Domoticz Community Forum - Support & Discussion

• Legacy Domoticz framework with 256-device limit
• Device IDs could change, causing orphaned devices
• COP values logged during idle periods skewed efficiency statistics
• No multi-instance support for multiple heat pumps

• DomoticzEx Framework: Modern Device/Unit model with proper callback support
• Stable Device IDs: HardwareID-based identifiers that never change across restarts or updates
• Intelligent COP Tracking: Separate measurements for heating mode, DHW mode, and combined total — only logged during steady-state operation
• Gated Sensors: Pressure, superheat, and ΔT values only update during active cycles, keeping your statistics clean
• Multi-Instance Support: Run multiple plugin instances for homes with more than one heat pump
• Secure Write Protection: All write commands validated against an explicit allowlist
• Logical Device Organization: 62 devices organized into 14 functional groups with room for expansion
• Multi-Language: English, Polish, Dutch, German, and French

Group              | Units     | Description
-------------------|-----------|---------------------------------------------
Status             | 1         | Working mode (Heating/DHW/Cooling/Idle)
Controls           | 10-16     | Heating mode, DHW mode, cooling, setpoints
Power Input        | 30-32     | Electrical consumption (total, heating, DHW)
Heat Output        | 40-42     | Thermal energy produced (total, heating, DHW)
Efficiency         | 50-52     | COP values (total, heating, DHW) — gated
Heating Circuit    | 60-67     | Supply/return temps, ΔT, pump speed, flow
DHW                | 80        | Hot water tank temperature
Environment        | 90-93     | Outside temp, room temp and targets
Source Circuit     | 100-106   | Brine/ground loop temps, ΔT, pump, flow
Mixing Circuits    | 120-131   | MC1 and MC2 temperatures
Compressor         | 140-144   | Frequency, target/min/max freq, capacity %
Refrigerant        | 160-167   | Hot gas, suction, discharge, evap/cond temps
Statistics         | 180-185   | Runtime hours, start count, cycle duration
Diagnostics        | 200-201   | Error count, cooling permitted status

• Compressor runtime hours and start count
• Last cycle duration
• Capacity utilization percentage
• Discharge, evaporating, and condensing temperatures
• Controller spread targets (heating and source ΔT setpoints)
• Heating and source flow rates
• Mode-specific runtimes (heating, DHW, cooling hours)

cd /path/to/domoticz/plugins
git clone https://github.com/Rouzax/luxtronik-domoticz-plugin-v2.git luxtronik-domoticz-plugin-v2
sudo systemctl restart domoticz

# 1. Backup first!
sudo systemctl stop domoticz
cp domoticz.db domoticz.db.backup

# 2. Preview what will be migrated
sqlite3 domoticz.db < plugins/luxtronik-domoticz-plugin-v2/migration/discover.sql

# 3. Run migration
sqlite3 domoticz.db < plugins/luxtronik-domoticz-plugin-v2/migration/migrate.sql
sudo systemctl start domoticz

• None: Errors only
• Basic: Lifecycle events, connection status, update summaries
• Device: Individual device updates and state changes
• Comms: Socket communication details
• Verbose: Detailed value conversions and gating decisions
• All: Everything (generates a lot of output!)

2025-12-04 14:20:25.100 HP: [VERBOSE] Heartbeat triggered
2025-12-04 14:20:25.100 HP: [VERBOSE] Full update starting
2025-12-04 14:20:25.101 HP: [COMMS] Connected to 192.168.2.63:8889
2025-12-04 14:20:25.105 HP: [COMMS] READ_CALCUL: Received 272 values
2025-12-04 14:20:25.105 HP: [VERBOSE] Fetched READ_CALCUL: 272 values
2025-12-04 14:20:25.106 HP: [COMMS] Connected to 192.168.2.63:8889
2025-12-04 14:20:25.321 HP: [COMMS] READ_PARAMS: Received 1162 values
2025-12-04 14:20:25.321 HP: [VERBOSE] Fetched READ_PARAMS: 1162 values
2025-12-04 14:20:25.321 HP: [VERBOSE] Updating devices for READ_CALCUL
2025-12-04 14:20:25.321 HP: [VERBOSE] working_mode: No changes
2025-12-04 14:20:25.321 HP: [VERBOSE] power_total: Next update in 285s
2025-12-04 14:20:25.323 HP: [VERBOSE] Skipping cop_dhw: gated - mode filtered (mode=0, allowed=[1])
2025-12-04 14:20:25.336 HP: [DEVICE] Updated heating_flow: Values changed - sValue: 300.0 -> 400.0
2025-12-04 14:20:25.357 HP: [DEVICE] Updated evaporating_temp: Values changed - sValue: 6.4 -> 6.5
2025-12-04 14:20:25.396 HP: [VERBOSE] Skipping last_cycle: gated - cycle in progress
2025-12-04 14:20:25.396 HP: [VERBOSE] cooling_permitted: No changes
2025-12-04 14:20:25.396 Status: HP: READ_CALCUL: Updated 7, unchanged 46, gated 2
2025-12-04 14:20:25.397 HP: [VERBOSE] Updating devices for READ_PARAMS
2025-12-04 14:20:25.397 HP: [VERBOSE] heating_mode: No changes
2025-12-04 14:20:25.397 HP: [VERBOSE] hot_water_mode: No changes
2025-12-04 14:20:25.397 HP: [VERBOSE] dhw_power_mode: No changes
2025-12-04 14:20:25.397 HP: [VERBOSE] cooling_enabled: No changes
2025-12-04 14:20:25.397 HP: [VERBOSE] temp_offset: Next update in 285s
2025-12-04 14:20:25.397 HP: [VERBOSE] dhw_temp_target: Next update in 285s
2025-12-04 14:20:25.397 HP: [VERBOSE] room_temp_setpoint: Next update in 285s
2025-12-04 14:20:25.397 Status: HP: READ_PARAMS: Updated 0, unchanged 7, gated 0
2025-12-04 14:20:25.397 HP: [VERBOSE] Full update complete 

• Single-connection refactor — heartbeat reads (READ_CALCUL + READ_PARAMS) now share one TCP connection instead of opening two per cycle
• Fixed a partial TCP read vulnerability that could silently corrupt data under poor network conditions
• Fixed retry logic — the old MAX_RETRIES=1 actually meant zero retries
• Cleaner plugin teardown on stop

cd /path/to/domoticz/plugins/luxtronik-domoticz-plugin-v2
git pull
sudo systemctl restart domoticz

• Pump Power Compensation — On/Off (default: Off)
• Pump Power Ranges (W) — HUP min, HUP max, VBO min, VBO max (default: 2,60,3,140 for WZSV 92K3M)

• Condensing temperature — from firmware calculation (gated)
• Subcooling — condensing temp minus liquid line temp, indicates refrigerant charge health (gated)
• Condensing pressure — from firmware calculation (gated)
• Cooling release timer — countdown until cooling mode is permitted (HH:MM:SS)

cd /path/to/domoticz/plugins/luxtronik-domoticz-plugin-v2
git pull
sudo systemctl restart domoticz

• Requires Domoticz 2026.1 or newer and Python 3.11 or newer. The new settings page uses named plugin settings, which older Domoticz versions do not have. On an older Domoticz, stay on 2.2.0.
• Your settings move to new fields. Your previous values keep working until you next save the plugin's hardware page, but that page shows the defaults, not your values. Before pressing Update, choose your values again. The plugin lists them in the Domoticz log at every start until you do, and sends the same list once through your Domoticz notification systems. Saving without choosing them again resets them to the defaults shown. IP address and port are not affected.

Settings moved to new fields in this version. Until you save the hardware page, the plugin keeps using your previous values. ... Previous values: Max COP value = 30; Update interval = 20 seconds; Language = Nederlands; Pump power compensation = WZSV 92; Debug level = None

• Pump power compensation by model. The controller only measures compressor power, which makes COP look better than it is. Choose WZSV 62, 92, 122 or 162 and the plugin adds the estimated power of the heating and brine circulation pumps, with values from the WZSV technical data. Choose Custom to enter the four pump power values yourself, for another heat pump or different pumps. An invalid value is reported by field, for example "Brine pump min 200 W is above max 140 W".
• Language "Same as Domoticz" is the new default. Device names follow the Domoticz interface language when it is English, Polish, Dutch, German or French, otherwise English. Names you changed yourself are kept.
• Update interval is now a choice of 10, 15, 20 or 30 seconds. A previous interval above 30 seconds is limited to 30.

• The description of the "Cooling release" device was English in every language; it is now translated. Existing devices pick it up on the next start, unless you edited the description yourself.

• Plugin manager: update the plugin as usual.
• Release zip: download luxtronikex-v3.0.0.zip from the release page and replace the contents of your plugins/luxtronikex folder.
• Git: if you cloned the lean dist branch, pull and restart Domoticz:

cd /path/to/domoticz/plugins/luxtronikex
git pull
sudo systemctl restart domoticz.service

imautohuttraeger wrote: Saturday 24 October 2026 14:29 In the initial post one year ago, you mention, that Wolf heat pumps are base on Luxtronic 2. But it seems, that this was only valid for older models - right?

I have a Wolf CHA07 and at least AI tells me, that it is not Luxtronic based. Background: I would love to see all data in Domoticz but haven't found an easy way for the time beeing.

1. ISM7 / Link Home + ism7mqtt: several CHA owners read their data this way and publish it to MQTT. From MQTT you can get it into Domoticz, for example via the MQTT Auto Discovery gateway (if discovery messages are available) or with dzVents/Node-RED.
2. Wolf ISM8 module: Wolf's local interface; the CHA is listed as supported in the openHAB ISM8 binding docs. Which data points you get depends on the ISM8 and heat pump firmware. You would still need a bridge into Domoticz.
3. eBUS + ebusd: possible, but owners describe it as fiddly: the adapter receives data, decoding the CHA messages is the hard part. Check the ebusd-configuration repo for current CHA support before buying an adapter.

Ragdag wrote: Saturday 24 October 2026 14:44 [...]
You're right, and I should have been more precise in that first post
[...]

imautohuttraeger wrote: Saturday 24 October 2026 16:01

Ragdag wrote: Saturday 24 October 2026 14:44 [...]
You're right, and I should have been more precise in that first post
[...]

Oh no - this was not meant by me to complain. Thank you very much for the detailed description of possible solutions. Indeed I was trying ism7mqtt a while ago, but I have it up without success (I am just a "copy - paste - hoping it works - guy )

• ISM8 module: Wolf's local network interface. It sends its data straight to a server you choose, no cloud involved, and Wolf publishes the data list for it: temperatures, heating and cooling power, power consumption, pump and valve status, system pressure, operating mode and fault codes. If I ever build a plugin, this is the only route where I think that's realistic.
• Link Home / ISM7: what newer CHA units usually come with. It mainly talks to Wolf's cloud (the Smartset app), and its local protocol is not documented. ism7mqtt works around that by reverse-engineering it, which is also why setting it up can be fiddly. A plugin built on that could break with any Wolf firmware update, so I'd rather not go there.
• eBUS: the internal bus between the Wolf components. It needs an extra adapter, and other CHA owners say turning the raw messages into usable values is the hard part. Not a good base for a plugin.
• EEBUS: despite the name, not the same as eBUS. It came with controller firmware 5.0 and is meant for energy management (solar and grid signals), not for monitoring.

1. Which Wolf network modules do you have: Link Home, ISM7i, ISM8i, or none? If you're not sure, the model name is usually printed on the module itself.
2. Which CHA do you have (07 or 10), with or without cooling, and are there other Wolf parts connected (BM-2 control module, mixer modules, solar, ventilation)?
3. Which values would you most like to see in Domoticz?
4. Which Domoticz version are you running?
5. When you tried ism7mqtt, do you remember where it got stuck? That might still be the quickest way to get your data in.

• Actual power: power consumption (heat pump + electric heater), heating output and compressor frequency.
• Consumed energy: electrical energy counters (previous day, heating period, previous year).
• Heat produced: heat amounts for heating, hot water and cooling, plus per day, month and year.
• Compressor starts: the start counter, plus compressor run hours.

1. Do you already have an MQTT broker running (for example Mosquitto)?
2. What does your Raspberry Pi show when you run this command in a terminal? That tells me which version you need.

   Code: Select all

   uname -m

3. Is Docker installed on it? (No problem if not.)
4. Do you use the Wolf Smartset app regularly, or could you live without it?
5. Do you know the password of the ISM7i?