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Fig. 12 — Control Board Diagram
LEGEND
CCN — Carrier Comfort Network R—Relay
COM — Common SIO — Serial Input/Output
D—Diode SW — Switch
N.C. — Normally Closed T—Terminal
N.O. — Normally Open
*Where X is the unit control software version (1 or 2).
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Carrier 50EW Air Conditioner User Manual