Viessmann VITOTRONIC 200 Service Instructions Manual page 133

Ventilation
(cont.)
Type of message at Message on the heat pump
the ventilation unit control unit
"Note" "0F Ventilation unit"
H
"Warning" "A0 Vent.: check filter(s)"
W
"Fault" "0E Ventilation unit"
S
Message Meaning
code
01 Only Vitovent 300-F:
W
Differential pressure has
02
W
exceeded response value
of one or both differential
pressure switches.
03 Time interval for filter
W
change has expired.
05 Short circuit/lead break,
S
outdoor air temperature
sensor
06 Short circuit/lead break,
S
supply air temperature
sensor
07 Short circuit/lead break,
S
extract air temperature
sensor
08 Only Vitovent 300-F:
S
Short circuit/lead break,
exhaust air temperature
sensor
09 Only Vitovent 300-F:
S
CO signal capture disrup-
2
ted
0A Only Vitovent 300-F:
S
Humidity signal capture
disrupted
0C Only Vitovent 300-F:
―
Air humidity has exceeded
the limit for raising the air
flow rate.
0D Only Vitovent 300-F:
―
CO concentration has ex-
2
ceeded the limit for raising
the air flow rate.
0E "Standard operation"
H
was activated due to an-
other fault, e.g. sensor
fault. Message does not
occur on its own.
Ventilation unit character-
istics
Ventilation unit remains op-
erational, increased electri-
cal power consumption.
Vitovent 200-C: Ventila-
■
tion unit is switched off.
Vitovent 300-F: "Stand-
■
ard operation" is being
activated. The value of
the exhaust air tempera-
ture sensor minus 5 K is
used.
Vitovent 200-C: Ventila-
■
tion unit is switched off.
Vitovent 300-F: "Stand-
■
ard operation" is switch-
ed on.
"Standard operation" is
being activated. The value
of the outdoor air tempera-
ture sensor is used.
Ventilation unit remains op-
erational, no regulation of
the CO concentration.
2
Ventilation unit remains op-
erational, no regulation of
the humidity.
Air flow rate is raised.
"Standard operation" is
■
being activated.
Bypass blocked.
■
Measure
Replace outdoor air and extract air fil-
ters. Reset maintenance display.
Check resistance value (NTC 10 k
of ventilation unit sensor: See installa-
tion and service instructions for the
ventilation unit.
Check CO /humidity sensor.
2
No action required
Measures according to the other mes-
sages
Diagnosis
)
Ω
133