Fault Codes - Viessmann Vitodens 200-W Installation And Service Instructions For Contractors

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
38 X
40
Weath.- System characteris-
comp. tics
X Regulates, as if the
outside temperature
were 0 °C
X Regulates, as if the
outside temperature
were 0 °C
X Regulates, as if the
outside 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
X Burner blocked
X Mixer closes
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
Break in communi-
cations, wireless
outside tempera-
ture sensor
Short circuit, flow
temperature sen-
sor
Lead break, flow
temperature sen-
sor
Short circuit, boiler
water temperature
sensor
Lead break, boiler
water temperature
sensor
Short circuit, flow
temperature sen-
sor, heating circuit
2 (with mixer)
Troubleshooting
flashes.
Measures
Check outside tempera-
ture sensor (see
page 83)
Check outside tempera-
ture sensor (see
page 83)
Check wireless connec-
tion (place wireless out-
side temperature sensor
close to the wireless base
station).
Log off outside tempera-
ture sensor then log on
again.
Wireless base sta-
tion installation and
service instructions
Replace the wireless out-
side temperature sensor.
Check low loss header
sensor (see page 84)
Check low loss header
sensor (see page 84)
If no low loss header sen-
sor is connected, set code
52:0.
Check boiler water tem-
perature sensor (see
page 84)
Check boiler water tem-
perature sensor (see
page 84)
Check flow temperature
sensor (see page 88)
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