14
NOTE 2
FOR MULTI SYSTEM AIR CONDITIONER
OUTDOOR UNIT : MXZ series
Multi system air conditioner can connect two or more indoor units with one outdoor unit.
•When you try to operate two or more indoor units with one outdoor unit simultaneously, one for the cool-
ing and the others for heating, the operation mode of the indoor unit that operates earlier is selected. Other
indoor units cannot operate, and operation indicator lamp flashes as shown in the figure below. In this case,
please set all the indoor units to the same operation mode.
(3) Positioning
To confirm the standard position, the vane moves until it touches the vane stopper. Then the vane is set to the selected
angle.
Confirming of standard position is performed in the following cases:
(a) When the operation starts or finishes (including timer operation).
(b) When the test run starts.
(c) When standby mode (only during multi system operation) starts or finishes.
(4) VANE AUTO ( ) mode
The microprocessor automatically determines the vane angle and operation to make the optimum room temperature dis-
tribution.
7-5. AUTO VANE OPERATION
1. Horizontal vane
(1) Vane motor drive
These models are equipped with a stepping motor for the horizontal vane. The rotating direction, speed, and angle of
the motor are controlled by pulse signals (approx. 12 V) transmitted from indoor microprocessor.
(2) The horizontal vane angle and mode change as follows by pressing VANE CONTROL button.
Upward
COOL and DRY operation
Vane angle is fixed to Horizontal position or Angle 1.
HEAT operation
Vane angle is fixed to Angle 4.
MSZ-GC22/25/35/50
MSZ-GC60/71
•When indoor unit starts the operation while the defrosting of outdoor unit is being done, it takes a few minutes
(max. 10 minutes) to blow out the warm air.
•In the heating operation, though indoor unit that does not operate may get warm or the sound of refrigerant
flowing may be heard, they are not malfunction. The reason is that the refrigerant continuously flows into it.
OPERATION INDICATOR
or
Lighted
Blinking
Not lighted
