Fault Codes - Viessmann Vitodens 200-W Series Installation And Service Instructions Manual

Fault display
(cont.)
The 10 most recent faults (including resolved ones)
are saved and can be called up.
Calling up fault codes from the fault memory (fault
history)
The 10 most recent faults (including those remedied)
are saved and can be called up.
Faults are sorted by date.
1. Press OK and simultaneously for approx. 4 s.
å

Fault codes

Displayed Const.
fault code
10 X
18 X
19 X
20 X
28 X
30 X
Weath.- System characteris-
comp. tics
X Controls as if the out-
side temperature
were 0 °C
X Controls as if the out-
side temperature
were 0 °C
X Controls as if the out-
side temperature
were 0 °C
X Regulates without
flow temperature sen-
sor (low loss header)
X Regulates without
flow temperature sen-
sor (low loss header)
X Burner blocked
2. Select " " and activate fault history with OK.
ã
3. Select fault messages with / .
Deleting fault history
While the list is displayed, press OK until
Confirm with OK.
Cause
Short circuit, out-
side temperature
sensor
Lead break, out-
side temperature
sensor
Communication in-
terruption, outside
temperature sen-
sor RF
(outside tempera-
ture sensor RF, KM
BUS to wireless
base station, wire-
less base station or
wireless repeater
faulty or defective)
Short circuit, sys-
tem flow tempera-
ture sensor
Lead break, sys-
tem flow tempera-
ture sensor
Short circuit, boiler
water temperature
sensor
Troubleshooting
flashes.
Measures
Check outside tempera-
ture sensor (see
page 86)
Check outside tempera-
ture sensor (see
page 86)
Check wireless connec-
tion (place outside tem-
perature sensor RF and
wireless repeater close to
the boiler).
Check KM BUS to wire-
less base station.
Log off outside tempera-
ture sensor and wireless
repeater, then log them
on again.
Wireless base sta-
tion
Replace outside tempera-
ture sensor RF.
Replace wireless repeat-
er.
Replace wireless base
station.
Check low loss header
sensor (see page 87)
Check low loss header
sensor (see page 87)
If no low loss header sen-
sor is connected, set code
52:0.
Check boiler water tem-
perature sensors (see
page 87)
77