Service manual
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9.2 Indoor Unit Error Display
Display STATUS
E1 EEPROM error
E2 Zero-crossing examination error
E3 Fan speed beyond control
E4 Over current protection of the compressor occurs 4 times
E5 Open or short circuit of Room temperature sensor
E6 evaporator temperature sensor open or short circuit of
9.3 Diagnostic chart
After energizing, no indicator is lighted and the air conditioner can’t be operated.