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15. ERROR CODES
If you use a wired remote controller, error codes will appear on the remote controller display. If you use a wireless remote con-
troller, the lamp on the photodetector unit will output error codes by way of blinking patterns. See the lamp blinking patterns and
error codes in the following table. An error display is displayed only during operation.
Error display
Wired
remote
controller
Error code
Mode
DESCRIPTION
Remark
OPERATION
lamp
(green)
TIMER
lamp
(orange)
ECONOMY
lamp
(green)
(1)
(1)
Communication
Serial communication error
• When the indoor unit cannot receive the signal from the branch unit
• When the branch unit cannot receive the signal from the indoor unit
(1)
(2)
Communication
Remote controller
communication error
• Wired remote controller communication error
(1)
(5)
Communication
Scan error
• Check operation incompletion error (normally, operation disabled)
(2)
(1)
Function setting Initial setting error
• Wiring mistake
(2)
(2)
Function setting Indoor unit capacity error
• Indoor unit capacity error
(2)
(3)
Function setting Connection disabled (series error)
• Combination error
(2)
(4)
Function setting Connection unit number
error
• Connection unit number error (indoor unit)
• Connection unit number error (branch unit)
(3)
(2)
Indoor unit
Indoor unit main PCB error
• Indoor unit PCB Model information error
(3)
(5)
Indoor unit
Manual auto switch error
• Manual auto switch error
(4)
(1)
Indoor unit
Room error
• Inlet thermistor error
(4)
(2)
Indoor unit
Indoor unit Heat Ex. sensor error
• Indoor unit Heat Ex. Middle thermistor error
(5)
(1)
Indoor unit
Indoor unit fan motor 1 error
• Main fan motor lock error
• Main fan motor revolution speed error
(5)
(3)
Indoor unit
Water Drain error
• Drain pump error
(5)
(15)
Indoor unit
Indoor unit error
• Indoor unit error
(6)
(2)
Outdoor unit
Outdoor unit main PCB error
• Outdoor unit PCB Model information error
• Outdoor unit PCB microcomputer communication error
(6)
(3)
Outdoor unit
Inverter PCB error
• Inverter error
(6)
(4)
Outdoor unit
Active
fi
lter error, PFC
circuit error
• Voltage error stoppage permanently
• Voltage error (can restore)
• Over current protected operation stoppage permanently
• PFC hardware error
(6)
(5)
Outdoor unit
IPM error
• Trip terminal L error
(6)
(10)
Outdoor unit
Display panel error
• Microcomputers communication error
(7)
(1)
Outdoor unit
Discharge thermistor error
• Discharge thermistor 1 error
(7)
(2)
Outdoor unit
Compressor thermistor error
• Compressor thermistor 1 error
(7)
(3)
Outdoor unit
Outdoor unit Heat Ex.
Sensor error
• Outdoor unit Heat Ex. liquid thermistor error
(7)
(4)
Outdoor unit
Outdoor thermistor error
• Outdoor thermistor error
(7)
(5)
Outdoor unit
Suction Gas thermistor error
• Suction Gas thermistor error
(7)
(7)
Outdoor unit
Heat sink thermistor error
• Heat sink thermistor error
(8)
(2)
Outdoor unit
Sub-cool Heat Ex. gas
thermistor error
• Sub-cool Heat Ex. gas inlet thermistor error
• Sub-cool Heat Ex. gas outlet thermistor error
(8)
(3)
Outdoor unit
Liquid pipe thermistor error
• Liquid pipe thermistor 1 error
(8)
(4)
Outdoor unit
Current sensor error
• Current sensor 1 error (stoppage permanently)
(8)
(6)
Outdoor unit
Pressure sensor error
• Discharge pressure sensor error
• Suction pressure sensor error
• High pressure switch 1 error
(9)
(4)
Outdoor unit
Trip detection
• Trip detection
(9)
(5)
Outdoor unit
Compressor motor control error
• Rotor position detection error (stoppage permanently)
(9)
(7)
Outdoor unit
Outdoor unit fan motor 1 error
• Duty error
(9)
(9)
Outdoor unit
4-way valve error
• 4-way valve error
(10)
(1)
Refrigerant system
Discharge temperature 1 error
• Discharge temperature 1 error
(10)
(3)
Refrigerant system
Compressor temperature error
• Compressor 1 temperature error
(10)
(5)
Refrigerant system
Pressure error 2
• Low pressure error
(13)
(2)
Branch box
Unit
fl
ow divider error
• EEPROM access error
• Equipment type information error
• Serial communication error to outdoor unit
• Branch units serial communication error
• Serial communication error to indoor unit
• Liquid pipe thermistor error
• Gas pipe thermistor error
• Expansion valve full closure operation error
• Remote control communication error
• Branch unit error
• Display mode : 0.5s ON / 0.5s OFF, ( )
: Number of
fl
ashing,
: 0.1s ON / 0.1s OFF
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9/26/2018 11:04:21 AM
9/26/2018 11:04:21 AM
