En-14
13. ERROR CODES
[Troubleshooting at the remote controller LCD]
This is possible only on the wired remote controller.
[Self-diagnosis]
If an error occurs, the following display will be shown.(“Er” will appear in the set room
temperature display.)
Error code
Unit number of indoor unit
EX. Self-diagnosis
Wired remote
controller
Error code
Description
Serial communication error
Wired remote controller communication error
Check run unfinished
Unit number or Refrigerant circuit address setting error
[Simultaneous Multi]
Indoor unit capacity error
Combination error
•
Connection unit number error (indoor secondary unit)
[Simultaneous Multi]
•
Connection unit number error (indoor unit or branch unit) [Flexible
Multi]
Primary unit, secondary unit set-up error [Simultaneous Multi]
Power supply interruption error
Indoor unit PCB model information error
Manual auto switch error
Room temp. sensor error
Indoor unit Heat Ex. Middle temp. sensor error
Indoor unit fan motor error
Drain pump error
Damper error
Indoor unit error
Outdoor unit main PCB model information error or communication
error
Inverter error
Active filter error, PFC circuit error
Trip terminal L error
Display PCB microcomputers communication error
Discharge temp. sensor error
Compressor temp. sensor error
Outdoor unit Heat Ex. liquid temp. sensor error
Outdoor temp. sensor error
Suction Gas temp. sensor error
•
2-way valve temp. sensor error
•
3-way valve temp. sensor error
Heat sink temp. sensor error
• Sub-cool Heat Ex. gas inlet temp. sensor error
• Sub-cool Heat Ex. gas outlet temp. sensor error
Liquid pipe temp. sensor error
Current sensor error
•
Discharge pressure sensor error
• Suction pressure sensor error
• High pressure switch error
Trip detection
Compressor rotor position
detection error (permanent stop)
Outdoor unit fan motor 1 error
Outdoor unit fan motor 2 error
4-way valve error
Coil (expansion valve) error
Discharge temp. error
Compressor temp. error
High pressure error
Low pressure error
Branch boxes error
[Flexible Multi]
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