66
Troubleshooting
6 720 617 763 (2008/09)
9
Troubleshooting
BUS device faults are indicated.
If the controller shows Fault 12, the cylinder tem-
perature is so high that the cylinder HLC has
tripped.
B
Reset the HLC.
If the appliance frequently cuts out in this way,
B
Telephone your approved installer or Cus-
tomer Service for assistance, providing details
of the fault and the appliance.
A fault on the boiler (e.g. Fault EA) is shown on
the controller display together with a corre-
sponding message.
B
Contact your installer.
9.1 Troubleshooting using the display (for installers only)
Fig. 26
Fault display
1
Fault number
2
BUS device which detected the fault and
reported it to the controller
3
Description of fault
4
Code or additional information about fault
The current fault is displayed on the controller:
B
Identify the BUS device affected by the cur-
rent fault. The fault can only be rectified on
the BUS device from which the fault origi-
nates.
For installer:
B
Rectify the fault in accordance
with the details in the boiler doc-
umentation.
9
12
h
15
6 720 613 462-17.1O
21
24
h
3
1
3
2
4
Information displayed (
Æ
Pos. 1, 3 and 4 in fig. 26)
Text
Code
Cause
Remedy (by installer)
Fault 01
BUS communication fault
200
Boiler no longer reporting.
Check BUS device, BUS con-
nection and repair circuit
break if necessary.
201
Incorrect BUS subscriber con-
nected.
Identify and replace incor-
rect BUS device.
Fault 02
Internal fault
42
Code switch on IPM in inter-
mediate position.
Switch system off and cor-
rect coding.
43
Coding switch position has
been changed since initialisa-
tion phase.
100
ISM not responding.
Check BUS connection and
repair circuit break if neces-
sary.
Tab. 23
