The various DHW sensors are not as expected

[brucemiranda]

When the Evohome system has domestic hot water, a few sensors are created by ramses_cc that aren't required or not being updated correctly.

e.g. below use 01_078710 controller id

The main entity water_heater.01_078710_hw is not being named and so HA reports this as Unnamed Device.

sensor.01_078710_hw_heat_demand is never updated and always shows unavailable.

sensor.01_078710_hw_relay_demand is tracking something but I doubt it is actually tracking the HW relay demand. Because the HW relay can only ever be 0% or 100% but this sensor sees various values.

sensor.13_109598_relay_demand seems to track the HW BDR91 relay demand better. Even if its slightly delayed in its updates.

The actual sensors within the HW system itself seem OK, e.g.:

• binary_sensor.13_109598_active correctly tracks the BDR91's LED.
• sensor.07_017494_temperature correctly reports the HW temperature as reported by the CS92
• binary_sensor.07_017494_battery_low correctly reports the battery status as reported by the CS92

[zxdavb]

Bruce said:

While I have seen many systems that don’t use any appliance control. I have yet to see a system that uses the Evohome HW kit but no HW valve device. So if there is a stored_hotwater 07: sensor, there should be a 13: hotwater_valve

The only time I can see that the hotwater_valve can have a relay that isnt detected is if someone managed to pair the old read only obsolete relay units. But I don’t even know if those would pair in HW mode. The HW kit always came with a BDR91

sensor.01_078710_hw_heat_demand does not track the HW heat demand. Infact it doesn’t appear to be updating at all. Maybe a bug. I have raised this.

...

FA_relay_demand is not an entity that is created by ramses_cc automatically you have to create it using a field template from the climate.01_078710 state attributes

sensor.13_109598_relay_demand does a better job at tracking the DHW demand. But it often has a delay.

However the binary_sensor.13_109598_active is by far the best indication of real demand on the DHW valve. And given that DHW can only ever be 0% or 100%, this is the sensor I prefer.

EC needs to be able to work with the default settings provided by HA and ramses_cc…Not everyone is a tinkerer.

[zxdavb]

is this related to #168, #166