Hitachi split timer LED 10 flash

[paul_h]

I've got a hitachi wall mount split system here, an RAS-72CHA3.
Unit cuts out and the timer flashes 10 times.
Anyone know what that means?
Indoor fan speed is erractic, compressor seems to cut in and out.

This is a non paying job for me so far, so I didn't rip it apart and check anything. I've never worked on hitachi so wouldn't know where to start.

I was only there to repair a drain leak in the roof, as the unit looks newish it may be under warranty if the can find out the purchase date, so there isn't any point to me working on it yet.
I'm just asking what that fault code might possible mean in case they can't find anyone else to repair it.

Edit: I've searched, but all the links to hitachi fault codes given out before in this forum are dead

edit: I have a manual for a different model split, and it says indoor fan motor trouble causes 10 LED flash.
It may be the case here, as the fan motor seems to run erratically. But, I tested in fan only mode and it seemed to run OK, but it died after running on cooling mode.

Anyone familiar with these ACs, anyone know if the fan fault is the motor or the PCB, or both? How to test either of them.

Finally, anyone in australia know where to get hitachi parts?