92
16.3. Error Codes Table
Abnormality / 
Protection control
Abnormality
Judgement
Protection
operation
Problem Check location
Diagnosis
display
H00 No memory of failure — Normal operation — —
H11 Indoor/outdoor 
abnormal 
communication
After operation for 
1 minute
Indoor fan only 
operation can 
start by entering 
into force cooling 
operation
Indoor/outdoor 
communication not establish
• Indoor/outdoor wire terminal
• Indoor/outdoor PCB
• Indoor/outdoor connection wire
H12 Indoor unit capacity 
unmatched
90s after power 
supply
— Total indoor capability more 
than maximum limit or less 
than minimum limit, or 
number of indoor unit less 
than two.
• Indoor/outdoor connection wire
• Indoor/outdoor PCB
• Specification and combination 
table in catalogue
H14 Indoor intake air 
temperature sensor 
abnormality
Continuous for 5s — Indoor intake air temperature 
sensor open or short circuit
• Indoor intake air temperature 
sensor lead wire and connector
H15 Compressor 
temperature sensor 
abnormality
Continuous for 5s — Compressor temperature 
sensor open or short circuit
• Compressor temperature sensor 
lead wire and connector
H16 Outdoor current 
transformer (CT) 
abnormality
— — Current transformer faulty or 
compressor faulty
• Outdoor PCB faulty or 
compressor faulty
H19 Indoor fan motor 
merchanism lock
Continuous 
happen for 7 times
— Indoor fan motor lock or 
feedback abnormal
• Fan motor lead wire and 
connector
• Fan motor lock or block
H23 Indoor heat exchanger 
temperature sensor 
abnormality
Continuous for 5s — Indoor heat exchanger 
temperature sensor open or 
short circuit
• Indoor heat exchanger 
temperature sensor lead wire and 
connector
H25 Indoor E-Ion 
abnormality
Port is ON for 10s 
during E-Ion off
——
• E-Ion PCB
H27 Outdoor air temperature 
sensor abnormality
Continuous for 5s — Outdoor air temperature 
sensor open or short circuit
• Outdoor air temperature sensor 
lead wire and connector
H28 Outdoor heat exchanger 
temperature sensor 1 
abnormality
Continuous for 5s — Outdoor heat exchanger 
temperature sensor 1 open 
or short circuit
• Outdoor heat exchanger 
temperature sensor 1 lead wire 
and connector
H30 Outdoor discharge pipe 
temperature sensor 
abnormality
Continuous for 5s — Outdoor discharge pipe 
temperature sensor open or 
short circuit
• Outdoor discharge pipe 
temperature sensor lead wire and 
connector
H32 Outdoor heat exchanger 
temperature sensor 2 
abnormality
Continuous for 5s — Outdoor heat exchanger 
temperature sensor 2 open 
or short circuit
• Outdoor heat exchanger 
temperature sensor 2 lead wire 
and connector
H33 Indoor / outdoor 
misconnection 
abnormality
— — Indoor and outdoor rated 
voltage different
• Indoor and outdoor units check
H34 Outdoor heat sink 
temperature sensor 
abnormality
Continuous for 2s — Outdoor heat sink 
temperature sensor open or 
short circuit
• Outdoor heat sink sensor
H36 Outdoor gas pipe 
temperature sensor 
abnormality
Continuous for 5s Heating protection 
operation only
Outdoor gas pipe 
temperature sensor open or 
short circuit
• Outdoor gas pipe temperature 
sensor lead wire and connector
H37 Outdoor liquid pipe 
temperature sensor 
abnormality
Continuous for 5s Cooling protection 
operation only
Outdoor liquid pipe 
temperature sensor open or 
short circuit
• Outdoor  liquid pipe temperature 
sensor lead wire and connector
H38 Indoor/Outdoor 
mismatch (brand code)
— — Brand code not match
• Check indoor unit and outdoor 
unit.