Samsung · Split air conditioners · Samsung WindFree AR50F / AR60F / AR70F (wall-mounted split, R32)
C478Fan IPM over current (O.C) error
Name in the manufacturer's documentation (service manual): Fan IPM over current (O.C) error
[1]
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For technicians
Steps given by the manufacturer (source text)
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Sources
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- [1] Samsung – Split-type Air Conditioner Service Manual (indoor AR50F/AR60F/AR70F…C1A…NEU, outdoor …XEU), „GEO WIND FREE EU RS9 25R” (RS9 25R (2025-10-01, wg nazwy pliku)) , p. 20 manufacturer document – copy from a distributor quote verified
C478
- [2] Samsung – Split-type Air Conditioner Service Manual (indoor AR50F/AR60F/AR70F…C1A…NEU, outdoor …XEU), „GEO WIND FREE EU RS9 25R” (RS9 25R (2025-10-01, wg nazwy pliku)) , p. 95 manufacturer document – copy from a distributor quote verified
is the ipm shunt resistance value correct? check if the resistor is open
- [3] Samsung – Split-type Air Conditioner Service Manual (indoor AR50F/AR60F/AR70F…C1A…NEU, outdoor …XEU), „GEO WIND FREE EU RS9 25R” (RS9 25R (2025-10-01, wg nazwy pliku)) , p. 95 manufacturer document – copy from a distributor quote verified
is the condition of the surrounding temperature leading to an abnormal overload?
- [4] Samsung – Split-type Air Conditioner Service Manual (indoor AR50F/AR60F/AR70F…C1A…NEU, outdoor …XEU), „GEO WIND FREE EU RS9 25R” (RS9 25R (2025-10-01, wg nazwy pliku)) , p. 95 manufacturer document – copy from a distributor quote verified
is there any problem like the temperature sensor separation or measurement value error?
- [5] Samsung – Split-type Air Conditioner Service Manual (indoor AR50F/AR60F/AR70F…C1A…NEU, outdoor …XEU), „GEO WIND FREE EU RS9 25R” (RS9 25R (2025-10-01, wg nazwy pliku)) , p. 95 manufacturer document – copy from a distributor quote verified
is the interphase resistance of fan normal?