Supplied By www.heating spares.co Tel. 0161 620 6677
RECTIFYING FAULTS
8 716 115 748 (2009/09)
35
b1
and fault indicator LED are flashing
Code plug not detected.
Check
Action
1.
B
Select in the second service level
the service function
8.b
(Code
plug).
B
Compare number displayed with
that shown in Appendix (only
digits no. 7 up to 10 of order no.).
No number or incorrect number
displayed.
B
Exit the service function.
yes:
go to 2
no:
go to 3
2.
Code plug loose, incorrect or
defective.
B
Switch OFF the appliance.
B
Fit code plug (correctly), making sure code number
is correct (see Appendix).
B
Switch ON the appliance.
b1? go to 3
3.
The PCB is damaged.
B
Make a note of the altered service function settings
(see table 6 on page 18) in order to keep the
altered values.
B
Switch OFF the appliance.
B
Disconnect the boiler power connection.
B
Change PCB control board.
B
Reconnect the appliance power connection.
B
Switch ON the appliance.
B
Restore service settings previously noted down.
Tab. 18 b1 Error codes