Viessmann VITODENS 200-W Service Instructions Manual page 109

Repair
(cont.)
3. Remove the faulty temperature lim-
iter.
4. Install a new temperature limiter.
Checking the fuse
1. Switch OFF the power.
2. Release the side closures and pivot
the control unit down.
Extension kit for heating circuit with mixer
Checking the setting of rotary selec-
tor S1
The rotary selector on the PCB of the
extension kit defines the assignment to
the relevant heating circuit.
5. After commissioning, press reset but-
ton R on the control unit.
F1
3. Remove cover A.
4. Check fuse F1 (see connection and
wiring diagram).
Troubleshooting
109