errors from the table below,
the operation lamp will flash in a corresponding series, the timer lamp
Operation Timer lamp
lamp flashes
1 time
OFF
2 times
OFF
3 times
OFF
4 times
OFF
5 times
OFF
6 times
OFF
9 times
OFF
7 times
OFF
1 time
ON
2 times
ON
3 times
ON
4 times
ON
5 times
ON
6 times
ON
1 time
FLASH
2 times
FLASH
3 times
FLASH
5 times
FLASH
Table 9.
For other errors:
The display board may show a garbled code or a code which is undefined
by the service manual. Ensure that this code is not a temperature
reading.
Troubleshooting:
Test the unit using the remote control. If the unit does not respond to
the remote controller, replace the PCB of the indoor unit. If the unit
responds, replace the display board.
CLIMATE 5000 RAC SINGLE SPLIT (R32) – 6720894076 (2019/08)
LED Display Error Information
Indoor unit EEPROM parameter error
E0
Indoor / outdoor units communication error
E1
Zero-crossing signal detection error
E2
The indoor fan speed is operating outside of the normal range
E3
Indoor room temperature sensor T1 is in open circuit or has short
E4
circuited
Evaporator coil temperature sensor T2 is in open circuit or has short
E5
circuited
Indoor PCB /Display board communication error
E7
Refrigerant leak detected
EC
Overload current protection
F0
Outdoor ambient temperature sensor T4 open circuit or short circuit
F1
Condenser coil temperature sensor T3 is in open circuit or has short
F2
circuited
Compressor discharge temperature sensor TP open circuit or short
F3
circuit
Outdoor unit EEPROM parameter error
F4
The outdoor fan speed is operating outside of the normal range
F5
IPM malfunction or IGBT over-strong current protection
p0
Over voltage or over low voltage protection
p1
High temperature protection of IPM module
p2
Inverter compressor drive error
p4
may turn on or begin flashing, and an error code will be displayed. These
error codes are described in the following table:
Troubleshooting
Solution
Page 45
Page 46
Page 47
Page 48
Page 50
Page 50
Page 51
Page 51
Page 53
Page 50
Page 50
Page 50
Page 45
Page 48
Page 54
Page 55
Page 56
Page 57
37