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11. Failure code and troubleshooting
11.1 Free multi outdoor unit fault code:
Outdoor lamp flash times Fault code
1 Discharging A pipe temp. too high
2 Outdoor coil A temp. sensor failure
3 Outdoor ambient temp. sensor failure
4 Air outlet A temp. sensor failure
5 Outdoor coil B temp. sensor failure
6 Air outlet B temp. sensor failure
7 Discharging B pipe temp. too high
9 Low pressure malfunction
10 Communication failure between indoor and outdoor
11 Overcurrent protection
13 High pressure malfunction
15 EEPROM failure
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