Samsung AC052MN4DKH Service Manual

Also see for AC052MN4DKH: Installation manual

Troubleshooting4-48 Samsung Electronics15. Current sensor error : E468- Check the EEPROM data.- Check the PCB operation.16. IPM (IGBT Module) or PFCM temperature sensor error : E474IPM overheat error for outdoor unit inverter compressor : E500- Check whether IPM is correctly assembled on the heatproof plate.- Check whether the inlet is blockage.- If there is a defect, replace the IPM.17. How to check Booster Fan1) In case of do not not operate 1 Booster FanAction method : Remove the Booster Fan connector wire and cross-assembling the another Booster Fan wire andthen horizontally or intermediate or swing operate.Type ཰: When the existing Booster Fan does not operate, replace the Booster Fan.Type ཱ : If type 1 is not defective, Booster Fan Wire 4 (Red Wire),3 (Black Wire) pin voltage : When it is more than 2.7V, replace the PCB.2) In case of do not operate 3 Booster Fan (all Fan)Action method : horizontally or intermediate or swing set up.Type ཰: Booster Fan Wire 1 (Orange Wire), 3 (Black Wire) pin voltage : When it is less than DC12V, replace the PCB.Type ཱ : If type 1 is not defective, Booster Fan Wire 4 (Red Wire),3 (Black Wire) pin voltage : When it is more than 2.7V, replace the PCB.Type ི If type 2 is not defective, Booster Fan Wire 2 (White Wire),3 (Black Wire) pin voltage : When it is approximately 5V, replace the PCB.