32
Display and programming unit
A display and programming unit is integrated into the
burner control unit. The display screen shows the rele-
vant operating status, the service and parameter sta-
tus, as well as any fault or error messages. The keys
allow you to change settings in the various control lev-
els.
Status Service
S
R
Fig. 22
A
Reset button
B
Operating and fault indications:
Heat demand
Burner operation
Maintenance
Fault
C
Selection key
D
Cursor keys
Note
Depending on the system configuration, the display
and control functions can in part also be carried out on
the boiler control unit.
Control unit installation and service instructions,
operating instructions
Operating display
In standard mode, the status indicator shows the cur-
rent operating status. The same applies in a fault state
after pressing reset button
R
.
The following displays are shown automatically. If a
fault occurs, see the fault codes on page 38
onwards. You can exit at any time by pressing reset
button
R
(hold down for 0.5 to 10 s).
Display
Status Service
Fig. 23 Example
Meaning
Status
Service
0
A
System start-up after power supply "ON"
0
0
Standby
0
1
System tests, idle state check
0
2
Fan ramp-up
0
P
Valve and/or relay check
0
3
Pre-purge
0
4
Pre-ignition
0
5
Ignition, flame formation safety time
0
6
Flame stabilisation
Burner control unit
Burner control unit VUC 310
5816717
Codes
