E1 High-pressure protection
E2 Anti-freezing operating status; the manual says this is not an error code
F0 Refrigerant-leakage protection
E4 High discharge-temperature compressor protection
E5 Overcurrent protection
E6 Indoor-outdoor communication malfunction Result 1 of 2 with this code and meaning. Expand for model and series details.
E8 High-temperature resistance protection
EE EEPROM malfunction Result 1 of 2 with this code and meaning. Expand for model and series details.
EU Frequency reduction because module temperature is high
C5 Jumper-cap protection
Fo Refrigerant-recovery service mode Result 1 of 2 with this code and meaning. Expand for model and series details.
F1 Indoor ambient-temperature sensor open or short circuit Result 1 of 2 with this code and meaning. Expand for model and series details.
F2 Indoor evaporator-temperature sensor open or short circuit Result 1 of 2 with this code and meaning. Expand for model and series details.
F3 Outdoor ambient-temperature sensor open or short circuit Result 1 of 2 with this code and meaning. Expand for model and series details.
F4 Outdoor condenser-temperature sensor open or short circuit Result 1 of 2 with this code and meaning. Expand for model and series details.
F5 Outdoor discharge-temperature sensor open or short circuit Result 1 of 2 with this code and meaning. Expand for model and series details.
F6 Frequency reduction due to overload
F8 Frequency reduction due to overcurrent
F9 Frequency reduction due to high discharge temperature
FH Anti-freezing frequency limit
PH DC bus voltage is too high Result 1 of 2 with this code and meaning. Expand for model and series details.
PL DC bus voltage is too low Result 1 of 2 with this code and meaning. Expand for model and series details.
P0 Minimum compressor-frequency test state
P1 Rated compressor-frequency test state
P2 Maximum compressor-frequency test state
P3 Intermediate compressor-frequency test state
P5 Compressor phase-current overcurrent protection
PU Capacitor-charging malfunction Result 1 of 2 with this code and meaning. Expand for model and series details.
P7 Module temperature-sensor circuit malfunction Result 1 of 2 with this code and meaning. Expand for model and series details.
P8 Module high-temperature protection
H0 Heating frequency reduction due to high-temperature resistance
H2 Static-dedusting protection
H3 Compressor overload protection Result 1 of 3 with this code and meaning. Expand for model and series details.
H4 System abnormality Result 1 of 2 with this code and meaning. Expand for model and series details.
H5 IPM protection Result 1 of 3 with this code and meaning. Expand for model and series details.
H6 Indoor fan motor not operating
H7 Compressor desynchronization Result 1 of 2 with this code and meaning. Expand for model and series details.
HC PFC protection Result 1 of 3 with this code and meaning. Expand for model and series details.
L3 Outdoor DC fan motor malfunction
L9 Power protection
LP Indoor-outdoor unit mismatch
LC Compressor startup failure
U1 Compressor phase-current detection circuit malfunction Result 1 of 2 with this code and meaning. Expand for model and series details.
U3 DC bus-bar voltage-drop malfunction
U5 Complete-unit current-detection malfunction
U7 Four-way valve abnormality
U9 Outdoor-unit zero-crossing malfunction
Defrost indicator Defrosting operating status; the manual says this is not an error code
U8 Indoor control-board detection malfunction
JF Wi-Fi detection-plate malfunction
E9 Cold-air-prevention operating status; the manual says this is not an error code
oE Unspecified outdoor-unit fault Result 1 of 2 with this code and meaning. Expand for model and series details.
C5 Jumper-cap malfunction
E6 Indoor-outdoor communication malfunction Result 2 of 2 with this code and meaning. Expand for model and series details.
H5 IPM protection Result 2 of 3 with this code and meaning. Expand for model and series details.
L3 / LA Outdoor fan or DC motor malfunction; L3 identifies fan 1 and LA identifies fan 2
H3 Compressor overload protection Result 2 of 3 with this code and meaning. Expand for model and series details.
F0 Insufficient-refrigerant or refrigerant cut-off protection
F1 Indoor ambient-temperature sensor open or short circuit Result 2 of 2 with this code and meaning. Expand for model and series details.
F2 Indoor evaporator-temperature sensor open or short circuit Result 2 of 2 with this code and meaning. Expand for model and series details.
H6 No feedback from indoor fan motor
LP Indoor-outdoor capacity mismatch
C4 Outdoor-unit jumper-cap malfunction
b1 Gas-valve temperature sensor open or short circuit
b5 Liquid-valve temperature sensor open or short circuit
E1 System high-pressure protection
E3 System low-pressure protection
E4 High compressor discharge-temperature protection Result 1 of 3 with this code and meaning. Expand for model and series details.
E5 AC overcurrent protection
E7 Multi-zone operating-mode conflict
E8 High-temperature prevention protection
EE EEPROM malfunction Result 2 of 2 with this code and meaning. Expand for model and series details.
Fo Refrigerant-recovery service mode Result 2 of 2 with this code and meaning. Expand for model and series details.
F3 Outdoor ambient-temperature sensor open or short circuit Result 2 of 2 with this code and meaning. Expand for model and series details.
F4 Outdoor condenser-temperature sensor open or short circuit Result 2 of 2 with this code and meaning. Expand for model and series details.
F5 Outdoor discharge-temperature sensor open or short circuit Result 2 of 2 with this code and meaning. Expand for model and series details.
FC Sliding-door micro-switch malfunction
H4 System abnormality Result 2 of 2 with this code and meaning. Expand for model and series details.
H7 Compressor desynchronization Result 2 of 2 with this code and meaning. Expand for model and series details.
HC PFC protection Result 2 of 3 with this code and meaning. Expand for model and series details.
HE Compressor demagnetization protection
JF Indoor-unit to inspection-board communication malfunction
L1 Humidity-sensor malfunction
L9 High-power protection
Lc Compressor startup failure Result 1 of 3 with this code and meaning. Expand for model and series details.
Ld Compressor lost-phase fault
P5 Compressor over-phase-current protection
oE Unspecified outdoor-unit fault Result 2 of 2 with this code and meaning. Expand for model and series details.
P6 Drive-board to main-board communication malfunction
P7 Module temperature-sensor circuit malfunction Result 2 of 2 with this code and meaning. Expand for model and series details.
P8 Module overheating protection
PF Drive-board ambient-temperature sensor malfunction
PH DC bus voltage is too high Result 2 of 2 with this code and meaning. Expand for model and series details.
PL DC bus voltage is too low Result 2 of 2 with this code and meaning. Expand for model and series details.
PU Capacitor-charging malfunction Result 2 of 2 with this code and meaning. Expand for model and series details.
rF RF module malfunction
U1 Compressor phase-current detection circuit malfunction Result 2 of 2 with this code and meaning. Expand for model and series details.
U2 Compressor lost-phase protection
E1 Compressor high-pressure protection Result 1 of 2 with this code and meaning. Expand for model and series details.
E3 Refrigerant shortage or compressor low-pressure protection
E4 High compressor discharge-temperature protection Result 2 of 3 with this code and meaning. Expand for model and series details.
H4 Overload protection Result 1 of 2 with this code and meaning. Expand for model and series details.
F4 Discharge-temperature sensor error Result 1 of 2 with this code and meaning. Expand for model and series details.
F3 Outdoor ambient-temperature sensor error Result 1 of 2 with this code and meaning. Expand for model and series details.
e1 High-pressure sensor error Result 1 of 2 with this code and meaning. Expand for model and series details.
e3 Low-pressure sensor error
EE Outdoor memory read/write failure
C4 Outdoor-unit jumper-cap error Result 1 of 2 with this code and meaning. Expand for model and series details.
F2 Condenser-temperature sensor error Result 1 of 2 with this code and meaning. Expand for model and series details.
F6 Outdoor tube-temperature sensor error Result 1 of 2 with this code and meaning. Expand for model and series details.
H3 Compressor overload protection Result 3 of 3 with this code and meaning. Expand for model and series details.
PL DC bus low-voltage protection Result 1 of 2 with this code and meaning. Expand for model and series details.
PH DC bus high-voltage protection Result 1 of 2 with this code and meaning. Expand for model and series details.
PA Outdoor-unit AC current protection
H5 IPM module current protection
H6 DC fan error Result 1 of 2 with this code and meaning. Expand for model and series details.
HC PFC overcurrent protection
Lc Compressor startup failure Result 2 of 3 with this code and meaning. Expand for model and series details.
P0 Driver reset protection Result 1 of 2 with this code and meaning. Expand for model and series details.
P5 Compressor phase-overcurrent protection
Pc Driver current error Result 1 of 2 with this code and meaning. Expand for model and series details.
H7 Compressor out-of-step protection
P7 Module temperature-sensor circuit failure
ee Drive memory-chip error Result 1 of 2 with this code and meaning. Expand for model and series details.
PU Capacitor-charging failure
A1 Outdoor fan IPM module protection
AC Outdoor fan startup failure
UL Outdoor fan overcurrent protection
AE Outdoor fan current-detection circuit error
AJ Outdoor fan out-of-step protection
E1 Compressor high-pressure protection Result 2 of 2 with this code and meaning. Expand for model and series details.
E3 Compressor low-pressure protection
E4 High compressor discharge-temperature protection Result 3 of 3 with this code and meaning. Expand for model and series details.
F2 Condenser-temperature sensor error Result 2 of 2 with this code and meaning. Expand for model and series details.
F3 Outdoor ambient-temperature sensor error Result 2 of 2 with this code and meaning. Expand for model and series details.
F4 Discharge-temperature sensor error Result 2 of 2 with this code and meaning. Expand for model and series details.
F6 Outdoor tube-temperature sensor error Result 2 of 2 with this code and meaning. Expand for model and series details.
EE Outdoor memory-chip error
H4 Overload protection Result 2 of 2 with this code and meaning. Expand for model and series details.
H5 IPM protection Result 3 of 3 with this code and meaning. Expand for model and series details.
H6 DC fan error Result 2 of 2 with this code and meaning. Expand for model and series details.
H7 Driver out-of-step protection
HC PFC protection Result 3 of 3 with this code and meaning. Expand for model and series details.
Lc Compressor startup failure Result 3 of 3 with this code and meaning. Expand for model and series details.
P0 Driver reset protection Result 2 of 2 with this code and meaning. Expand for model and series details.
P5 Overcurrent protection
P6 Master-control to driver communication error
P7 Driver module-sensor error
P8 Driver module high-temperature protection
PA AC current protection
Pc Driver current error Result 2 of 2 with this code and meaning. Expand for model and series details.
PL DC bus low-voltage protection Result 2 of 2 with this code and meaning. Expand for model and series details.
PH DC bus high-voltage protection Result 2 of 2 with this code and meaning. Expand for model and series details.
PU Charge-loop error
ee Drive memory-chip error Result 2 of 2 with this code and meaning. Expand for model and series details.
e1 High-pressure sensor error Result 2 of 2 with this code and meaning. Expand for model and series details.
C4 Outdoor-unit jumper-cap error Result 2 of 2 with this code and meaning. Expand for model and series details.
U8 TOSOT fault display; the official quick guide does not publish a component-level meaning for this individual code
H6 TOSOT fault display; the official quick guide does not publish a component-level meaning for this individual code
H3 TOSOT fault display; the official quick guide does not publish a component-level meaning for this individual code
E1 TOSOT fault display; the official quick guide does not publish a component-level meaning for this individual code
E5 TOSOT fault display; the official quick guide does not publish a component-level meaning for this individual code
E6 TOSOT fault display; the official quick guide does not publish a component-level meaning for this individual code
E8 TOSOT fault display; the official quick guide does not publish a component-level meaning for this individual code
C5 TOSOT service-required fault display; the official quick guide does not publish a component-level meaning for this individual code
F0 TOSOT service-required fault display; the official quick guide does not publish a component-level meaning for this individual code
F1 TOSOT service-required fault display; the official quick guide does not publish a component-level meaning for this individual code
F2 TOSOT service-required fault display; the official quick guide does not publish a component-level meaning for this individual code
E2 Operating-status code; the official quick guide says this is not an error code
E9 Operating-status code; the official quick guide says this is not an error code