I would appreciated any help I can receive regards with a Mitshubishi Inverter Split Wall Mount heat pump. Model Number FDKA 201

Unit has a hard wired remote controller

On starting the remote controller displayerd the following:

04
9F
Then 2 hand ( palm) symbols with the word, " WAIT " in between

Unit did not switch on, remained locked out. I rechecked all the connections, Power was ok at outdoor unit, and 240 v on interconnecting number 1

I checked all the XYZ connections on the remote to the indoor unit, All were fine.

Pressing the SW9 switch on the outdoor to initiate a test run produced nothing, although pressing the small white button on the indoor ( with japanese script) unit ran in cooling mode

Please help if anyone knows of this fault code

Regards
Abe