70
If there is a fault, the display shows
"Burner fault"
or
"Active messages"
.
Note
If a central fault message facility is connected, this is
switched on.
If "Connection error" appears on the display:
Check connecting cable and plug between HMU heat
management unit and HMI programming unit.
Calling up fault messages
Tap the following buttons:
1.
" "
2.
/
for:
■
"Details"
if burner faults are present
■
"Active messages"
if further faults are present
3. OK
4.
/
for
"Error"
to display all fault messages.
5. OK
6.
/
for the required message
For an explanation of the fault codes, see the fol-
lowing table.
7. OK
8.
" " for
"Error"
9.
/
to call up further messages
Acknowledging the fault display
1.
" "
2.
/
for
"Active messages"
3. OK
4.
/
for
"Error"
to display all fault messages.
5. OK
6.
/
for
"Acknowledge"
to acknowledge all
fault messages.
Note
Service messages are also acknowledged.
Note
Any connected central fault message facility is
switched off.
If an acknowledged fault is not remedied, the fault
message will be redisplayed the following day at
07:00 h, and the fault message facility restarts.
Calling up acknowledged fault messages
Tap the following buttons:
1.
" "
2.
/
for
"Active messages"
.
3. OK
4.
/
for
"Error"
5. OK
Note
When troubleshooting, always observe the
subscriber number of the component.
Check the component displayed, rectify the fault if
required. The subscriber number of the component
depends on the rotary switch position of the corre-
sponding extension module. The rotary switch
position was set during installation.
To identify the affected module, check the rotary
switch position on the module if necessary.
The following is displayed:
■
Date and time of the occurrence of the fault
■
Fault number
Troubleshooting
Fault display on the programming unit
6130884
Service
