Hi i need some help here, im having problem with my car aircond.. on below im showing you about what's wrong..




Part Morning Afternoon Night
A 100% 100% 100%
B 100% 100% 100%
C 70% 10% 70%
D 70% 10% 70%




The percentage above which is showing the cool air coming out from the parts.. which means the C, D part isn't working properly in the afternoon which makes me annoying and sweat badly all the journey.. as i have already service my aircond last 3 months and the technician can't help me to solve it and just ask me to refill the gas and use it for months.. i went back to him today and he told me the same thing asking me for refill the gas.. he ask me to leave the car for a day and they gonna fix it but have to cost RM700+.. i just want to know what's the problem and need to fix it.. and mostly ppl will ask me to refill but not to check it properly.. anyone know how do i fix this thing up? roughly how much should it cost?