Mitsubishi Air pump controlller interface

has anyone had and experience with using HA to control CH temperature on a Mitsubishi Air pump control system.. My partner had a system installed a few years ago , and a remote control was never supplied and she has request ignored by the installer . Hence maybe HA could be a possibility.???/

What are the model numbers of the units in the Mitsubishi system?

After further investigating, the system was installed by a cowboy company who are now bust and never installed the wireless interface, , so now a few hundred pound to get that installed.