Selecting The Menu - Viessmann Vitocrossal CRU 800 Service Instructions For Contractors

Burner control unit
Burner control unit VUC 310
Start and test functions during burner start
"Status" display
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Note
For further information on the start and test functions
during burner start, see "Flow diagram for burner
start", page 36

Selecting the menu

Press the following buttons:
1. S for longer than 2 s, until " " flashes.
2. / repeatedly, until the required menu is shown
under "Service": See table below.
3. S to confirm; the number of the selected menu is
shown under "Status".
Menu overview:
"Service" display Description
1 Permanent meters for start-ups and hours run
2 Resettable meters for start-ups and hours run
3 Software version
4 Fault history for the last 10 fault messages (fault memory)
5 Temporarily display process information in the operating display
6 Configuration of control function operating parameters
Calling up information and resetting meters
The following information can be called up:
■ Menu "1": All meter readings
■ Menu "2": Resettable meter readings and resetting.
32
(cont.)
"Service" display Meaning
A System start-up after power supply "ON"
0 Standby
1 System tests, idle state check
2 Fan ramp-up
P Valve and/or relay check
3 Pre-purge
4 Pre-ignition
5 Ignition, flame formation safety time
6 Flame stabilisation
7 Operation with flame
8 After flame post-purge
U Dwell program, no air pressure
C Dwell program, no gas pressure or mains undervoltage
9 Forced ventilation if no flame formation has been detected.
10 Safety shutdown due to flame tear-off
4. / repeatedly, until the required sub-menu is
shown under "Service": See following chapter.
5. S to confirm; the number of the selected sub-
menu is shown under "Status" and the value
relating to the scan or configuration appears
under "Service".
If no other key is pressed within 20 s, the setting or
scan is automatically terminated.
■ Menu "3": Software version
■ Menu "4": Fault history, see page 38