Check the boiler temperature sensor, cylinder temperature
sensor or the flow temperature sensor for low loss header
1.
Boiler temperature sensor: Pull the
leads from boiler temperature
sensor
A
and measure the resis-
tance.
Cylinder temperature sensor: Pull
the plug
%
from the cable harness
on the control unit and measure the
resistance.
Flow temperature sensor: Pull
plug X3 from the control unit and
measure the resistance across
terminals X3.4 and X3.5.
Repairs
(cont.)
87
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...
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