Brand new 2.6 Kw LG High Wall heat pump invertor install.
Model Number SO9AW

On start up liquid Expansion Device, located directly behind compressor, humms and attempts to energise, hammering in and out a few times.

Compressor locks out.....fan does not operate.

Compressor winding check out again. 1 Ohm

Board LED flashes 10 times

Error code is high pressure thermistor which is fixed to discharge pipe.

Why is this expansion device hammering in and out??

Is it just a thermistor fault??

Should I ask LG to supply all electronic kit, inc pcb board?
As it is a brand new installation............

or........another outdoor unit??