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13.3 Error Code 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
H25
Indoor ion device abnormality
Port is ON for 10s
during ion device off
—
—
ion device 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
abnormality
Continuous for 5s
—
Outdoor heat exchanger
temperature sensor open
or short circuit
Outdoor heat exchanger
temperature sensor 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
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
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
H41
Abnormal wiring or piping
connection
—
—
Wrong wiring and
connecting pipe,
expansion valve
abnormality
Check indoor/outdoor
connection wire and
connection pipe
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