H66 can emulate an installed IVT Rego 1000 CAN room controller (pictured below) for heating circuit one.

This can be used to forward any Room temp from a sensor in your home automation to the pump controller. It saves some money not having to buy a sensor and you can manage the temp level as you like. Note that you have to build this forwarding automation yourself. Husdata has no instructions for that currently.

The solution is in “beta” stage but has been tested on Rego 1000 controller version 3.6.0 and will probably work for later versions as well. However tests on 1.12.1 where not successfully.

How it works.
When enabled, H66 will send temperature to the Rego every 6:th second. If you change sensor-temperature via the H66 Web interface, MQTT or API, it will be sent to the Rego as current indoor temperature.

Please note that:
At H66 boot up, the temp will default to 20c until updated from your automation.

Also note that if the controller is not getting any update for 15 sec, it will throw an alarm on the display. The alarm is for Info only and will not disturb operations. The alarm will clear it self when communications is up again but you have to push the button on display to remove the message. So it is important to keep H66 operational to avoid alarms. If you update firmware in the H66 it will take too long time and an alarm will be shown for example. An normal restart of H66 will usually not cause an alarm.

You should not have both a real CAN room sensor installed in parallel with enabling H66 emulation. They will both send updates and conflict.

This emulation will only work with normal systems having ONE heating circuit, not two or more.

How to set it up.

Enable the setting “ROOM CTRL” by setting it to 1 in H66 settings.
Restart H66.
Check the display at pump, a room temp should now be shown in the “house”.

Now you are done, you can test to change the 02F1 setting from web interface and test that display changes on pump. For more info on how Room Program works, read the user manual for the heat pump.

If you want to revert this and go back to not using room sensor you must go into the service menu and set room sensor confirmed to NO.

Lastly you can now start building you automation from Home Assistant or other solution.
Note that if you use Rest API you must supply the temperature times 10. So if you want to set 22 degrees, send 220. This is not applying to MQTT.