Troubleshooting - Viessmann VITOWELL comfort Installation And Operation Manual

Storage electric water heater
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Troubleshooting

Troubleshooting
Do not attempt to service this appliance on your own. Please contact your
competent service technicians.
Before calling your Technical Servicing Centre, check that the fault is not due to lack
of water or power failure.
In case of abnormal water heating, a thermic safety switch, according to the CEI-EN
regulations, breaks the circuit in both feeding phases to the heating element. In this
case it is better to call the Technical Assistance.
The buzzer will send an alarm when there is any fault. The alarm will reset after the
fault is cleared(D1 type).
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