Daikin vev11 REYQ16M7W18 hi back with a new problem?

[cryotec]

had J2 current Sensor so i changed it and contactor on std2. compressor run current is 6A
Had to inhibit std2 for unit to run
i think it is main board should i be looking at some thing ales?

[cryotec]

can some one direct me to where i can get cheep or 2nd hand board as i can do so much out of my pocket for the charity all help appreciated