Cooling / heating operation of the multi air conditioning system

 In a multiple air conditioning system, the cooling and heating operation cannot be performed at the same time on the indoor units installed to an external system, although each indoor unit can be individually controlled.

If both operations are performed at the same time, the indoor unit in COOL mode stops. The indoor unit in HEAT mode continues to operate.

When the COOL or HEAT mode is set by the air conditioner manager, operations other than those already configured will no longer be available. If an operation other than the configured one is performed, the [STANDBY] mode will continue and the operation will cease.