Display "Maintenance - Viessmann VITOLIGNO 300-P Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
3. Top up with water until the filling pres-
sure of the cooled system is min.
1.0 bar and 0.1 to 0.2 bar higher than
the pre-charge pressure of the
expansion vessel.

Display "Maintenance"

After the limits specified via coding
addresses "21" to "24" have been
reached, the display shows "Mainte-
nance" and the red fault indicator
flashes.
Note
Set code "24:1" and then code "24:0" if a
service is carried out before "Mainte-
nance" is displayed. The selected main-
tenance parameters for hours run and
time intervals restart at 0.
Scanning and acknowledging mainte-
nance messages
Press the following keys:
1. d to display the message, subject
to code (see above):
■ "Burner"
■ "Interval"
■ "Fuel"
2. d for "Acknowledge".
3. With "Acknowledge?" "Yes" to con-
firm.
Note
If the service is not carried out, a new
"Maintenance" display will be shown
on Monday.
52
(cont.)
Permiss. operating pressure: 3 bar
Calling up acknowledged mainte-
nance messages
Press the following keys:
1. MENU.
2. |/~ for "Maintenance mes-
sages".
3. d to confirm.
The maintenance due will be
shown.
After maintenance has been carried
out
1. Reset code "24:1" to "24:0".
or
In the maintenance message menu,
select "Reset" and confirm with d.
2. Note
If coding address "24" is not reset, the
"Maintenance" message will be
shown again on Monday.