Can someone supply me with the fault codes and any other information which may help me to get the system to operate ?

I have a Sanyo Cr90 3GYHB outdoor system with 10 indoor fan coils connected to it

The main outdoor PCB failed so a new board was fitted but now the central controller shows E 04 fault and the
Outdoor shows LEDs no. D138 plus Leds 1 and 2 flashing !

I have re,booted all the indoors units and outdoor,plus all voltages seem Ok

thanks bobjob