156 Service Manual SM-MDS_(ii)
The wiring diagram for this feature is as shown below:
Remark:
1. When the T_IDOUT2 connector is OPEN, the indoor unit can be operated by handset. When the T_IDOUT2
connector is CLOSED, the indoor unit will stop operates and goes into standby mode.
2. The “Key Card Access Feature” can be used for other functions such as turning off the indoor units when
window is open. The concept and wiring diagram will be similar to the diagram shown above.
3. Take note that the indoor unit will always be in standby condition (there’s power supply to the indoor PCB).
4. When the key card is inserted, the unit will not turn on directly unless Auto Restart has been set.
5. Once the key card is inserted, user can use the wired/wireless controller to control the indoor unit. When the
key card is not inserted, wired/wireless controller will not be able to control the indoor unit.
6. When key card is removed, indoor unit will stop operating (standby condition).
MCB
Power Supply
240V/50Hz/1Ph
MAIN POWER
SUPPLY
240V/50Hz/1Ph
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