H8 Troubleshooting - Bosch IDS 2.0 Service Manual

Service Manual

12.3.8 H8 Troubleshooting

LED display output:
Description:
Possible causes:
Table 36
Procedure:
Figure 23
1) See Section 13.2
2) See Appendix 1
Bosch Thermotechnology Corp. | 07.2021
H8
Pressure transducer (PT) fault
 Pressure transducer wiring not secure
 Pressure transducer failed
No
Is the wiring
secure?
Yes
Yes
Did the pressure
transducer fail?1
No
Yes
Did the control
board fail?2
No
Restart system
Secure wiring
Replace pressure
transducer
Replace control board
Bosch IDS 2.0 | 49
Data subject to change