Samsung AM072BXV Series Service Manual page 308

Key Options
8-5 Applications (cont.)
8-5-4 Application of Mode select Switch (cont.)
< Figure 1. Mode Select Switch assembly drawing >
[WARNING]
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing.
Follow proper lockout/tagout procedures to ensure the power can-not be inadvertently energized.
Failure to disconnect power before servicing could result in death or serious injury.
5. Shut off power to the outdoor unit.
6. Connect field-supplied wires between the outdoor unit circuit board at CN1 and the 3-wire female connector.
Secure the wires in the connector with a small screw driver.
7. Attach the 3-wire female connector to the 3-wire male connector.
8. Connect the plug end of the wiring harness to the Mode Select Switch.
9. Re-assemble the Mode Select Switch (refer to Figure 1).
10. Restore power to the outdoor unit.
Operation
The mode select switch is a control option for a heat pump unit.
It is set to operate as follows :
• If set to Cool, the outdoor unit operates in cooling mode only.
• If set to Heat, the outdoor unit operates in heating mode only.
• If set to Auto, the local wired or wireless remote control determines the operating mode (heat/cool) of the outdoor unit.
Samsung Electronics
<Figure 3. Connecting the Mode Select Switch to the outdoor unit>
3-wire male
connector
< Figure 2. Connecting the wiring harness to
the 3-wire male Connector. >
Wiring harness
302