Daikin VRV 111

Hi Guys,
Really hope someone has come across this before (literally pulling hair out) I have a pair of Daikin VRV 111, one master one slave, am getting an LC fault code (communication error) Master unit will run but slave will not, speaking to Daikin help desk it could be Main, inverter, noise or Fan PCB oh yes or the Inverter compressor :confused: checked all three comps all good, because I have a lot of spares I have replaced all but the main PCB, even though all PCB's had green lights flashing and none on removal had burn outs or blown fuses!!! still getting no joy, have checked ALL cables none loose, spoke to Daikin again and one guy said it could be the fan motors??? seems like they have a tick box to go through with every fault possible, in case any Daikin guys out there sorry you are a great help but I cant change everything on the unit. Pleeeease help.

Same fault this week was condenser fan motors and PCB hope this helps

Thanks Scoffs, have ordered a main PCB and have two new fan motors, I'll post to let you know how I get on.