01 / upper lamp 0.5s Miswiring or serial signal
02 / upper lamp 2x Indoor coil thermistor or room temperature thermistor
03 / upper lamp 3x Indoor fan motor
04 / upper lamp 4x Indoor control system
05 / upper lamp 5x Outdoor power system
06 / upper lamp 6x Outdoor thermistors
07 / upper lamp 7x Outdoor control system
08 / upper lamp 14x+ Other abnormality
09 / upper lamp lit Outdoor control system
01 / operation indicator 0.5s Miswiring or serial signal
02 / operation indicator 2x Indoor thermistor
03 / operation indicator 3x Fan motor
04 / operation indicator 4x Indoor control system
05 / operation indicator 5x Outdoor power system
06 / operation indicator 6x Outdoor thermistor
07 / operation indicator 7x Outdoor control system
08 / operation indicator 14x+ Other outdoor abnormality
FR00 / recall upper lamp off Normal or no recalled indoor abnormality
FR01 / recall upper lamp 1x Room temperature thermistor short or open
FR02 / recall upper lamp 2x Indoor coil thermistor short or open
FR03 / recall upper lamp 3x Serial signal from outdoor unit not received
FR11 / recall upper lamp 11x Indoor fan motor feedback signal missing
FR12 / recall upper lamp 12x Indoor control PCB nonvolatile memory read fault
FR13 / all lamps 0.5s Horizontal vane not installed correctly
TR01 / upper lamp 0.5s Miswiring or serial signal
TR02 / upper lamp 2x Indoor coil thermistor or room temperature thermistor
TR03 / upper lamp 3x Indoor fan motor
TR04 / upper lamp 4x Indoor control system
TR05 / upper lamp 5x Outdoor power system
TR06 / upper lamp 6x Outdoor thermistors
TR07 / upper lamp 7x Outdoor control system
TR08 / upper lamp 14x+ Other outdoor abnormality
TR09 / upper lamp lit Outdoor control system
01 / LED 1x Outdoor power system
02 / LED 1x Outdoor thermistors
03 / LED 1x Outdoor control system
04 / LED 6x Serial signal
05 / LED 11x Stop valve or closed valve
06 / LED 14x Outdoor unit other abnormality
07 / LED 16x Pipe temperature
08 / LED 17x Outdoor refrigerant system abnormality
09 / LED 2x Overcurrent protection
10 / LED 3x Discharge temperature overheat protection
11 / LED 4x Fin temperature or P.C. board temperature thermistor overheat protection
12 / LED 5x High pressure protection
13 / LED 8x Compressor synchronous abnormality
14 / LED 10x Outdoor fan motor
15 / LED 12x Each phase current of compressor
16 / LED 13x Bus-bar voltage
17 / LED 1x Frequency drop by current protection
18 / LED 3x Frequency drop by defrosting in cool mode
19 / LED 4x Frequency drop by discharge temperature protection
20 / LED 5x Outside temperature thermistor protection
21 / LED 7x Low discharge temperature protection
22 / LED 8x PAM protection or zero-cross detecting circuit
23 / LED 9x Inverter check mode
01 / LED1 lit, LED2 once LEV and drain pump Result 1 of 2 with this code and meaning. Expand for model and series details.
02 / LED1 lit, LED2 2x Outdoor power system Result 1 of 2 with this code and meaning. Expand for model and series details.
03 / LED1 lit, LED2 3x Discharge temperature thermistor Result 1 of 2 with this code and meaning. Expand for model and series details.
04 / LED1 lit, LED2 4x Fin temperature or P.C. board temperature thermistor Result 1 of 2 with this code and meaning. Expand for model and series details.
05 / LED1 lit, LED2 5x Ambient temperature or outdoor heat exchanger temperature thermistor Result 1 of 2 with this code and meaning. Expand for model and series details.
06 / LED1 lit, LED2 7x Nonvolatile memory data
07 / LED1 lit, LED2 17x Outdoor refrigerant system abnormality
08 / LED1 off, LED2 off Thermal protector protection or locked compressor
09 / LED1 2x, LED2 off Overcurrent
10 / LED1 3x, LED2 off Discharge temperature protection
11 / LED1 4x, LED2 off Fin temperature or P.C. board temperature protection
12 / LED1 5x, LED2 off High pressure protection
13 / LED1 9x, LED2 off Bus-bar voltage protection
14 / LED1 13x, LED2 off Outdoor fan motor
15 / LED1 8x, LED2 off Current sensor protection
16 / LED1 10x, LED2 off Compressor
17 / LED1 once, LED2 lit Primary current protection
18 / LED1 2x, LED2 lit Secondary current protection
19 / LED1 3x, LED2 lit Discharge temperature protection
20 / LED1 4x, LED2 lit Low discharge temperature protection
21 / LED1 5x, LED2 lit Cooling high pressure protection
22 / LED1 8x, LED2 lit Converter protection
23 / LED1 7x, LED2 lit Cooling evaporating temperature protection
24 / LED1 9x, LED2 lit Inverter check mode
25 / LED1 lit, LED2 lit Normal
01 / LED1 lit, LED2 once LEV and drain pump Result 2 of 2 with this code and meaning. Expand for model and series details.
02 / LED1 lit, LED2 2x Outdoor power system Result 2 of 2 with this code and meaning. Expand for model and series details.
03 / LED1 lit, LED2 3x Discharge temperature thermistor Result 2 of 2 with this code and meaning. Expand for model and series details.
04 / LED1 lit, LED2 4x Fin temperature or P.C. board temperature thermistor Result 2 of 2 with this code and meaning. Expand for model and series details.
05 / LED1 lit, LED2 5x Ambient temperature or outdoor heat exchanger temperature thermistor Result 2 of 2 with this code and meaning. Expand for model and series details.
06 / LED1 lit, LED2 6x Zero cross detecting circuit on outdoor control P.C. board
07 / LED1 lit, LED2 7x Outdoor control system
08 / LED1 lit, LED2 8x Current sensor
09 / LED1 lit, LED2 11x Communication error between P.C. boards
10 / LED1 lit, LED2 12x Zero cross detecting circuit on outdoor power P.C. board
11 / LED1 lit, LED2 13x Current sensor
12 / LED1 lit, LED2 14x Voltage sensor
13 / LED1 lit, LED2 15x Relay operation
14 / LED1 2x, LED2 off IPM protection or lock protection
15 / LED1 3x, LED2 off Discharge temperature protection
16 / LED1 4x, LED2 off Fin temperature or P.C. board temperature protection
17 / LED1 5x, LED2 off High pressure protection or thermal protector protection
18 / LED1 6x, LED2 off Pre-heating protection
19 / LED1 8x, LED2 off Converter protection
20 / LED1 9x, LED2 off Bus-bar voltage protection
21 / LED1 11x, LED2 off Low outside temperature protection in cooling
22 / LED1 13x, LED2 off Outdoor fan motor
23 / LED1 lit, LED2 8x Current sensor protection
24 / LED1 lit, LED2 11x Communication between P.C. boards protection
25 / LED1 lit, LED2 12x Zero cross detecting circuit on outdoor power P.C. board
26 / LED1 once, LED2 lit Primary current protection
27 / LED1 2x, LED2 lit Defrosting in cooling
28 / LED1 3x, LED2 lit Discharge temperature protection
29 / LED1 4x, LED2 lit Low discharge temperature protection
30 / LED1 5x, LED2 lit Cooling high pressure protection
31 / LED1 7x, LED2 lit High-low pressure bypass valve or cooling evaporating temperature drop prevention control
32 / LED1 8x, LED2 lit Cooling evaporating temperature protection
33 / LED1 9x, LED2 lit Inverter check mode
34 / LED1 lit, LED2 lit Normal
E8 Indoor/outdoor communication receiving error
E9 Indoor/outdoor communication receiving error
EC Indoor/outdoor communication receiving error
UP Outdoor power-system overcurrent protection
U3 Discharge-temperature thermistor open or short
U4 Outdoor thermistor abnormality
UF Compressor overcurrent or start-up synchronous abnormality
U2 High discharge-temperature protection
Ud High-pressure protection
U5 Fin-temperature or inverter-board-temperature protection
Ub Fin-temperature or inverter-board-temperature protection
U8 Outdoor fan-motor abnormality
EF Outdoor fan-motor abnormality
FC Nonvolatile memory data cannot be read
U6 Power-module or compressor-winding short circuit
U7 Low discharge-temperature abnormality
UJ Inverter bus-bar voltage cannot be detected normally
UH Compressor phase current cannot be detected normally
UE Closed stop valve detected
P8 Abnormal indoor pipe temperature detected
PL Outdoor refrigerant-system abnormality
EF Outdoor refrigerant-system abnormality
6600 M-NET communication address is duplicated
6601 M-NET communication polarity has not been established
6602 M-NET transmission-processor hardware error Result 1 of 2 with this code and meaning. Expand for model and series details.
6603 M-NET transmission line is busy
6604 No M-NET ACK (06H) because of a communication-circuit error
6605 No M-NET response frame was received
6606 M-NET transmission-processor communication error
6607 No M-NET acknowledgement was returned
6608 No M-NET response frame was returned
0092 Controller version-combination error
0093 System-configuration change warning
0094 Charge license is not registered
0095 Warning that a metering device may be damaged
0096 Air-conditioning charge-file automatic output abnormality
0097 Apportioned-calculation data collection error
6920 Controller communication no-response error
6922 Controller communication received-frame ID error
7106 System attribute-setting error
7901 Too many units are connected to the controller system
7902 Controller-system connection lock error
7903 Controller-system unit-information error
7904 Controller-system setting error
7905 Controller version or connected-unit model mismatch
0100 Connected equipment abnormality
01*0 PAC-YG66DCA DIDO-controller equipment abnormality pattern where the third character varies
01** PAC-YG66DCA DIDO-controller equipment abnormality pattern with a variable suffix
1521 Refrigerant leak detected by an indoor unit built-in sensor
1522 Refrigerant leak detected by an indoor unit built-in sensor
1524 Refrigerant leak detected by a fluorocarbon alarm
0910 Circuit-inspection code reported by the indoor unit being inspected
0912 Circuit-inspection code reported by the shut-off valve kit or fluorocarbon-alarm interface
0900 Trial operation is enabled at switch SW2-1
3126 External pre-heater device error
4101 Remote-controller terminal overcurrent
4116 Abnormal rotation of fan motor 1
4116 Abnormal rotation of fan motor 2
4116 Abnormal rotation of fan motor 3
4116 Abnormal rotation of fan motor 4
5101 Outdoor-air thermistor error
5102 Return-air thermistor error
5501 Optional CO2 sensor error
6201 PZ-62DR remote-controller circuit-board failure
6202 PZ-62DR remote-controller clock or circuit-board failure
6600 Duplicate M-NET address
6602 M-NET transmission-processor hardware error Result 2 of 2 with this code and meaning. Expand for model and series details.
6603 M-NET transmission bus busy
6606 Communication error with the M-NET transmission processor
6607 M-NET no-acknowledgement communication error
6608 M-NET no-response communication error
6801 PZ-43SMF-E remote-controller communication error
6831 PZ-62DR remote-controller no-reception communication error
6832 PZ-62DR remote-controller synchronization-recovery communication error
6833 PZ-62DR remote-controller communication hardware error
6834 PZ-62DR start-bit detection or leader-follower communication error
7113 Lossnay function or leader-follower setting error
P1 Intake room-temperature sensor error
P2 Liquid-pipe temperature sensor TH2 error
P9 Condenser-evaporator pipe temperature sensor TH5 error
E6 Indoor-outdoor communication receiving error
E7 Indoor-outdoor communication transmitting error
P4 Drain float-switch connector open
P5 Drain overflow or drain-pump lock protection
PA Forced compressor stop due to water-leakage abnormality
P6 Freeze protection in cooling or overheat protection in heating Result 1 of 2 with this code and meaning. Expand for model and series details.
EE Indoor-outdoor unit combination error
P8 Pipe temperature does not enter the expected cooling or heating range
E4 Indoor controller cannot receive the remote-controller signal
E5 Indoor controller cannot transmit on the remote-controller path
Pb Indoor fan motor error
Fb Indoor controller memory or control-system error
PL Abnormal refrigerant circuit
E0 Remote-controller receiving error Result 1 of 2 with this code and meaning. Expand for model and series details.
E3 Remote-controller transmitting error Result 1 of 2 with this code and meaning. Expand for model and series details.
E1 Remote-controller control-board memory error Result 1 of 2 with this code and meaning. Expand for model and series details.
E2 Remote-controller clock-function error Result 1 of 2 with this code and meaning. Expand for model and series details.
E9 Indoor-outdoor unit communication error
UP Compressor overcurrent interruption Result 1 of 2 with this code and meaning. Expand for model and series details.
U3 Outdoor-unit thermistor open or short
U4 Outdoor-unit thermistor open or short
UF Compressor locked or overcurrent interruption
U2 High discharge temperature, 49C operation, or insufficient refrigerant
U1 High-pressure or overheat protection
Ud High-pressure or overheat protection
U5 Heat-sink temperature abnormality
U8 Outdoor fan protection stop
U6 Compressor overcurrent or power-module abnormality
U7 Superheat abnormality caused by low discharge temperature
U9 Power-voltage, synchronous-signal, or current-sensor abnormality
UH Power-voltage, synchronous-signal, or current-sensor abnormality
P1 Intake-air thermistor error
P2 Pipe thermistor TH2 error
P9 Pipe thermistor TH5 error
E6 Indoor/outdoor communication receiving error
E7 Indoor/outdoor communication transmitting error
P4 Drain float-switch connector open (controller display 5701)
P5 Drain overflow or drain-pump error
P6 Freeze protection in cooling or overheat protection in heating Result 2 of 2 with this code and meaning. Expand for model and series details.
EE Indoor/outdoor unit combination error
P8 Pipe-temperature abnormality
E4 Remote-controller signal receiving error
E5 Remote-controller signal transmitting error
Fb Indoor control-system or memory error
PL Refrigerant-circuit abnormality
E0 Remote-controller receiving error Result 2 of 2 with this code and meaning. Expand for model and series details.
E3 Remote-controller transmitting error Result 2 of 2 with this code and meaning. Expand for model and series details.
E1 Remote-controller control-board memory error Result 2 of 2 with this code and meaning. Expand for model and series details.
E2 Remote-controller clock-function error Result 2 of 2 with this code and meaning. Expand for model and series details.
PA Forced compressor stop due to water-leakage abnormality (controller display 2500)
P1 Intake sensor error
P2 Pipe TH2 sensor error
P9 Pipe TH5 sensor error
E6 Indoor/outdoor unit communication error Result 1 of 2 with this code and meaning. Expand for model and series details.
P4 Float switch connector open
P5 Drain pump error
PA Forced compressor error due to water leakage abnormality
P6 Freeze during cooling operation or overheat protection during heating operation
EE Combination error between indoor and outdoor unit
P8 Pipe temperature error
E4 Communication error between wired remote controller and indoor unit
PB Indoor unit fan motor error
FB Indoor unit control system error or memory error
PL Refrigerant circuit abnormal
E0 Remote controller transmission error
E1 Remote controller control board error
E9 Indoor/outdoor unit communication error
UP Compressor overcurrent interruption Result 2 of 2 with this code and meaning. Expand for model and series details.
U3 Open or short of outdoor unit thermistors
UF Compressor overcurrent interruption when the compressor is locked
U2 Abnormal high discharge temperature, 49C operated, or insufficient refrigerant
U1 Abnormal high pressure or overheat protection operation
U5 Abnormal temperature of heat sink
U8 Outdoor unit fan protection stop
U6 Compressor overcurrent interruption or abnormal power module
U7 Abnormal superheat due to low discharge temperature
U9 Overvoltage, voltage shortage, abnormal synchronous signal, or current sensor error
UP Outdoor power system
U3 Outdoor thermistors
FC Outdoor control system
E6 Compressor protector opens
E8 Serial signal
UE Stop valve or closed valve
F5 Connector 63H/TRS is open
PUY-WIRING Miswiring of indoor/outdoor connecting wire, excessive indoor-unit count, or startup time over
E6 Indoor/outdoor unit communication error Result 2 of 2 with this code and meaning. Expand for model and series details.
E0 Remote-controller receiving or transmitting error
EF Check code is not defined
PL Check code is not defined; refrigerant circuit check
Ed Serial communication error between outdoor boards or M-NET communication error
U2 Compressor surface or discharge thermistor abnormality, or low-discharge-temperature superheat abnormality
U1 Abnormal high pressure
U8 Outdoor fan motor rotational-speed abnormality or overheat protection
UF Compressor overcurrent, current sensor abnormality, or power module abnormality
U3 Open or short of outdoor thermistors
U5 Abnormal heat-sink temperature
U9 Voltage abnormality
P1 Indoor thermistor abnormality
P4 Drain sensor abnormality, float switch open, or drain overflow protection
P6 Freezing during cooling
P8 Pipe temperature abnormality
0403 Serial or panel communication fault involving the indoor or auto-filter-cleaning control boards
1102 Discharge temperature fault
1301 Low-pressure fault
1302 High-pressure fault
1500 Refrigerant overcharge
2502 Drain-pump fault
4220 Backup operation caused by abnormal bus voltage or an inverter-logic fault
4225 Control power-supply fault
4226 Low bus voltage at startup
4230 Heat-sink overheat protection
4240 Outdoor inverter or compressor overload protection
4245 Outdoor inverter or compressor overload protection
4246 Outdoor inverter or compressor overload protection
4250 Power-module (IPM) short-circuit or ground fault during backup operation
4255 Overcurrent caused by a short-circuited motor
4256 Instantaneous or effective-value overcurrent detected by software
5101 Return-air temperature sensor TH21 fault
5102 Indoor-unit pipe temperature sensor TH22 fault
5103 Indoor-unit gas-side pipe temperature sensor TH23 fault
5104 Indoor-unit outside-temperature sensor TH24 fault
5102 Temperature sensor TH2 fault at the HIC bypass-circuit outlet
5103 Heat-exchanger outlet pipe temperature sensor TH3 fault
5104 Outdoor-unit discharge temperature sensor TH4 fault
5106 Temperature sensor TH6 fault at the HIC-circuit outlet
5107 Outside-temperature sensor TH7 fault
5115 Compressor shell-bottom temperature sensor TH15 fault
5110 Heat-sink temperature sensor THHS fault
5201 High-pressure sensor 63HS1 fault
5301 Backup operation caused by an ACCT sensor or circuit fault, open-circuited IPM, or loose connector wiring
5305 Fan-board current-sensor fault
5306 Fan-board current-sensor circuit fault
6600 Address overlap on M-NET
6607 No-ACK communication fault on M-NET
6608 No-response communication fault on M-NET
6831 Signal reception fault at the MA controller with no signal received
6832 Signal transmission synchronization fault at the MA controller
6833 Signal transmission hardware fault at the MA controller
6834 Signal reception start-bit detection fault at the MA controller
7100 Total connected-capacity setting fault
7101 Indoor-unit capacity-code setting fault
7102 Wrong number of connected units
7110 Connection-information signal transmission or reception fault
7113 Function-setting fault from an improper CNTYP connection
7117 Outdoor-unit model-setting fault