27
Installation and Maintenance
Service Manual
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Name of malfunction
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Indoor display
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Compressor runs
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Defrost
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H1
Anti-freezing protection
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E2
IPM protection
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H5
AC over-current protection
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E5
Over-burden protection
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H4
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E4
Compressor overload protection
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H3
Power protection
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L9
EEPROM reads and write protection
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Low PN voltage protection
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Over voltage protection for PN
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Low pressure protection
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E1
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Outdoor ambient sensor malfunction
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Outdoor tube sensor malfunction
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Outdoor fan malfunction
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Gas pipe temperature sensor malfunction of A
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Gas pipe temperature sensor malfunction of B
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Gas pipe temperature sensor malfunction of C
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Gas pipe temperature sensor malfunction of D
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Gas pipe temperature
sensor malfunction of E
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Correspondence is normal
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Communication failure between indoor unit and
outdoor unit
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indoor unit all Communication failure)
Indoor ambient sensor malfunction
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Indoor evaporate sensor malfunction
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Jumper cap malfunction protection
C5
9.1 Malfunction Indicator
9. Troubleshooting
