E4/E5/F1/F2/F3 (Open Circuit Or Short Circuit Of Temperature Sensor Diagnosis And Solution) - Bosch CLIMATE 5000 Service Manual

5.5.6

E4/E5/F1/F2/F3 (Open circuit or short circuit of temperature sensor diagnosis and solution)

Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure.
Possible defects:
• Wiring mistake
• Faulty sensor
• Faulty PCB
Troubleshooting and repair:
Fig. 73.
CLIMATE 5000 RAC SINGLE SPLIT (R32) – 6720894076 (2019/08)
Check the connection between
temperature sensor and PCB.
Is it properly wired?
YES
Measure the resistance value of the
sensor.
Is it within acceptable parameters?
YES
Replace indoor or outdoor PCB
NO Ensure proper connections.
NO Replace the Sensor.
Troubleshooting
49