Bosch Climate 5000 Series Service Manual page 73

8.6.11 Temperature protection of compressor discharge (PC 06)
Error Code
Malfunction decision conditions
Supposed causes
Table 42
Troubleshooting:
Temperature protection of
compressor discharge
Check whether the
C C eck whether the Ch
compressor discharge temp. is
compressor discharge temp. is
more than 115°C (239°F)
more than 11 °
N o
Check whether the
connection is corect between
compressor discharge temp.
compressor discharge temp.
sensor and PCB according
sensor and PCB according
to wiring diagrams?
to wiring diagrams?
Ye s
Measure the resistance value
Measure the resistance value
of compressor discharge
of compressor discharge
temp. sensor is within the normal
range according to Appendix 2.
Ye s
Replace outdoor main PCB
Replace outdoor main PCB
N o
Replace high pressure valve assembly
Figure 77
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
PC 06
When the compressor discharge temperature(T5) is more than 115°C for 10 seconds, the compressor
will stop and restart when T5 is less than 90°C.
Improper / Incorrect Wiring
f
System refrigerant leakage
f
Discharge temperature (T5) sensor faulty
f
Outdoor PCB faulty
f
Check if
there is any refrigerant
Ye s
leakage
N o
N o
Correct the wiring connection
Correct the wiring connection
N o Replace the compressor discharge temp. sensor
Replace the compressor discharge temp. sensor
Fix leakage and
Ye s
re-charge the system.
Service Manual
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