Version 1.5.1 is now available.
The number of compressor starts have been added to the capabilities. This can be a good indication of the health(lifespan) of the heat pump. Some display handling has been done for unsupported capabilities. A nice ‘-’ is displayed instead of -32768.
We have also added support for heat pumps with the WPM 3i protocol. And renamed all devices to their supported protocol. Currently there are three supported protocols (devices):
WPMSystem / WPM 4
This is the current standard for modern, modulating (inverter) systems and offers the most integration options.
Supported Series:
- WPL-A 07/10/13 HK Premium: The current flagship monoblock air-to-water series.
- WPL 09/17 ICS/IKCS: Air-to-water heat pumps designed for indoor installation.
- WPE-I 04 - 15: The latest inverter-driven brine-to-water units.
- HSBC 200/300: Integral cylinder stations (these contain a WPMSystem controller internally).
WPM 3i (Build-in controller)
The ‘i’ stands for integrated. This controller is technically similar to the WPM 3 but is physically built into the housing of the heat pump unit itself.
Supported Series:
- WPF 04 - 13 (cool): Modern, compact brine-to-water heat pumps.
- WPL 07 - 17 ACS classic: Entry-level inverter air-to-water heat pumps.
LWZ/LWA Systems
Unlike the modular WPM systems, the LWZ protocol in the ISG provides access to specific ventilation parameters (such as fan stages and humidity levels) alongside standard heating curves.
Supported Series:
- LWZ 303 / 403 Series
- LWZ 304 / 404 / 504 Series (Better efficiency)
- LWZ 5 & 8 CS Series (Modern inverter generation)
The device ‘ISG Web Interface (Old)’ is still there for legacy installs but ideally should not be used and might be removed later on.
If you are not sure what protocol your heat pump is using, install the WPMSystem / WPM 4 device. This is the latest protocol and used in the latest heat pumps. You can then check the Controller Type capability. It will display the supported protocol:
