Viessmann VITODENS 333-F WS3A Service Instructions Manual page 39

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Further details regarding the individual steps
3. d
The service display will be
cleared (for a weather-
compensated control unit:
"Acknowledge: Yes",
reconfirm with d).
The red fault display con-
tinues to flash.
After a service has been carried out
1. Reset code "24:1" to "24:0".
The red fault indicator extin-
guishes.
Note
A new maintenance message will
be displayed 7 days later, if coding
address "24" is not reset.
Commissioning, inspection, maintenance
(cont.)
Note
An acknowledged service message
can be redisplayed by pressing d
(approx. 3 s).
2. Reset the burner operating hours,
burner starts and consumption if
required
Press the following keys:
c
Scanning is active (see
page 68).
a/b
for the selected value.
e
the selected value will be
set to "0".
a/b
for further scans.
d
Scanning is completed.
39

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