Fault code
on the dis-
play
System character-
istics
Cause
Measures
F5
Burner in a fault
state
The air pressure
switch does not
respond.
Check air pressure
switch and replace if ne-
cessary.
Press "
E
RESET".
F7
Burner in a fault
state
No control/feed-
back of/from fuel
valve BV 2
Replace fuel valve BV 2
Press "
E
RESET".
F8
Burner in a fault
state
Fuel valve BV 1
closes late
Check nozzle, vent oil
supply line, check sole-
noid valve
Press "
E
RESET".
F9
Burner in a fault
state
Fan speed too
low during the
burner start
Check the fan, check
the fan connecting
cables, check the fan
power supply.
Press "
E
RESET".
F9
Burner in a fault
state
Fan power supply
is interrupted
&
The fire safety
switch or flue
gas thermostat
is faulty or has
responded
&
The jumper
across term-
inals 1 and 2 in
junction box
201 is broken or
has been
removed
Check fire safety switch
or smoke thermostat,
check jumper across
terminals 1 and 2 in
junction box 201 (see
page 97).
Press "
E
RESET".
FA
Burner in a fault
state
Fan speed devia-
tion
Check fan, check con-
necting cables to fan.
Press "
E
RESET".
Fb
Burner in a fault
state
3 x flame blow-off
during operation
Check oil supply, check
nozzle.
Press "
E
RESET".
Fd
Burner blocked
Burner control
unit fault
Press "
E
RESET" . Re-
place control unit if the
fault persists
Fault codes
(cont.)
73
Troubleshooting
5692
779
GB
Содержание VITOLADENS333-F
Страница 96: ...A1 Main PCB A2 Power supply unit Connection and wiring diagram external connections 96 Designs 5692 779 GB...
Страница 101: ...Parts lists cont 101 Parts lists 5692 779 GB...
Страница 102: ...Parts lists cont 102 Parts lists 5692 779 GB...
Страница 103: ...Parts lists cont 103 Parts lists 5692 779 GB...
Страница 104: ...Parts lists cont 104 Parts lists 5692 779 GB...
Страница 105: ...Parts lists cont 105 Parts lists 5692 779 GB...