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15.3 Error Codes Table
Diagnosis
display
Abnormality /
Protection control
Abnormality
Judgment
Protection
Operation
Problem Check location
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
mechanism 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
H24
Indoor heat
exchanger
temperature sensor
2 abnormality
Continuous for 5s —
Indoor heat exchanger
temperature sensor 2 open
or short circuit
Indoor heat exchanger
temperature sensor 2 lead wire
and connector
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
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
H39
Abnormal indoor
operating unit or
standby units
3 times happen
within 40 minutes
—
Wrong wiring and
connecting pipe, expansion
valve abnormality, indoor
heat exchanger sensor
open circuit
Check indoor/outdoor
connection wire and connection
pipe
Indoor heat exchanger sensor
lead wire and connector
Expansion valve and lead wire
and connector
H59
ECONAVI sensor
abnormality
Continuous for 25s —
ECONAVI sensor open or
short circuit
ECONAVI sensor (defective or
disconnected)
ECONAVI PCB
H64
Outdoor high
pressure sensor
abnormality
Continuous for
1 minute
—
High pressure sensor open
circuit during compressor
stop
High pressure sensor
Lead wire and connector
H97
Outdoor fan motor
mechanism lock
2 times happen
within 30 minutes
—
Outdoor fan motor lock or
feedback abnormal
Outdoor fan motor lead wire
and connector
Fan motor lock or block