Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 140

Troubleshooting
Repairs
(cont.)
Checking cylinder temperature sensors and buffer temperature
sensors
A
A Cylinder temperature sensor B3
B Buffer temperature sensor B42 or common flow sensor B10 (common flow tem-
perature sensor)
C Buffer temperature sensor B41
D Buffer temperature sensor B4
E Junction box
140
B
E
1 2 3 4
ATS B42/
Funk
B10
Regelung
1. Remove the plug to the respective
C
2 b
BSB
sensor in the junction box.
D