SiUS12-814 TroubleshootingService Diagnosis 1475.23 Radiation Fin Temperature RiseRemoteControllerDisplayL4Outdoor Unit LEDDisplayA 5 1 1 2 1 3 1 4 4Method ofMalfunctionDetectionA radiation fin temperature rise is detected by checking the radiation fin temperature being detectedby the fin thermistor with the compressor on.MalfunctionDecisionConditions The radiation fin temperature with the compressor on is above 194°F (18 class) or 221°F (32class). The error is cleared when the temperature drops below 185°F (18 class) or 206.6°F (32 class). If a radiation fin temperature rise takes place 255 times successively, the system will shutdown. The error counter will reset itself if this or any other error does not occur during the following 60-minute compressor running time (total time).SupposedCauses Fin temperature rise due to defective outdoor unit fan Fin temperature rise due to short-circuit Fin thermistor defective Connector in poor contact Outdoor unit PCB defective Silicon grease is not applied properly on the heat radiation fin after replacing outdoor unit PCB
