1
0
.4.2 EEPROM abnormal
Indoor Display E4:
Indoor EEPROM error
Indoor display F12:
Outdoor EEPROM error; Outdoor LED1 flash 1 times
Method of The Data detected by the EEPROM are used to determine MCU
Malfunction
Detection
Malfunction When the data of EEPROM is error or the EEPROM is damaged
Decision
Conditions
Supposed
Ŷ
Faulty EEPROM data
Causes
Ŷ
Faulty EEPROM
Ŷ
Faulty PCB
Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector, or
parts damage may be occurred.
Replace the indoor or outdoor mainboard.
Service diagnosis
Domestic air conditioner
36
Summary of Contents for 2U50S2SF1FA
Page 11: ...Pinping diagrams Domestic air conditioner 4 Pinping diagrams 9 ...
Page 12: ...Domestic air conditioner 5 Operation range 10 Introduction ...
Page 83: ...Domestic air conditioner Removal of procedure 11 s t n i o P e r u d e c o r P p e t S 2 ...
Page 84: ...Domestic air conditioner Removal of procedure 12 s t n i o P e r u d e c o r P p e t S 3 ...