12 | © Danfoss | Energy Meters | 2019.03
VU.IG.B9.02
Installation guide
SonoSelect and SonoSafe
2.9 Battery
1. Before handling module PCB ensure relevant
ESD regulations are observed (IEC 61340-5-1).
2. Break installation seal and open enclosure.
3. Disconnect battery connector and remove
battery.
4. Short circuit battery connectors on PCB using a
small flat head screwdriver.
5. Connect new battery to PCB.
6. Fit battery in enclosure.
Click!
7. Close enclosure making sure that no cables
interfere with rubber sealing or other internal
parts.
8. Meter displays “use app” on power up.
Use SonoApp to set date/time and confirm
battery change (and reset tamper alarm E13 for
SonoSelect). If no Sonoapp is available a long
press of 5 seconds when display shown “use app”
will also confirm the battery change. Note that
date and time will not be updated.