Displayed
fault code
Const.
Weat-
her-
comp.
System
character-
istics
Cause
Remedy
FF
X
X
Burner
blocked
Internal fault
Remove EMC
interference.
If the equip-
ment will not
restart, check
the boiler
coding card
and replace,
or replace the
control unit.
Repairs
Checking the outside temperature sensor (weather-compen-
sated control units)
1.
Pull plug X3 from the control unit.
Checking and acknowledging faults
(cont.)
85
Troubleshooting
56
92
550
GB
Содержание VITODENS 300 WB3A
Страница 10: ...Opening the control unit housing 10 5862 570 GB...
Страница 14: ...Closing control unit housing and inserting user interface 14 5862 570 GB...
Страница 122: ...Temperature profile Factory set code F1 6 to F1 15 Control functions cont 106 Function description 5692 550 GB...
Страница 125: ...A1 Main PCB A2 Mains supply unit Connection and wiring diagrams external connections 109 Designs 5692 550 GB...
Страница 129: ...Parts lists cont 113 Parts lists 5692 550 GB...
Страница 130: ...Parts lists cont 114 Parts lists 5692 550 GB...
Страница 131: ...Parts lists cont 115 Parts lists 5692 550 GB...
Страница 132: ...Parts lists cont 116 Parts lists 5692 550 GB...
Страница 133: ...Parts lists cont 117 Parts lists 5692 550 GB...
Страница 145: ...129 5692 550 GB...
Страница 146: ...130 5692 550 GB...
Страница 147: ...131 5692 550 GB...