Viessmann VITOVENT 300, Service Instructions For Contractors

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A Flap open
B Weekdays (1 ≙ Monday, ...)
C xw (Changing settings:
Increasing or reducing a para-
meter value)
D Rotary selector for program selec-
tion
E d (Confirmation prior to input /
Calling up the next parameter,
hold down key
≥ 3 s )
F "Escape" (Cancelling an input)
G Scanning information
H "Reset" (time, date, holiday pro-
gram)
K Fan operating display
L Possible display information
Note
The parameter selection cannot be
reset so must be confirmed fully once
with
d instead.
Fault messages
Faults are captured and displayed by
the appliance. Pressing
d ≥ 3 s
enables the display of fault messages
and filter change requirement to be
reset.
If there is a fault, the display shows
the respective code (see the following
table).
The appliance remains in a fault state
until the fault has been removed. As
soon as this is the case, the appliance
starts automatically; the display will
again show the standard display.
Diagnosis at the remote control
(cont.)
30
Troubleshooting
5692
762
GB