I have just installed a daikin split ducted and am having problems with the setup process. The units are a RQ200KY1 / FDYQN200KV1.I have wired it up as follows. Three phase supply to ODU, Single phase supply picked up from the three phase on the ODU and run via a circuit breaker to terminal block on IDU, pair wires from F1/F2 on ODU to F1/F2 on indoor unit and a shielded pair from terminals P1/P2 on indoor unit supplying 16 volt supply to stat ( BRC1D61 ). The problem I am having is that I am unable to get the stat to operate the unit. It has a UH fault that I am unable to clear, the icon indicating that the stat is being over riden is displayed and the green LED on the outdoor unit pcb is indicating that the unit is operating as a multi split. Any suggestions would be appreciated.