Daikin ARC417A Manuale - Pagina 6
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Malfunction
Malfunction Contents
code
Malfunction of compressor motor
Defect of compressor motor overload thermistor
H5
overload thermistor
Defective connector contact
Malfunction of position detection
Faulty contact of compress or cable
H6
sensor
Defective compressor
Defective outdoor unit PCB
Malfunction of outdoor unit fan
Abnormal signal from fan motor (Circuit failure)
H7
motor signal
Disconnection/Short circuit in fan motor leads or
disconnection of connector
Defective inverter PCB
Malfunction of compressor input
Defective power transistor
H8
(CT) system
Defective reactor
Faulty wiring of inverter system
Defective outdoor unit PCB
Malfunction of outdoor air
Defective connection of thermistor
H9
thermistor
Defective outdoor unit PCB
Defective outdoor air thermistor
Malfunction of (hot) water
Defective connection of thermistor
HC
temperature thermistor
Defective outdoor unit PCB
Defective water temperature thermistor
Alarm in thermal storage unit or
Thermal storage group defective wiring
HF
storage controller
Defective setting
Excess of thermal storage tank numbers
Malfunction of thermal storage
Low water level
HJ
tank water level
Defective switch setting
Water level detecting sensor failure
Defective connector contact
Malfunction of pressure sensor
Defective pressure sensor connector contact
J1
Defective pressure sensor
Defective outdoor unit PCB
Malfunction of current sensor of
Defective current sensor
J2
compressor
Defective compressor
Defective outdoor unit PCB
Malfunction of discharge pipe
Defective connection of thermistor
J3
thermistor
Defective discharge pipe thermistor
Defective outdoor unit PCB
Malfunction of low pressure
Defective connection of thermistor
J4
equivalent saturated temperature
Defective thermistor
sensor system
Defective outdoor unit PCB
Malfunction of suction pipe
Defective connection of thermistor
J5
thermistor
Defective suction pipe thermistor
Defective outdoor unit PCB
Malfunction of heat exchanger
Defective connection of thermistor
J6
thermistor
Defective heat exchanger thermistor
Defective outdoor unit PCB
Malfunction of thermistor
Defective connection of thermistor
J7
(Refrigerant circuit)
Defective liquid pipe thermistor
Defective outdoor unit PCB
Malfunction of thermistor
Defective connection of thermistor
J8
(Refrigerant circuit)
Defective liquid pipe thermistor
Defective outdoor unit PCB
Malfunction of thermistor
Defective connection of thermistor
J9
(Refrigerant circuit)
Defective gas pipe thermistor
Defective outdoor unit PCB
Malfunction of high pressure
Defective connector contact
sensor
Connection of low pressure sensor in mistake for high
JA
pressure sensor
Defective high pressure sensor
Defective outdoor unit PCB
Malfunction of low pressure sensor
Defective connector contact
Connection of high pressure sensor in mistake for low
JC
pressure sensor
Defective low pressure sensor
Defective outdoor unit PCB
Simple Self-Diagnosis by Malfunction Code
Objects
Supposed causes
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Malfunction
Malfunction Contents
code
k
Malfunction of oil pressure sensor
JE
or sub-tank thermistor
k
k
Malfunction of oil level sensor or
JF
heating heat exchanger thermistor
Malfunction of inverter system
k
L0
Malfunction of inverter PCB
k
L1
El.compo. box temperature rise
k
L3
k
L4
Malfunction of inverter radiation fi n
temperature rise
nverter instantaneous overcurrent
L5
(DC output)
Inverter instantaneous overcurrent
L6
(AC output)
k
Malfunction of overcurrent inverter
L8
compressor
k
Malfunction of inverter compressor
startup error (Stall prevention)
L9
k
Malfunction of power transistor
k
LA
Malfunction of transmission
k
between control and inverter PCB
LC
k
M1
Malfunction of central remote
controller PCB
k
Malfunction of transmission
M8
between optional controllers for
centralized control
k
Improper combination of optional
controllers for centralized control
MA
k
MC
Address duplication, improper
setting
k
P0
Shortage of refrigerant amount
(thermal storage unit)
Power voltage imbalance or
inverter PCB
k
P1
Supposed causes
Defective connector contact
Defective sub-tank thermistor
Defective outdoor unit PCB
Defective connector contact
Defective heat exchanger thermistor
Defective outdoor unit PCB
Shortage of power supply capacity
Defective power transistor
Defective outdoor unit PCB
Defective compressor wiring
Defective outdoor unit fan motor
Blown fuse
Defective inverter PCB
Fin temperature rise due to short circuit
Defective outdoor unit fan motor
Defective power transistor
Defective outdoor unit PCB
Fin temperature rise due to short circuit
Defective fi n thermistor
Defective compressor coil (such as wiring disconnection or
insulation failure)
Compressor startup failure (mechanical lock)
Defective inverter PCB
Overcharge of refrigerant amount
Shortage of power supply capacity
Defective compressor
Defective inverter unit
Compressor overloaded
Wiring disconnection in compressor coil
Disconnection of compressor wiring
Defective inverter PCB
The stop valve is not opened
Defective compressor
Error in wire connections to compressor
Large differential pressure before compressor startup
Defective inverter PCB
Defective power transistor
Defective compressor
Defective inverter PCB
Defective connection between the inverter PCB and the
control PCB
External factors (e.g. noise)
Defective inverter compressor
Defective control PCB (transmission block)
Defective central remote controller PCB
Other centralized control power disconnection
Centralized control reset switch ON
Defective transmission wiring
Central remote controller address change
Improper combination of optional controllers for centralized
control
More than one master controller is connected
Faulty setting of centralized control
Defect of centralized control
Address duplication of central remote controller
Shortage of refrigerant
Clogged refrigerant piping
Open phase
Interphase voltage imbalance
Defective capacitor in the main circuit
Defective wiring in the main circuit
Defective inverter PCB
Objects
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