65
Calling up acknowledged faults
Hold down
OK
for approx. 4 s.
The 10 most recent faults (including those remedied)
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
å
simultaneously for approx. 4 s.
2.
Select "
ã
". Enable fault history with
OK
.
3.
Select fault messages with / .
Deleting the fault history
While the list is displayed, press
OK
until flashes.
Confirm with
OK
.
Fault codes
Faults without fault display
Fault
Cause of fault
Measure
Burner blocked; 3 is displayed in code 38
(code 2/boiler)
Combustion chamber pressure
limiter has responded or con-
necting cable to the combustion
chamber pressure limiter is bro-
ken.
Check combustion chamber
pressure limiter, connection
hose, burner and flue system;
see page 14
Reset the combustion chamber
pressure limiter.
Fault code dis-
played
System characteristics
Cause
Measures
10
Regulates as if the outside
temperature were 0 °C.
Short circuit, outside tem-
perature sensor
Check outside temperature sensor
(see page 77).
18
Regulates as if the outside
temperature were 0 °C.
Lead break, outside tem-
perature sensor
Check outside temperature sensor
(see page 77).
19
Regulates as if the outside
temperature were 0 °C.
Communication interrup-
tion, wireless outside tem-
perature sensor
Check wireless connection (place
wireless outside temperature sen-
sor close to the wireless base sta-
tion). Forget outside temperature
sensor, then pair again.
Wireless base station instal-
lation and service instruc-
tions
Replace wireless outside tempera-
ture sensor.
20
Regulates without flow tem-
perature sensor (low loss
header)
Short circuit, system flow
temperature sensor
Check the low loss header sensor
28
Regulates without flow tem-
perature sensor (low loss
header)
Lead break, system flow
temperature sensor
Check the low loss header sensor
If no low loss header sensor is
connected, set code 52:0.
30
Burner blocked
Short circuit, boiler water
temperature sensor
Check boiler water temperature
sensor (see page 78)
38
Burner blocked
Lead break, boiler water
temperature sensor
Check boiler water temperature
sensor (see page 78)
40
Mixer is being closed.
Short circuit, flow temper-
ature sensor, heating cir-
cuit 2 (with mixer)
Check flow temperature sensor.
Troubleshooting
Fault display
(cont.)
5792 925 GB
Diagnosis
Summary of Contents for Vitocrossal 100 CI1
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