Service diagnosis
30
Domestic air conditioner
10.3.2 EEPROM abnormal
Indoor Display
E4: Indoor EEPROM error
Indoor display
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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
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Faulty EEPROM data
Causes
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Faulty EEPROM
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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.
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Summary of Contents for AS09TH3HRA
Page 12: ...Piping diagrams Domestic air conditioner 5 Piping diagrams 10 ...
Page 14: ...Printed circuit board connector wiring diagram 12 Domestic air conditioner PCB ...
Page 53: ...4 Step Procedure Points 1 2 Release the screw covers 3EA Loosen the marked Screw 4EA ...
Page 58: ...9 Step Procedure Points 3 Release the fixture plate from the base frame hook and remove it ...