ism7mqtt with Wolf CHA heat pump
Posted: Sunday 25 October 2026 0:17
This is the follow up of an off-topic discussion with @Ragdag in another thread.
viewtopic.php?p=336185#p336185
So let me outsource it to this separate topic. I am looking for a solution for a simple user like me to get data from my Wolf CHA07 heatpump via the communication module ISM7i. I notify hereafter my answers to questions, that @Ragdag already asked me:
Which Wolf network modules do you have: Link Home, ISM7i, ISM8i, or none?
-> ISM7i
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)?
--> CHA07 with BM-2 control display module
Which values would you most like to see in Domoticz?
--> actual power, consumed energy, amount of heat produced, number of cycles (compressor starts).
Which Domoticz version are you running?
--> currently 2026.4 (build 18479) beta or latest beta
When you tried ism7mqtt, do you remember where it got stuck?
--> Not really, it is more than one year ago. There where error messages in Linux (Raspi) even before I could get further.
Do you already have an MQTT broker running (for example Mosquitto)?
--> Yes, Mosquito is running and receiving data, for example via MQTT auto discovery
What does your Raspberry Pi show when you run this command in a terminal? That tells me which version you need.
--> armv7l
Is Docker installed on it? (No problem if not.)
--> No, Docker is not installed.
Do you use the Wolf Smartset app regularly, or could you live without it?
--> I use it regularly and I don't need to control the heat pump via Domoticz. My installing company is also using it for remote maintenance if necessary.
Do you know the password of the ISM7i?
--> Yes, I have the password.
viewtopic.php?p=336185#p336185
So let me outsource it to this separate topic. I am looking for a solution for a simple user like me to get data from my Wolf CHA07 heatpump via the communication module ISM7i. I notify hereafter my answers to questions, that @Ragdag already asked me:
Which Wolf network modules do you have: Link Home, ISM7i, ISM8i, or none?
-> ISM7i
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)?
--> CHA07 with BM-2 control display module
Which values would you most like to see in Domoticz?
--> actual power, consumed energy, amount of heat produced, number of cycles (compressor starts).
Which Domoticz version are you running?
--> currently 2026.4 (build 18479) beta or latest beta
When you tried ism7mqtt, do you remember where it got stuck?
--> Not really, it is more than one year ago. There where error messages in Linux (Raspi) even before I could get further.
Do you already have an MQTT broker running (for example Mosquitto)?
--> Yes, Mosquito is running and receiving data, for example via MQTT auto discovery
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 -mIs Docker installed on it? (No problem if not.)
--> No, Docker is not installed.
Do you use the Wolf Smartset app regularly, or could you live without it?
--> I use it regularly and I don't need to control the heat pump via Domoticz. My installing company is also using it for remote maintenance if necessary.
Do you know the password of the ISM7i?
--> Yes, I have the password.