@akatar The app currently provides quite some data per device:
Central Heating device:
- Boiler (flame) state
- (Domestic) Hot Water state
- Modulation level
- Intended boiler temp
- Actual boiler temp
- Return water temp
- Boiler state code
- Boiler error code
Like shown in below screenshot:
The other devices show:
- temperature
- setpoint
- battery value
- valve position (for the valves)
I think this is the most important data to check the functioning of the zone heating system. If we missed some, let me know.