VALBERG WF 1114 A W566C Consignes D'utilisation page 24

B
Product usage
Note:
Usage counter
1. Unplug the equipment for 10s and reconnect again.
2. Power on and within 10s, please press [Delay] and [Boost] on control panel
simultaneously and continuously for around 5s until the device display shows
digits -- the value can indicate the times of equipment usage.
3. Repeat step 1 again and customer can resume to normal operation.
22 EN