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Appendix
Troubleshooting
Detection of errors
• If an error occurs during the operation, an LED flickers and the operation is stopped except the LED.
• If you re-operate the air conditioner, it operates normally at first, then detect an error again.
LED Display on the receiver & display unit
Abnormal condition
Power reset
Error on indoor temperature sensor (Short or Open)
Error on Eva-in sensor (Short or Open)
Error on Eva-out sensor (Short or Open)
Indoor fan error
Error on outdoor temperature sensor (Short or Open)
Error on cond sensor
Error on discharge sensor
units for 2 minutes
Communication error received from the outdoor unit
3 miniute tracking error on outdoor unit
Communication error after tracking due to unmatching number of
installed units
Error due to repeated communication address
Self diagnosis error display
Error due to opened EEV (2nd detection)
Error due to closed EEV (2ndetection)
Eva in sensor is detached
Eva out sensor is detached
Thermal fuse error (Open)
Indoor unit display indications
Error
code
Ice
Yellow
Blue
Green
-
X
E121
X
X
E122
X
E123
E154
X
X
E221
E237
X
E251
E101
E102
E202
X
X
E201
E108
E151
E152
X
X
E128
E129
E198
X
X
X
X
X
X
X
X
X
X
X
X
29
English
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