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6、The analysis of indoor malfunction code（internal wiring get loose, which
will cause malfunction.）
Ⅰ、indoor detailed malfunction
1.when indoor unit live wire is disconnected，its lamp panel can’t display.
Live wire is off。
2.when the transformer’s secondary and primary disconnect or indoor fuse is off，the indoor unit lamp
panel can’t display.
Transformer secondary is off
Transformer primary is off
The relevant transfomer primary
socket
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