Service Scans; Service Level Summary - Viessmann Vitodens 333 Service Instructions Manual

Service level summary

Function
Temperatures, boiler cod-
ing card, brief scans
Relay test
Max. output (heating
mode)
Operating conditions and
sensors
Maintenance scan
Adjusting the display con-
trast
Calling up acknowledged
fault messages
Fault history
User check (in conjunc-
tion with LON system)
Emissions test function
"S"
Coding level 1
Coding level 2
Key combination
K and G simultaneously
for approx. 2 s
K and d simultaneously
for approx. 2 s
K and F simultaneously
for approx. 2 s
Press c
c (if "Maintenance"
flashes)
d and a simultaneously;
the display darkens
d and b simultaneously;
the display becomes light-
er
d for approx. 3 s
G and d simultaneously
for approx. 2 s
L and d simultaneously
for approx. 2 s
Weather–compensated
control unit:
F and E simulta-
neously for approx. 2 s
Constant temperature con-
trol unit:
O and F simulta-
neously for approx. 2 s
K and L simultaneously
for approx. 2 s
L and G simultaneously
for approx. 2 s

Service scans

Exit Page
Press d
62
Press d
66
Press d
15
Press d
67
Press d
38
– –
– –
70
Press d
71
Press L
37
and d si-
multaneous-
ly
F and E –
or O and
F simulta-
neously for
approx. 1 s,
alternatively
will be se-
lected auto-
matically
after 30 min
K and L
39
simulta-
neously for
approx. 1 s
L and G
41
simulta-
neously for
approx. 1 s
61