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76
18.3 Error Code Table
Abnormality /
Protection control
Abnormality
Judgement
Protection
operation
Problem Check location
Diagnosis
display
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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
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
H33 Indoor / outdoor
misconnection
abnormality
— — Indoor and outdoor rated
voltage different
• Indoor and outdoor units check
H38 Indoor/Outdoor
mismatch (brand code)
— — Brand code not match
• Check indoor unit and outdoor
unit.
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
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
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
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 the indoor/outdoor
connection wire and connection
pipe.
• Indoor heat exchanger sensor
lead wire and connector.
• Expansion valve and lead wire
and connector system.
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