Unfortunately I had to witness my bell system failing yet again, when the Nuki Opener battery died. I have had to replace the Opener batteries four times within two years time - which by all means is more than fine. However, I was NOT notified about the batteries running low the last two times resulting in fully depleted batteries. This comes with a surprising caveat: When the batteries are completely dead, the Opener causes a short circuit in the A/B lines of the bell system. Hence, the system fails for all parties living in the same building (no bell, no intercom, no door opener).
The Nuki App was working fine at all times as I am also using a Nuki Smart Lock on a daily basis. For batteries I am using standard Varta AAA. The building has a Siedle system with the “Siedle In-Home-Bus”. Every apartment is equipped with a BTS850-02 handset.
Of course this could be prevented by replacing the batteries in time. But without a notification this poses a rather difficult task without wasting too many batteries. Either way, the system should not be failing if the batteries of the Opener are empty.
Is this supposed to happen, or am I in “luck” having bought a faulty unit?