Mitsubishi Electric MSZ-FE12NA Service Manual download pdf (Page 16)

(8) Cold air prevention in HEAT operation

The horizontal vane position is set to Upward.

NOTE: When 2 or more indoor units are operated with multi outdoor unit, even if any indoor unit turns thermostat off,

this control does not work in the indoor unit.

(9) ECONO COOL (

) operation (ECONOmical operation) (MSZ-FE18NA)

When ECONO COOL button is pressed in COOL mode, set temperature is automatically set 2°C higher.

Also the horizontal vane swings in various cycle.

SWING operation makes you feel cooler than set temperature. So, even though the set temperature is higher, the air

conditioner can keep comfort. As a result, energy can be saved.

To cancel this operation, select a different mode or press one of the following buttons in ECONO COOL operation:

ECONO COOL, VANE CONTROL or POWERFUL button.

(

) POWERFUL ( ) operation

The air conditioner automatically adjusts the fan speed and the set temperature, and operates the POWERFUL mode.

The POWERFUL mode is automatically released 15 minutes after operation starts, and the operation mode returns

to the mode prior to POWERFUL operation. To manually cancel this operation, select a different mode or press

POWERFUL /or ECONO COOL(MSZ-FE18NA) button.

2. Vertical vane

(1) Vane motor drive

These models are equipped with a stepping motor for the vertical vane. The rotating direction, speed, and angle of the

motor are controlled by pulse signals (approx. 12 V) transmitted from microprocessor.

(2) The vertical vane angle and mode change as follows by pressing WIDE VANE button.

MSZ-FE09NA MSZ-FE12NA

MSZ-FE18NA

(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 OPERATE/STOP (ON/OFF) button is pressed (POWER ON).

(b) When SWING is started.

(4) SWING MODE (

)

By selecting SWING mode with WIDE VANE button, the vertical vane swings horizontally.

The remote controller displays “ ”. Swing mode is cancelled when WIDE MODE button is pressed once again.

(SWING)

45SWING

(5) WIDE MODE ( ) (MSZ-FE18NA)

By selecting WIDE mode with WIDE VANE button, indoor fan speed becomes faster than setting fan speed on the

remote controller (

). The remote controller displays “ ”.

NOTE:

Indoor fan speed becomes faster than setting fan speed on the remote controller even when or is

selected.

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Mitsubishi Electric MSZ-FE12NA Service Manual Page 16

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