Ok, this is an update on the troublesome LG Air Con.

I rang LG Distribution boffin with symtoms...........Guess what ??? He said wire the condenser fan direct !!!! He even sent me a wiring diagram..........Well, well........

That fan kicking in and out must have played hell with both back and high pressures......and the scroll compressor

Anyway, I put in a "fresh" charge of refrigerant......bypassed condenser fan...........and this is what I get.

Outdoor Unit

Air on 29C
Air Off 37C

Back Pressure ..........Steady on 60 Psi

Indoor Unit Air On 24 C
Air Off 7.6C

Customer says............Wow its cold in here!!!

The outdoor unit, tripped, cut off once, completely
But after that stayed on..........and ran

So we will see what happens, The LG guy says indoor unit air off must be no lower then 12C

Im getting 7.6C. Is he right?????
He said any lower then 12C and the coil will ice up.
Well on some of my units it gets to 5C and lower...

What Ive learnt.......from this

I dont think LG and R407C make good company. The way they have designed their systems dont seem to work in harmony, thats my view.

Hey Mark, fancy letting me have some of your Daikins at your preferential new prices????