25
The display signals faults with
"Fault"
and by lighting up the red fault indicator.
Checking and acknowledging faults
Note
If an acknowledged fault is not remedied,
the fault message will be re-displayed
the following day.
Press the following keys:
1.
d
to troubleshoot.
2.
|
/
~
to select the fault message to
be acknowledged, if several
faults are present.
3.
d
for
"Acknowledge"
.
4.
|
/
~
for
"Yes"
or
"No"
.
5.
d
to confirm.
Calling up acknowledged fault messages
Press the following keys:
1.
d
+
å
simultaneously for
approx. 4 s.
The
"Service"
menu is
displayed.
2.
|
/
~
for
"Fault history"
.
3.
d
to confirm.
4.
|
/
~
for the list of current
faults.
Plain text fault display
The following faults are displayed as plain text. The meaning of the fault and the fault
code shown to the right are given in the table on page 27.
■
"Excessive temperature"
■
"Repeat heat-up"
■
"O2 fault–probe"
■
"Boiler flow"
■
"Boiler return"
■
"Flue gas sensor"
■
"Outside temperature sensor"
■
"Buffer sensor, top"
■
"Buffer sensor, centre"
■
"Buffer sensor, bottom"
■
"Supply sensor"
■
"DHW sensor"
■
"Return sensor"
■
"KM BUS"
Calling up fault codes from the fault memory (fault history)
The 10 most recent faults are saved and
may be scanned.
The faults are ordered by date, thus the
most recent fault is fault number 1.
Troubleshooting
Fault display
5604 447 GB
