DEBUGGING & MAINTENANCE
1 Malfunction List
1.1 Error
Code of Protection
Error Item
Indoor Unit
Display
Indoor fan protection L1
Water overflow protection L3
Anti-freeze protection L5
Indoor ambient temperature sensor error d3
Indoor coil inlet temperature sensor error d4
Indoor mid-coil temperature sensor error d5
Indoor coil outlet temperature sensor error d6
Indoor humidity sensor error d7
Jumper error d9
Outdoor ambient temperature sensor error b1
Outdoor heat-exchanger coil outlet
b3
Vapor-liquid separator inlet temperature
sensor error
b6
High pressure protection E1
Low pressure protection E3
Discharge protection E4
Refrigerant-lacking protection E0
Compressor power protection E0
Intermediate vapor injection temperature
E0
EEPROM read-write error F0
High pressure sensor error F1
Middle pressure sensor error E0
Low pressure sensor error F3
Discharge temperature sensor error F6
High pressure switch E0
AC over current P0
IPM over current protection E0
IPM module overheat P0
Desynchronizing protection P0
for North America
Photovoltaic Direct-driven VRF
60
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