H00 No memory of failure
H11 Indoor / outdoor abnormal communication
H12 Indoor unit capacity unmatched
H14 Indoor intake air temperature sensor abnormality
H15 Compressor temperature sensor abnormality
H16 Outdoor current transformer abnormality
H17 Outdoor suction temperature sensor abnormality
H19 Indoor fan motor mechanism lock
H21 Indoor float switch operation abnormality
H23 Indoor heat exchanger temperature sensor 1 abnormality
H24 Indoor heat exchanger temperature sensor 2 abnormality
H25 Indoor ion device abnormality
H26 Minus ION abnormality
H27 Outdoor air temperature sensor abnormality
H28 Outdoor heat exchanger temperature sensor 1 abnormality
H30 Outdoor discharge pipe temperature sensor abnormality
H31 Abnormal swimming pool sensor
H32 Outdoor heat exchanger temperature sensor 2 abnormality
H33 Indoor / outdoor misconnection abnormality
H34 Outdoor heat sink temperature sensor abnormality
H35 Indoor / outdoor water adverse current abnormality
H36 Outdoor gas pipe temperature sensor abnormality
H37 Outdoor liquid pipe temperature sensor abnormality
H38 Indoor / outdoor mismatch (brand code)
H39 Abnormal indoor operating unit or standby units
H41 Abnormal wiring or piping connection
H50 Ventilation fan motor locked
H51 Ventilation fan motor locked
H52 Left-right limit switch fixing abnormality
H58 Indoor gas sensor abnormality
H59 Eco sensor abnormality
H64 Outdoor high pressure sensor abnormality
H67 nanoe abnormality
H70 Light sensor abnormality
H71 DC cooling fan inside control board abnormality
H72 Abnormality tank temperature sensor
H79 Wireless LAN module write error
H85 Abnormal communication between indoor and wireless LAN module
H97 Outdoor fan motor mechanism lock
H98 Indoor high-pressure protection
H99 Indoor operating unit freeze protection
F11 4-way valve switching abnormality
F16 Total running current protection
F17 Indoor standby units freezing abnormality
F18 Dry circuit blocked abnormality
F87 Control box overheat protection
F90 Power factor correction (PFC) circuit protection / system and compressor microcomputer communication error
F91 Refrigerant cycle abnormality
F93 Compressor abnormal revolution
F94 Compressor discharge pressure protection
F95 Outdoor cooling high pressure protection
F96 Power transistor module overheating protection
F97 Compressor overheating protection
F98 Total running current protection
F99 Outdoor direct current (DC) peak detection
C01 Duplicate central-address setting
C02 Central-control equipment count mismatch
C03 Central-control equipment wiring error
C04 Incorrect central-control equipment connection
C05 Central-control equipment transmission fault
C06 Central-control equipment reception fault
C12 Collective alarm from the local adapter
C13 Communication error between the indoor unit and S-LINK adapter
C16 Adapter transmission fault to connected equipment
C17 Adapter reception fault from connected equipment
C18 Duplicate central address within the adapter
C19 Duplicate adapter address or system address
C20 PAC and GHP equipment are mixed within the adapter
C21 Adapter EEPROM fault
C22 Adapter-address setting fault
C23 Host-terminal software fault
C24 Host-terminal hardware fault
C25 Host-terminal processing fault
C26 Internal host-terminal communication fault
C28 S-DDC reception fault from the host
C29 S-DDC initial-communication fault
C31 System configuration has changed
E01 Remote controller cannot receive signals from the indoor unit
E02 Remote controller cannot transmit signals to the indoor unit
E03 Indoor unit cannot receive signals from the remote or central controller
E04 Indoor unit cannot receive signals from the outdoor side
E05 Indoor unit cannot transmit signals to the outdoor side
E06 Outdoor unit cannot receive signals from the indoor side
E07 Outdoor unit cannot transmit signals to the indoor side
E08 Duplicate indoor-unit address setting
E09 More than one remote controller is set as master
E10 DC fan-driver communication fault
E11 Indoor-unit reception fault from the signal-output PCB
E12 Automatic addressing blocked by active addressing or evacuation/vacuuming
E13 Indoor unit cannot transmit signals to the remote or central controller
E14 Duplicate master-unit setting within group control
E15 Automatic-address alarm: too few indoor units or too little capacity responded
E16 Automatic-address alarm: too many indoor units or too much capacity responded
E17 Indoor-unit-to-indoor-unit transmission fault
E18 Group-control wiring or indoor-unit communication fault
E19 Three or more master units were detected in one system
E20 Automatic-addressing setup, wiring, or indoor-unit detection fault
E21 Linked-outdoor master cannot receive from follower on equipment-use models
E22 Linked-outdoor follower communication, power wiring, or phase-loss fault
E23 Inter-outdoor-unit wiring transmission fault
E24 Inter-outdoor-unit communication fault: the master cannot receive from a follower
E25 Duplicate outdoor-unit address setting
E26 Outdoor-unit count mismatch
E27 Incorrect inter-outdoor-unit wiring or combined outdoor capacity exceeds 54 HP
E28 Incorrect outdoor-unit connection
E29 Inter-outdoor-unit communication fault
E30 Outdoor-unit serial transmission fault
E31 Outdoor main-control to inverter-drive communication fault
F01 Indoor/water heat-exchanger or ice-storage inlet sensor fault
F02 Indoor/water heat-exchanger, freeze, or subcooling-liquid sensor fault
F03 Indoor/water heat-exchanger or ice-storage outlet sensor fault
F04 Compressor 1 discharge-temperature sensor fault
F05 Compressor 2 discharge-temperature sensor fault
F06 Outdoor heat-exchanger sensor fault (single C1 or multi gas inlet)
F07 Outdoor heat-exchanger sensor fault (single C2 or multi liquid outlet)
F08 Outdoor-air temperature sensor fault
F09 Scroll protection or cooling-water/refrigerant sensor fault
F10 Indoor-air, water, thermal-storage, or room-temperature sensor fault
F11 Indoor discharge/water-outlet sensor fault or refrigerant sensor expired
F12 Compressor suction-temperature sensor or receiver-temperature fault
F14 Subcooling-gas temperature sensor fault
F15 Subcooling-liquid temperature sensor fault
F16 High-pressure protection, high-pressure sensor fault, or overload operation
F17 Low-pressure sensor or optional-sensor fault
F21 Compressor 3 current-sensor fault
F22 Compressor 3 discharge-temperature sensor fault
F23 Outdoor heat-exchanger 2 gas-inlet temperature sensor or cascade-gas sensor fault
F24 Outdoor heat-exchanger 2 liquid-outlet temperature sensor or cascade-liquid sensor fault
F27 Compressor 1 current-sensor fault
F28 Compressor 2 current-sensor fault
F29 Indoor-unit EEPROM fault
F31 Outdoor-unit EEPROM fault
H01 Compressor 1 current fault (overcurrent)
H02 Compressor 1 current fault (locked rotor) or PAM fault
H03 Compressor 1 current-sensing, short-circuit, or power fault
H05 Compressor 1 protection-thermostat or discharge-sensor fault
H06 Abnormally low pressure or low-pressure switch operation
H07 Compressor no-oil fault
H08 Oil-sensor connection fault
H09 Multi system: electromagnetic contactor 1 chattering
H10 Crankcase-heater sensor 1 fault
H11 Compressor 2 current fault (overcurrent)
H12 Compressor 2 current fault (locked rotor)
H13 Compressor 2 current-sensing, short-circuit, or power fault
H14 Compressor 2 scroll-protection thermostat fault
H15 Compressor 2 discharge-temperature sensor disconnected or faulty
H16 Compressor 2 no-oil fault
H17 Power-supply voltage imbalance detected
H18 Single system: electromagnetic contactor 1 chattering
H19 Multi system: electromagnetic contactor 2 chattering
H20 Crankcase-heater sensor 2 fault
H21 Compressor 3 overcurrent, compressor 2 HIC trip, or DC-voltage fault
H22 Compressor 3 current fault (locked rotor)
H23 Compressor 3 CT sensor disconnected, no current detected, sensor fault, or short circuit
H24 Compressor 3 scroll-protection thermostat fault
H25 Compressor 3 discharge-temperature sensor disconnected or faulty
H26 Compressor 3 no-oil fault
H27 Compressor 2 oil-sensor connection fault
H28 Compressor 3 oil-sensor connection fault
H29 Multi system: electromagnetic contactor 3 chattering
H30 Crankcase-heater sensor 3 fault
H31 Compressor 1 HIC trip or DC-voltage fault
J01 External refrigerant-sensor fault
J02 Refrigerant-sensor fault
J03 Built-in refrigerant sensor 1 fault
J04 Built-in refrigerant sensor 1 service life exceeded
J05 Built-in refrigerant sensor 2 fault
J06 Built-in refrigerant sensor 2 service life exceeded
J20 DC-voltage fault (inverter input voltage)
J22 DCCT fault (inverter-compressor current sensor)
J24 Compressor reverse-phase condition detected
J26 Compressor phase-loss condition detected
L01 Indoor-unit address fault: master unit not detected
L02 Indoor- and outdoor-unit model mismatch
L03 More than one master unit is set in group control
L04 Duplicate outdoor-unit address setting
L05 Duplicate priority setting for wired indoor units
L06 Duplicate priority reported for a non-priority indoor unit
L07 Group-control wiring is connected to an individually controlled indoor unit
L08 Address or group setting is missing
L09 Indoor-unit capacity is not set
L10 Outdoor-unit capacity is not set
L11 Group-control wiring is incorrect
L12 Indoor-unit capacity mismatch
L13 Indoor-unit model setting fault
L14 Power-supply frequency mismatch (50/60 Hz)
L17 Outdoor-unit model mismatch
L18 Solenoid-valve kit or four-way-valve operation fault
L20 Duplicate indoor-unit central address
P01 Indoor fan fault
P02 Compressor protection or case-temperature sensing fault
P03 Compressor 1 discharge-temperature fault
P04 High-pressure switch operated (refrigerant pressure-switch fault)
P05 Power phase, refrigerant, current-sensor, or reactor-wiring fault
P06 Model or capacity combination fault
P07 DC overcurrent or heatsink fault
P08 Refrigerant-leak sensor alarm
P09 Indoor-unit ceiling-panel connector fault or low-water alarm (water below the reference level)
P10 Indoor-unit float-switch or high-water alarm (water above the reference level)
P11 Freeze alarm or DC drain-pump fault
P12 Low-water alarm-cancel connector fault or indoor-unit DC fan fault
P13 Valve fault or service valve left closed
P14 O2 sensor operated
P15 Complete loss of refrigerant
P16 Inverter-compressor overcurrent (multi system: compressor 1 DCCT/ACCT)
P17 Compressor 2 discharge temperature abnormally high
P18 Compressor 3 discharge temperature abnormally high
P19 Four-way-valve operation fault
P20 High load during cooling or service valve left closed
P22 Outdoor fan fault (overcurrent, inverter fault, or DC fan lock)
P24 Ice thermal-storage unit alarm
P25 Compressor high-pressure protection
P26 Inverter-compressor HIC-circuit fault: no DC voltage detected
P27 Compressor low-pressure protection
P29 Inverter-compressor start failure, lock, or CT-circuit fault
P30 Follower-unit fault in indoor group control
P31 Indoor group-control fault, or another indoor unit on the FLEX system has an alarm
E15 Grouped PACi NX indoor units are missing the required R1/R2 remote-controller connection
E20 A prohibited communication-terminal connection in a PACi NX twin or multi combination prevents automatic addressing from completing