Hi Guys, I have a Daikin FLXS50 With an Outdoor Unit RXS50. Power 230v ok, 30vdc on comms wire of outdoor to indoor with indoor comms wire disconnected, Indoor to outdoor 2vdc and a U4 Fault code- Indoor powers up and shuts down straight away-I suspect indoor pcb fault, drain clear-any suggestions would be appreciated. Powered down etc same fault
