If you use a wired type remote control,
error codes will appear on the remote control display.
If you use a wireless remote control,
the lamps on the IR receiver unit will output error codes
by way of blinking patterns.
See the lamp blinking patterns and error codes in the table below.
An error display is displayed only during operation.
ERROR DETECTION
Indoor unit lamps
Wired
remote
control
Mode
Description
Remark
OPERATION
(green)
TIMER
(orange)
ECONOMY
(green)
(1)
(1)
Communication
Serial communication error
Wired remote control
• 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 control
communication error
•Wired remote control 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 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 filter 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 flow 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 flashing,
: 0.1s ON / 0.1s OFF
14
2013.04.25
Error code
