80
In the event of a fault, red fault indicator
A
flashes.
" "
flashes on the display and
"Fault"
is shown.
Fig. 55
Press
OK
to display the fault code. For an explanation
of the fault code, see the following pages.
For some faults, the type of fault is also displayed in
plain text.
Acknowledging a fault
Follow the instructions on the display.
Note
The fault message is shown on the standard display of
the short 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.
1.
Press
OK
and
å
simultaneously for approx. 4 s.
2. "Fault history"
3. "Display?"
Deleting the fault history
1.
Press
OK
and
å
simultaneously for approx. 4 s.
2. "Fault history"
3. "Delete?"
Fault codes
Displayed fault
code
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 85)
18
Regulates as if the outside
temperature were 0 °C.
Lead break, outside tem-
perature sensor
Check outside temperature sensor
(see page 85)
19
Regulates as if the outside
temperature were 0 °C.
Communication interrup-
tion, outside temperature
sensor RF
Check wireless connection (place
outside temperature sensor RF
close to the wireless base station).
Wireless base station instal-
lation and service instruc-
tions
Replace outside temperature sen-
sor RF.
30
Burner locked out
Short circuit, boiler water
temperature sensor
Check boiler water temperature
sensor (see page 85)
Troubleshooting
Fault display
6136330
Service
