Viessmann VITOTRONIC 300 GW2, Инструкция по установке и обслуживанию

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Scanning service information
72
Overview of service levels
Function Button combination To exit Page
Temperatures, boiler coding cards
and scans Press
9
and
rw
simultaneously
for approx. 2 seconds
Press “OK”
73
Relay test Press
9
and “OK” simultaneously
for approx. 2 seconds
Press “OK” 68
Participant check (in conjunction
with LON) Press
w
and “OK” simultaneously
for approx. 2 seconds
Press
w
and “OK” simultaneously
for approx. 1 second
66
Operating status information Press

Press

77
Service scan

(if ”Service” flashing)
Press “OK”
74
Adjustment of display contrast Press “OK” and “+” or
Display darkens
––
“OK” and “-” simultaneously
Display brightens
––
5285
941
-
0
1