I am afraid you are out of luck… as long as you cannot get a response from the heat pump using your PC and a browser my Homey app will also not work. This also means that if you want to trouble shoot your situation all you need is your PC and a browser.
A note from the user manual…
Not all Daikin airconditioner models / model series / combinations of indoor and outdoor units are supported. Due to the fact that Daikin does not disclose their interface specification reverse engineering of the interface is extremely difficult.
