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Rectifying faults
15
4 Rectifying faults
4.1 Indication of faults
Faults are indicated by a letter code. This helps to iden-
tify and eliminate the cause of the fault quickly and reli-
ably.
4.1.1 ... on the boiler
The text display shows the message Fault EA. Please
call service, for example.At the same time, the fault
code appears on the 2-digit display, in this example:
EA.
You can view an explanatory description of the fault
indicated by going to Settings -> Service -> Display
service parameters , in this example: EA: During
operation: Flame not detected.
The fault codes displayed are grouped into four catego-
ries:
• Category 1:
The appliance is disabled until it has been switched
off and then on again.
• Category 2:
The appliance is disabled until the cause of the fault
has been eliminated.
• Category 3:
The appliance continues to operate with limited func-
tion.
• Category 4:
The appliance is disabled and locked ( flashes)
until the cause of the fault has been eliminated and
the appliance unlocked.
4.2 Summary
4.2.1 Appliance faults
i
Unlocking the appliance:
B Press the reset button until the digit
– – appears on the display.
Once the appliance starts up success-
fully, the fault disappears from the text
display.
Appliance faults
Category
system boiler
combi boiler
Page
A1 1 X X 18
A7 3 X X 19
A8 3 X X 20
Ad 3 X X 21
b1 2 X X 22
C1 2 X X 23
d3 2 X X 24
E2 2 X X 25
E9 4 X X 26
EA 4 X X 28
F0 2/4 X X 32
F7 4 X X 33
FA 4 X X 33
FC 3 X X 35
Fd 4 X X 35
Table 2
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