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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
Abnormal condition
Error code
LED Display
Error on indoor temperature sensor (Short or Open)
E121
X
X
X
X
1.
Error on Eva-in sensor (Short or Open)
E122
X
X
X
2.
Error on Eva-out sensor (Short or Open)
E123
3.
Discharge sensor error (Short or Open)
E126
Indoor fan error
E154
X
X
X
X
1.
Error on outdoor temperature sensor (Short or Open)
E221
X
X
X
2.
Error on cond sensor
E237
3.
Error on discharge sensor
E251
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
E101
X
X
X
2.
Communication error received from the outdoor unit
E102
3.
3 miniute tracking error on outdoor unit
E202
4.
Communication error after tracking due to unmatching number of
installed units
E201
5.
Error due to repeated communication address
E108
6.
Communication address not confirmed
E109
Other outdoor unit communication error that is not on the above list
Self diagnosis error display
X
X
1.
Error due to opened EEV (2nd detection)
E151
2.
Error due to closed EEV (2nd detection)
E152
3.
Eva in sensor is detached
E128
4.
Eva out sensor is detached
E129
5.
Thermal fuse error (Open)
E198
Summary of Contents for AM FNCD Series
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