Function
Key combination
Exit
Page
Temperatures, boiler cod-
ing card and brief scans
Press
K
and
G
simulta-
neously for approx. 2 s.
Press
d
86
Relay test
Press
K
and
d
simulta-
neously for approx. 2 s.
Press
d
88
Max. output (heating
mode)
Press
K
and
F
simulta-
neously for approx. 2 s.
Press
d
35
Operating conditions and
sensors
Press
c
Press
c
89
Service scan
c
(if "Service" flashes)
Press
d
64
Adjusting the display con-
trast
Press
d
and
a
simulta-
multaneously; the display
darkens
–
–
Press
d
and
b
simulta-
neously; the display be-
comes lighter
–
–
Calling up acknowledged
fault messages
Press
d
for approx. 3 s
92
Fault history
Press
G
and
d
simulta-
neously for approx. 2 s
Press
d
92
Subscriber check (in con-
junction with LON sys-
tem)
Press
L
and
d
simulta-
neously for approx. 2 s
Press
L
and
d
si-
multaneous-
ly
59
Emissions test function
"
S
"
Press
F
and
E
simulta-
neously for approx. 2 s.
Press
F
and
E
si-
multaneous-
ly
–
Coding level 1
Plain text display
Press
K
and
L
simulta-
neously for approx. 2 s
Press
K
and
L
si-
multaneous-
ly
66
Coding level 2
Numerical display
Press
L
and
G
simulta-
neously for approx. 2 s
Press
L
and
G
si-
multaneous-
ly
68
Resetting codes to their
delivered condition
Press
L
and
G
simulta-
neously for approx. 2 s;
then
e
–
84
Service level overview
85
Service scans
5592
883
GB
Service
Summary of Contents for VITODENS 343-F WS4A
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