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Components
The Indoor Unit Circuit Board communicates with the outdoor unit ECU
via a connection at Terminal Block screw 3. The data pulse that sends the
transmitted.
Line voltage to power the indoor unit comes in on Terminal Block connections
1 and 2. Power connects from these terminal connections to CH- 1 and CH-2 on
check for line voltage at these connections. When power is present at the indoor
Indoor Unit Circuit Board
9
8
7
6
1
2
3
4
5
230VAC ,3A)
6 578
2
1
9
3
4
PAGE 41
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