I'd be suspicious about the driver unit (sealed black box bolted on to the side of the valve block).

If you ask nicely on here, you might find a fellow Perth-ian who has a spare driver unit you can borrow to test with yours... or even swap their own in. Only takes 10-15 mins to swap out.

Check the compressor thermal switch by doing a continuity test with a multimeter across the orange and black wires. If no continuity, the switch needs replacing.

There is definately a logic fault somewhere. The EAS shoud go in to fault within 10 minutes if it cannot reach the target height.

Cheers, Paul.