74
Weather-compensated control unit
In the event of a fault, red fault indicator
A
flashes.
" "
flashes on the display and
"Fault"
is shown.
R
bar
A
Fig. 41
The fault code is displayed with
OK
.
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 transferred to the standard
menu.
■
Any fault message facility, if connected, will be
switched off.
■
If an acknowledged fault is not remedied, the fault
message will be re-displayed the following day and
the fault message facility restarted.
Calling up acknowledged faults
Select
"Fault"
in the standard menu. The current
faults will be displayed in a list.
Calling up fault codes from the fault memory (fault
history)
The 10 most recent faults (including resolved ones)
are saved and can be scanned.
Faults are sorted by date.
1.
Press
OK
and
å
simultaneously for approx. 4 s.
2. "Fault history"
3. "Display?"
Deleting fault history
1.
Press
OK
and
å
simultaneously for approx. 4 s.
2. "Fault history"
3. "Delete?"
Constant temperature control unit
In the event of a fault, red fault indicator
A
flashes.
The two-digit fault code and (subject to the type of
fault)
" "
or
" "
flash on the programming unit dis-
play.
R
bar
A
Fig. 42
Other current faults can be displayed with / . For an
explanation of the fault codes, see the following pages.
1
5 0
ã
Fig. 43
Example: Fault code "50"
Acknowledge a fault
Press
OK
; the standard display is shown again.
A fault message facility, if connected, will be switched
OFF.
If an acknowledged fault is not remedied, the fault
message will be re-displayed the following day and the
fault message facility restarted.
Calling up acknowledged faults
Press
OK
for approx. 4 s.
Troubleshooting
Fault display
5772 980 GB
Service