Viessmann Vitodens 100 Installation And Service Instructions Manual page 66

Wb1a

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Troubleshooting

Repairs

(cont.)

Check the temperature limiter

If the burner control unit cannot be reset after a fault shutdown, although the

boiler water temperature is below approx. 75 °C, check the temperature limiter.

1. Pull the leads from temperature lim-

iter A.

2. Check the continuity of the tem-

perature limiter with a multimeter.

3. Remove faulty temperature limiter.

4. Coat the replacement temperature

limiter with heat conducting paste

and install.

5. To reset press "Reset" key on the

control unit.

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