GB-6
D
GB
F
NL
I
E
PFA 70 in conjunction with PFU 780..L
Parameter 43 = 3
4
Press the Reset/Information button for 1 s.
▷
The display indicates step
01
.
▷
The PFUs start the burner pre-purge procedure.
WARNING
The pre-purge duration is not included in the program.
Pre-purge until the combustion chamber has been ad-
equately ventilated.
5
Press the Reset/Information button for 1 s.
▷
The display indicates step
02
.
▷
The PFUs start the pilot burners.
6
Press the Reset/Information button for 1 s.
▷
The display indicates step
03
.
▷
The PFUs start the main burners, the pilot burners
remain switched on.
7
Press the Reset/Information button for 1 s.
▷
The display indicates step
00
.
▷
The PFUs switch off all the burners.
▷
By pressing the Reset/Information button repeatedly,
the PFUs are activated to switch between pre-purge
(the display indicates step
01
), pilot burner start (the
display indicates step
02
), main burner start (the
display indicates step
03
) or burner off (the display
indicates step
00
).
High/Low operating mode
PFA 700 in conjunction with PFU 760..L
Parameter 43 = 4
4
Press the Reset/Information button for 1 s.
▷
The display indicates step
01
.
▷
The PFUs start the burner pre-purge procedure.
WARNING
The pre-purge duration is not included in the program.
Pre-purge until the combustion chamber has been ad-
equately ventilated.
5
Press the Reset/Information button for 1 s.
▷
The display indicates step
03
.
▷
The PFUs start the burners.
6
Press the Reset/Information button for 1 s.
▷
The display indicates step
04
.
▷
The PFUs 760..L activate the external air valves, the
burners switch to high-fire rate.
7
Press the Reset/Information button for 1 s.
▷
The display indicates step
03
.
▷
The PFUs 760..L deactivate the external air valves,
the burners switch to low-fire rate.
▷
Each time the Reset/Information button is pressed, the
air valves are opened (the burners switch to high-fire
rate, the display indicates
04
) or closed (the burn-
ers switch to low-fire rate, the display indicates
03
).
PFA 70 in conjunction with PFU 780..L
Parameter 43 = 4
4
Press the Reset/Information button for 1 s.
▷
The display indicates step
01
.
▷
The PFUs start the burner pre-purge procedure.
WARNING
The pre-purge duration is not included in the program.
Pre-purge until the combustion chamber has been ad-
equately ventilated.
5
Press the Reset/Information button for 1 s.
▷
The display indicates step
02
.
▷
The PFUs start the pilot burners.
6
Press the Reset/Information button for 1 s.
▷
The display indicates step
03
.
▷
The PFUs start the main burners, the pilot burners
remain switched on.
7
Press the Reset/Information button for 1 s.
▷
The display indicates step
04
.
▷
The PFUs 780..L activate the external air valves, the
main burners switch to high-fire rate.
8
Press the Reset/Information button for 1 s.
▷
The display indicates step
03
.
▷
The PFUs 780..L deactivate the external air valves,
the main burners switch to low-fire rate.
▷
Each time the Reset/Information button is pressed, the
air valves are opened (the burners switch to high-fire
rate, the display indicates
04
) or closed (the burn-
ers switch to low-fire rate, the display indicates
03
).
Faults
DANGER
Electric shocks can be fatal! Before working on possible
live components, ensure the unit is disconnected from
the power supply.
Fault-clearance must only be undertaken by authorized,
trained personnel.
▷
Faults may be cleared only using the measures de-
scribed below.
▷
If the PFA does not respond even though all faults
have been remedied: remove the unit and return it to
the manufacturer for inspection.
?
Faults
!
Cause
•
Remedy
?
The 7-segment display does not light up.
!
Mains voltage is not applied.
•
Check the wiring, apply mains voltage (see type label).
