Service Scans; Service Level Overview - Viessmann Vitodens 333-F Service Instructions Manual

Service level overview

Function
Temperatures, boiler cod-
ing card, brief scans
Relay test
Max. output (heating
mode)
Operating conditions and
sensors
Service scan
Adjusting the display con-
trast
Calling up acknowledged
fault messages
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 for ap-
prox. 2 s simultaneously
Press K and d for ap-
prox. 2 s simultaneously
Press K and F for ap-
prox. 2 s simultaneously
Press c
c (if "Service" flashes)
Press d and asimulta-
multaneously; the display
darkens
Press d and b simulta-
neously; the display be-
comes lighter
Press d for approx. 3 s
Press G and d for ap-
prox. 2 s simultaneously
Press L and d for ap-
prox. 2 s simultaneously
Weather-compensated
control unit:
Press F and E for ap-
prox. 2 s simultaneously
Constant temperature con-
trol unit:
Press O and F for ap-
prox. 2 s simultaneously
Press K and L for ap-
prox. 2 s simultaneously
Press L and G for ap-
prox. 2 s simultaneously

Service scans

Exit Page
Press d
68
Press d
71
Press d
18
Press d
73
Press d
43
– –
– –
76
Press d
77
Press L
42
and d si-
multaneous-
ly
Press F –
and E or
O and F
simulta-
neously for
approx. 1 s,
alternatively
automatic
after 30 min
Press K
46
and L for
approx. 1 s
simulta-
neously
Press L
48
and G for
approx. 1 s
simulta-
neously
67