Fermax 3321 with error p16-33-20032001 - Ring Intercom - Ring Community

I tried to test the fermax 3321 with ring intercom which is compatible but I get error p16-33-20032001 The 3 wires are well connected and tested for connectivity for +, - and L. Don’t know what to do anymore, perhaps the fermax is not really compatible.

Replacing old Fermax intercom : r/homeautomation

The Citymax Audio Door Entry system kit includes: For the interior of the house, the Citymax telephone with wall installation and easy fixation. Made

Kit Audio Intercom 4+N Citymax 1W 6201

Video Way Fi 7 KitThe kit includes1438 1/W WAY-FI Video outdoor panel with rain hood.1436 Color WAY-FI Monitor with 7” IPS capacitive

FERMAX F0 1431- 1/W Video Way Fi 7 Kit | FKGTC

Fermax 8022 Error - Sometimes opening works, sometimes doesn't - Ring Intercom - Ring Community

Error 1: Error connecting to the Fermax device

Ring Intercom, problema di comunicazione codice P16-33-20032001 con Urmet 1740/1 e staffa 1740/83 - Citofoni, videocitofoni e intercomunicanti - PLC Forum

Ring Intercom - Ring Community

Ring Intercom - Fermax 8022 not working - Ring Intercom - Ring Community

Replacing old Fermax intercom : r/homeautomation