Troubleshooting; Troubleshooting Using The Display (For Heating Contractors Only) - Bosch FR 120 Installation And Operating Instructions Manual

52 | Troubleshooting

9 Troubleshooting
BUS device faults are indicated.
A heating appliance fault (e.g. EA fault) is
displayed with the relevant information.
B Contact your installer.
9.1

Troubleshooting using the display (for heating contractors only)

9
12
3
24
Fig. 16 Fault display
1 Fault number
2 BUS subscriber which detected the fault
and reported it to the controller
3 Description of fault
4 Code or additional information about fault
Information displayed (
Text
Fault 01
BUS communication fault
Fault 02
Internal fault
6 720 800 817 (2012/02)
15
h
1
2
3
4
21
h
6 720 617 763-17.2O
Items 1, 3 and 4 in Fig. 16)
Code Cause
10
200 Heating appliance no longer
201 Incorrect BUS subscriber
40
41
42
43
100 ISM not responding.
For heating contractors:
B Rectify the fault in accordance
with the details in the heating
appliance documentation.
The current fault is indicated on the controller:
B Identify the BUS subscriber affected by the
current fault. The fault can only be rectified on
the BUS subscriber from which the fault
originates.
IPM does not receive a set value
from the heating controller.
reporting.
connected.
Incorrect module type
detected.
Two identical codes have been
entered at the IPM.
DIP switch on IPM in
intermediate position.
DIP switch position has been
changed since initialisation
phase.
Remedy (by contractor)
Check BUS subscriber, BUS
connection and repair lead
break if necessary.
Identify and replace incorrect
BUS subscriber.
Replace IPM.
Switch system off and correct
coding.
Check BUS connection and
repair lead break if necessary.