Troubleshooting
2. T roubleshooting
2.1 Display board
2.1.1 Icon explanation on indoor display board (Big cassette).
2.1.2 Icon explanation on indoor display board (Ceiling & floor)
2.1.3 Icon explanation on indoor display board (3TR/4TR Ceiling & floor)
2.1.4 Display board of auto-lifting panel of 4 way cassette
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