Bosch Climate 5000 Series Service Manual page 52

Service Manual
7.6.7 Indoor PCB / Display board communication error diagnosis and
solution (EH 06)
Error Code
Malfunction decision conditions
Supposed causes
Table 35
Troubleshooting:
Figure 49
5 2 |
EH 06
Indoor PCB does not receive feedback from the display board.

Wiring mistake

Display board faulty

Indoor PCB faulty
Power off, then restart the unit 2 minutes
later
Is it still displaying the error code ?
YES
Check the wirings and connections
Are all the connections
good ?
YES
Replace the indoor main PCB
Does the error still exist ?
Replace the display board
Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
NO The unit functions normally
Ensure a proper connection
NO