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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
LED Display
1 Way cassette / 2 Way cassette
Error on indoor temperature sensor (Short or Open)
1. Error on Eva-in sensor (Short or Open)
2. Error on Eva-out sensor (Short or Open)
3. Discharge sensor error (Short or Open)
Indoor fan error
1. Error on outdoor temperature sensor (Short or Open)
2. Error on cond sensor
3. Error on discharge sensor
Other outdoor unit sensor error that is not on the above list
1. When there is no communication between the indoor∙outdoor units
for 2 minutes
2. Communication error received from the outdoor unit
3. 3 miniute tracking error on outdoor unit
4. Communication error after tracking due to unmatching number of
installed units
5. Error due to repeated communication address
6. Communication address not confirmed
Other outdoor unit communication error that is not on the above list
Self diagnosis error display
1. Error due to opened EEV (2nd detection)
2. Error due to closed EEV (2nd detection)
3. Eva in sensor is detached
4. Eva out sensor is detached
5. Thermal fuse error (Open)
DVM S NASA_Global 4-WC_사우디향_IM_EN_04191A.indd 37
Abnormal condition
LED Display
Error code
Green
Red
E121
X
X
E122
E123
X
E126
E154
X
X
E221
E237
X
E251
E101
E102
E202
E201
X
X
E108
E109
E151
E152
X
X
E128
E129
E198
X
X
X
X
X
X
X
X
X
37
2013-11-05 오전 11:30:35
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