Mitsubishi Electric MAC-397IF-E Manuel D'installation page 7

SW501- No. 5–6
M series
No. 5 and 6 should normally be set to OFF.
ON
Under the following conditions, however, they should be switched to ON.
5 6
Turn this ON only when the indoor units in the same group include models where the MA remote controller and
indoor unit are directly connected.
Turn this ON only when using the room temperature sensor installed in the MA remote controller.
* This can be switched when an accurate room temperature cannot be detected by the air conditioner unit.
MSZ-GA and MSZ-FA Series models can not use a room temperature sensor on their MA remote controllers.
(Some M series models will not allow the use of the MA remote controller room temperature sensor.)
■ SW502:
• Set this switch based on the functions of the indoor unit connected to the interface.
• See the table on Page 12 and set the switch after checking the functions using the wireless remote control that comes with
the indoor unit.
4.3. Remote Control (Turning Indoor Unit On and Off from the Contact Point)
• You can turn Indoor Unit on and off using an on/off switch like a light switch.
• Connect the supplied lead wires (6) F to the connector CN591 on the interface board.
• Wire the remote control components, including the switches, at the installation site.
• Please use extension wires with reinforced insulation.
Indoor unit
* Lead wires (6) F
• When the switch contact point is closed (ON), the air conditioner will turn on, and when the switch contact point is open (OFF),
the air conditioner will turn off.
* When connecting the connector and the lead wire, connect them using a closed end connector as shown below.
Signal wires A
Dip switch settings
■ SW500
ON
1 2 3 4 5 6
Setting required
■ SW501 and SW502 do not have to be set.
Interface unit 1
CN591
CN560
1 2 3 4 5 6
Signal wires A at the installation site.
Cable ties A
7 8
Switch (contact point a)
(about 10 mA) C
100 m max.
Closed end connector
7