Sangeetha Chennai — Ac with error code F0 - problem exists right from the beginning we bought Bluestar inverter AC

We bought around 5 AC - blue star 2 ton 1AC, 1.5 ton 2 AC's and 1 1 tone 2 AC's
Out of which 3 got the board replacement which was done last year and 1 AC was having issue right from the beginning with FO error
Compliant was raised many many time but stil the issue is not resolved also reached the AC dealer where we bought it
Still no use except waste of time and efforts
No one is effectively fixing or resolving the AC problem till today.

WE spent too much money on repairing the 4 AC's
Sangeetha
Chennai