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Troubleshooting
Appendix
Troubleshooting
1 way Cassette
Abnormal conditions
LED lamp display
Remarks
Operation Defrost
Timer Fan
Filter
reset
Blue Yellow
Power reset X XXX
Error of temperature sensor in the indoor unit (Open/
Short)
XX
XX
Error of heat exchanger sensor in the indoor unit
X XX
Error of the outdoor temperature sensor
Error of the condensor temperature sensor
Error of the discharge temperature sensor
XX X
1. No communication for 2 minutes between indoor
units (Communication error for more than 2 minutes)
2. Indoor unit receiving the communication error from
outdoor unit
3. Outdoor unit tracking 3 minutes error
4. When sending the communication error from the
outdoor unit, the mismatching of the communication
numbers and installed numbers after completion
of tracking. (Communication error for more than 2
minutes
XX
X
1. Indoor unit
error (Display is
unrelated with
operation)
2. Outdoor unit
error (Display is
unrelated with
operation
1. Error of electronic expansion valve open
2. 2’nd detection of high temperature cond
3. 2’nd detection of high temperature discharge
4. Error of reverse phase
5. Compressor down due to 6th detection of freezing
XX
Detection of the float switch X X X
EEPROM error
EEPROM option error
Error on indoor fan motor (E154) X X X X
Outdoor valve clogging error
X X
Error due to connecting outdoor units that do not
support the Wind-Free function
X X
: On, : Flickering, X : Off
ŷ If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
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