Hitachi Home & Life Solutions India [Hhli] — Hitachi 1. 5 Ton Split AC HITACHI FREQUENT PCB CARD FAULTY

I have purchased Hitachi AC 1.5 ton AC in June 2022.
I am not a frequent AC user.
Still, there are 2 times that PCB board inside the outdoor unit has been replaced. Since it is in the warranty, it is replaced freely. But what after the warranty? The technician of service recommended a stabilizer, but company says no need. Then what should I follow?
I have informed to the company if there is a third time PCB problem within the short duration, then it will be a problem with your product.