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9.3 Diagnosis and Solution
9.3.1 EEPROM parameter error diagnosis and solution(E0/F4)
Error Code
E0/F4
Malfunction decision
conditions
Indoor or outdoor PCB main chip does not receive feedback
from EEPROM chip.
Supposed causes
●
Installation mistake
●
PCB faulty
Trouble shooting:
Yes
Replace the indoor /outdoor
main PCB.
Power off, then restart the
unit 2 minutes later.
EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed
voltage. For the location of EEPROM chip, please refer to the below photos.
Indoor PCB
Outdoor PCB(18k model)
Note: The two photos above are only for reference, it’s may be not same totally with the ones on
your side.
Содержание WYC009AMFI20
Страница 7: ...5 2 2 Part names of Indoor Outdoor units ...
Страница 9: ...7 L mm R mm H mm Dimension of installation hole mm 100 mm 3 9in 95 mm 3 7in 45 mm 1 8in 65 mm 2 6in ...
Страница 13: ...11 5 Printed Circuit Board Connector Wiring Diagram of Outdoor unit ...
Страница 34: ...32 9 3 3 Zero crossing detection error diagnosis and solution E2 ...
Страница 42: ...40 P W N U ...
Страница 43: ...41 N V N W ...