I have just been advised by a tech that the code presented on this unit has a code H27? in short the compressor is dead. He suggested I buy another split air conditioner as it wasn't worth repairing. Is the tech right with his diagnosis or can I replace the compressor. This unit is 10 years old and only used been usedon extreme temperature days . The compressor died on a day the temperature was 38-40 degrees celcius.