Viessmann C3TB, Инструкции по установке и обслуживанию для подрядчиков

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115
In the event of a fault, the red fault indicator
A
flashes. In the display, " " flashes and "Fault" is
shown.
R
bar
A
Fig. 89
1. OK
2. / for "Auxiliary heating appliance"
3. OK to call up the fault message.
For some faults, the type of fault is also displayed in
plain text.
For an explanation of the fault code, see the following
pages.
Acknowledging a fault
Follow the instructions on the display.
Note
■ The fault message is transferred to the standard
menu.
■ Any fault message facility connected will be switched
off.
■ If an acknowledged fault is not remedied, the fault
message will be redisplayed the following day and
the fault message facility restarted.
Calling up acknowledged faults
In the standard menu, select "Fault" . Current faults
will be listed.
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.
Service menu:
1. Press
OK and
å
simultaneously for approx. 4 s.
2. "Fault history"
3. "Display?"
Delete fault history
Service menu:
1. Press
OK and
å
simultaneously for approx. 4 s.
2. "Fault history"
3. "Delete?"
Fault codes for gas condensing module
Fault code dis-
played System characteristics Cause Measures
0F Control mode Service
"0F" is only displayed in
the fault history. Service the appliance.
Note
After servicing, set code "24:0".
10 Regulates as if the outside
temperature were 0 °C. Short circuit, outside tem-
perature sensor Check outside temperature sensor
(see page 126).
18 Regulates as if the outside
temperature were 0 °C. Lead break, outside tem-
perature sensor Check outside temperature sensor
(see page 126).
19 Regulates as if the outside
temperature were 0 °C. Communication error,
wireless outside tempera-
ture sensor Check wireless connection. Place
the wireless outside temperature
sensor close to the gas condens-
ing module. Forget outside temper-
ature sensor, then pair again. Re-
place if necessary.
Troubleshooting
Fault display on gas condensing module
5775 636 GB
Diagnosis