37
Resetting operating parameters to their delivered condition
1. S
longer than 2 s,
" "
flashes.
2.
until "6" is shown under Service.
3. S
"6" is displayed under Status.
4.
until "0" is shown under Service.
5. S
"1" is shown under Status and "dEL" under Serv-
ice.
6. S
to confirm. If reset successfully, "1" is shown
under Service; if it failed, "0" is shown.
7. S
to change to the operating display.
Manual operation and service display
To call up the service display and for manual operation
the burner must be running. The service display shows
the current modulation level in %.
Press the following keys:
1.
/
S
simultaneously for longer than 2 s.
The burner changes to manual mode and a
"P" will be shown under Status. The current
modulation level will flash under Service.
2.
for the lower heating output, until "0" is shown
under Service.
3.
for the upper heating output, until "100" is
shown under Service.
4.
/
S
simultaneously for longer than 2 s.
The burner returns to modulating mode.
Burner control unit
Burner control unit VUC 310
(cont.)
5812086
Codes
