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27
Rectifying faults
Error E9
5.
Is lead disconnected from CH flow
safety temp. limiter?
yes:
B
Power OFF the appliance.
B
Reconnect lead.
B
Turn ON the appliance.
B
Press
, restart the appliance.
E9?
↓
6.
no:
↓
6.
6.
B
Power OFF the appliance.
B
Disconnect lead to CH flow safety
temperature limiter.
B
Measure the CH flow safety tem-
perature limiter for continuity.
Resistance very high?
yes:
B
Change CH flow safety temperature limiter.
B
Connect CH flow safety temperature limiter.
B
Turn ON the appliance.
B
Press
, restart the appliance.
E9?
↓
7.
no:
B
Connect CH flow safety temperature limiter.
B
Turn ON the appliance.
↓
7.
7.
B
Power OFF the appliance.
B
Remove fuse SI 3 from appliance
PCB control board and test for
continuity.
Resistance very high?
yes:
B
Change the fuse.
B
Turn ON the appliance.
B
Press
, restart the appliance.
E9?
↓
8.
no:
B
Remount the fuse.
B
Turn ON the appliance.
↓
8.
8.
The PCB control board is damaged.
B
Make a note of the altered service settings (see
table 1 on page 7
).
B
Power OFF the appliance.
B
Disconnect the boiler electrical connection.
B
Change PCB control board.
B
Reconnect the boiler electrical connection.
B
Turn ON the appliance.
B
Restore service settings previously noted down.
E9
and
flashing.
Safety temperature limiter has tripped.
Check
Action
