Discussions about Nibe S-series and the integration

Third party integrations
1

In 2022.12.0 we now have the possibility to use the Nibe integration to connect to S-Series Heat Pump thanks to @elupus. I lack the possibility to get the energy from the pump. I have found one address and have used it in a Modbus integration:

      - name: "Nibe - Flowmeter heat (only compressor)"
        unique_id: Nibe.address.1585      
        unit_of_measurement: "kWh"
        data_type: uint32
        swap: word
        device_class: energy
        address: 1585
        input_type: input
        scale: 0.1
        precision: 1
        state_class: total_increasing
        slave: 1

This I think is the total energy leaving the pump. But I would like to get hold of the input energy. It should be available because I can see it on the display. Does anyone have an idea what register it could be?

3 Likes
2

Hi everyone I need your help!
I just installera the Nibe Integration and connected to My S320 successfully. I find the heat pump and 755 entities. When I try and enable the ones I want to use it comes up as unavailable, what am I doing wrong?

1 Like
3

Unsure. Have look in the logs for any errors.

4

Logger: homeassistant.components.nibe_heatpump
Source: helpers/update_coordinator.py:201
Integration: Nibe Heat Pump (documentation, issues)
First occurred: 06:19:50 (2 occurrences)
Last logged: 16:59:42

Error fetching Nibe Heat Pump data: Failed to update: Error ‘Function code is not an allowable action for the server.’ reading roomsensor-1-1-30027 starting: 26 count: 1 from: 0

Found this in the logg, I have no idea where to even start.

5

@Kenpaisimmu Do you have a Room sensor?

6

Yes I have a ROT10 at first floor and a THS10 on the second floor, I tried to to enable a few other entities like outdoor temp but same thing.

7

Disable all entities to start with. That error could come from the climate entity. Then only enable the Prio sensor and see if that works.

8

Tried that but didn’t work, but now it seems the “heating curve” entity is working at least.

9

After disabling it can take some time for it to start working again. But what i was curious about is if enabling some entity break all the other.

10

Hi I have the same issue with my S1255

The address I had in yaml file:

  - name: "Heatpump - Power Usage"
    unique_id: "power_usage"
    unit_of_measurement: "W"
    data_type: int16
    device_class: power
    address: 2166
    input_type: input
    scale: 1
    precision: 0
    slave: 1

That is supposed to show consumption

11

Another issue I uncovered was the “More Hot Water” entity. On the S-Series and specifically on MyUplink, this is a simple on/off switch.

I found this entity “number.more_hot_water_40698” which is a slider from -128 to +127. If I push the slider the +127 it turns on the more hot water.

It would be good to have a simple switch.

12

Does anyone have an S1255 and has the possibility to use an USB-device to get all active registers?

13

Yes and I have dumped them. I can do so once more tonight.

14

Does anyone with a S1255 get values in the BE1/BE2/BE3 (current) sensors? Mine are all 0 which is the same as when I check through the myUplink API. Current Power (EME 20) is also 0.

15

I got them working on a S320, but they never go below 2 A, even when the heat pump isn’t running. Are you sure the CT-clamps are connected?

Does anyone know how you change the set point for the room temperature on a S320? It’s the value marked in the image.

Screenshot_20221215-134956
Screenshot_20221215-1349561080×1177 120 KB

16

This is my experimental setup for power usage, derived from 1903 (current) address using P(kwh) = U * I * 1.732 / 1000 equation for three phases. Current is register 1903 divided by 10. I have SMOS40 and Nibe s2125. So far looks like a good estimate.

     sensors:
          # 3.1.2 Overview
        - name: "wp In Power"
          unique_id: "wp_power_in"
          data_type: int16  # int8
          address: 1903
          input_type: input  # R/W
          scale: 0.06582
          precision: 2
          state_class: measurement
          unit_of_measurement: "kW"
          slave: 1

And total energy spent:

sensor:
  - platform: integration
    source: sensor.wp_power_in
    name: energy_spent
    round: 2
    unit_time: h
17

With new firmware (nibe-n-2_17_5.swu) new energy related modbus registers on are available on smo s40:

Energy log - Energy produced for heat during current hour	MODBUS_INPUT_REGISTER	2283	100	kWh	6	0	0	0
Energy log - Energy produced for hot water during current hour	MODBUS_INPUT_REGISTER	2285	100	kWh	6	0	0	0
Energy log - Energy produced for pool during current hour	MODBUS_INPUT_REGISTER	2287	100	kWh	6	0	0	0
Energy log - Energy produced for cooling during current hour	MODBUS_INPUT_REGISTER	2289	100	kWh	6	0	0	0
Energy log - Energy used for heat during current hour	MODBUS_INPUT_REGISTER	2291	100	kWh	6	0	0	0
Energy log - Energy used for hot water during current hour	MODBUS_INPUT_REGISTER	2293	100	kWh	6	0	0	0
Energy log - Energy used for pool during current hour	MODBUS_INPUT_REGISTER	2295	100	kWh	6	0	0	0
Energy log - Energy used for cooling during current hour	MODBUS_INPUT_REGISTER	2297	100	kWh	6	0	0	0
Energy log - Energy used by additional heater for heat during current hour	MODBUS_INPUT_REGISTER	2299	100	kWh	6	0	0	0
Energy log - Energy used by additional heater for hot water during current hour	MODBUS_INPUT_REGISTER	2301	100	kWh	6	0	0	0
Energy log - Energy used by additional heater for pool during current hour	MODBUS_INPUT_REGISTER	2303	100	kWh	6	0	0	0
Energy log - Current power consumption	MODBUS_INPUT_REGISTER	2305	100	kW	6	0	0	0
Energy log - Current power consumption, components	MODBUS_INPUT_REGISTER	2307	100	kW	6	0	0	0
i
3 Likes
18

Were you able to get them visible into HA?

19

yes.

modbus:
  - name: "Nibe2125"
    type: tcp
    host: 192.168.1.220
    port: 502
    sensors:
      - name: "Nibe heating energy last hour"
        unique_id: "nibe_in_energy_heating"
        data_type: int16  # int8
        address: 2291
        input_type: input  # R/W
        scale: 0.01
        precision: 2
        state_class: measurement
        unit_of_measurement: "kWh"
        slave: 1
        scan_interval: 900
      - name: "Nibe hot water energy last hour"
        unique_id: "nibe_in_energy_hot_water"
        data_type: int16  # int8
        address: 2293
        input_type: input  # R/W
        scale: 0.01
        precision: 2
        state_class: measurement
        unit_of_measurement: "kWh"
        slave: 1
        scan_interval: 900
      - name: "Nibe hot water add energy last hour"
        unique_id: "nibe_in_add_energy_hot_water"
        data_type: int16  # int8
        address: 2301
        input_type: input  # R/W
        scale: 0.01
        precision: 2
        state_class: measurement
        unit_of_measurement: "kWh"
        slave: 1
        scan_interval: 900
      - name: "Nibe heating add energy last hour"
        unique_id: "nibe_in_add_energy_heating"
        data_type: int16  # int8
        address: 2299
        input_type: input  # R/W
        scale: 0.01
        precision: 2
        state_class: measurement
        unit_of_measurement: "kWh"
        slave: 1
        scan_interval: 900
      - name: "nibe_current_power"
        unique_id: "nibe_current_power"
        data_type: int16  # int8
        address: 2305
        input_type: input  # R/W
        precision: 2
        state_class: measurement
        unit_of_measurement: "kW"
        scale: 0.01
        slave: 1
        scan_interval: 60
      - name: "nibe_current_power_comp"
        unique_id: "nibe_current_power_comp"
        data_type: int16  # int8
        address: 2307
        input_type: input  # R/W
        precision: 2
        state_class: measurement
        unit_of_measurement: "kW"
        scale: 0.01
        slave: 1
        scan_interval: 60

Utility meters should use delta setting:

image
image1146×1671 88.4 KB

2 Likes
20

Within how long should I be able to see any results and/or is it possible to share your complete configuration?

The only thing I’m really interested in is somehow getting the COP value.