Viessmann VITOLADENS 300-C Service Instructions Manual page 57

Service level overview
Function
Temperatures, boiler cod-
ing card and brief scans
Relay test
Adjusting the air volume
Operating condition
Service scan
Adjusting the display con-
trast
Fault history
Subscriber check (in con-
junction with a LON sys-
tem)
Emissions test function
"S"
Coding level 1
Plain text display
Coding level 2
Numerical display
Key combination
Press K and G simulta-
neously for approx. 2 s.
Press K and d simulta-
neously for approx. 2 s.
Press K and F simulta-
neously for approx. 2 s
Press c
c (if "Service" flashes)
Press d and a simulta-
neously; the display dar-
kens
Press d and b simulta-
neously; the display be-
comes lighter
Press G and d simulta-
neously for approx. 2 s
Press L and d simulta-
neously for approx. 2 s
Press F and E simulta-
neously for approx. 2 s.
Press K and L simulta-
neously for approx. 2 s
Press L and G simulta-
neously for approx. 2 s
Service scans
Exit Page
Press d 58
Press d 60
Press K 17
and F si-
multaneous-
ly
Press c 61
Press d 36
Press d 64
Press L 34
and d si-
multaneous-
ly
Press F
and E si-
multaneous-
ly
Press K 38
and L si-
multaneous-
ly
Press L 41
and G si-
multaneous-
ly
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