Viessmann Vitodens 200, Service Instructions Manual

Page: 27 / 116

27
Troubleshooting
Cause Check
ćć Check sequence (see pageĂ10)
Flue gas system leaks Check the flue gas system for leaks.
Outside temperature sensor
Short circuit
or
Check the outside temperature
sensor (see pageĂ38)
or
cable break
Flow temperature sensor low loss header
Short circuit
Check the flow temperature sensor
(see pageĂ39) Short circuit
or
cable break
(see pageĂ39)
Boiler temperature sensor
Short circuit
or
Check the boiler temperature sensor
(see pageĂ39)
or
cable break
Flow temperature sensor
Short circuit
Mixer motor installation
instructions
Flow temperature sensor
Cable break
instructions
5692Ă485
G
B
Control unit for weather-compensated mode
with Comfortrol programming unit
Open flapĂ ³ Ăfault scanĂ"A"
0
1
2
3
4
0
0
3
4 6
7
8
9
10
2
1
3
4 5 6
7
8
9
10
2
1
5
B A
D C
-
+
i
S
Display
Burner
fault
Display