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Vitodens 200-W B2HA 112, 150 Service
5683 710 - 09
82
Troubleshooting
Corrective Action
(continued)
Replacing the flow rate sensor
Note:
In the event of a fault, both sensors need to be
replaced.
1. Drain the boiler on the heating water side.
2. Pull leads from flow rate sensor
A
.
3. Undo screws and remove faulty flow rate sensor
A
.
4. Install new flow rate sensor
A
and secure with the
screws.