Sharp AF-08CRL Service Manual - Page 29

Insufficient cooling(Both compressor and compressor operate) too high Check the temperature setting. OK Set the lower temperature. Check the air filter. not dirty dirty Clean the air filter. Is there high heat source or any object restricting heat radiation near the unit. there isn't there is Remove the high heat source or stop. Check doors and windows. close open Doors and windows must be kept closed. Check the outdoor and indoor dirty heat exchanger. not dirty Clean them with steam cleaner or another method. Calculate heat load wit using Cooling load estimate form. OK Check rotating direction of centrifugal fan.(to clockwise) OK Check changing fan speed properly. OK Undersized air conditioner Change unit to proper sized air conditioner. NG NG Check the fan motor connector. NG OK Measure the resistance NG of fan motor coil. OK Change the fan motor. Connect properly. AF-08CRL Is the outdoor temperature too high ? under 40˚C over 40˚C Avoid sun light and ventilate well for outdoor heat exchanger. Check the thermister. NG OK Change the thermister. Measure temperature difference under 10˚C between inlet and outlet air at indoor. over 10˚C Is frost sticking to capillary tube ? Or is indoor heat exchanger no cold ? NO Checking complete. YES Is the refrigerant leaked ? NO The capillary tube restrict, and change the capillary tube. YES Repair leakage and recharge the refrigerant. Measure the emperature difference between discharge tube and suction tube. No temperature difference The compressor is defective. temperature difference Change the compressor. 29