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(2) Mode change
In case of the following conditions, the operation mode is changed.
COOL mode changes to HEAT mode when 15 minutes have passed with the room temperature 2 - 4°F (1 - 2°C)
below the set temperature.
HEAT mode changes to COOL mode when 15 minutes have passed with the room temperature 2 - 4°F (1 - 2°C)
above the set temperature.
In the other cases than the above conditions, the present operation mode is continued.
NOTE1: Mode selection is performed when multi standby (refer to NOTE2) is released and the unit starts operation with
ON-timer.
NOTE2: When two or more indoor units are operating simultaneously, the indoor unit, which is operating in AUTO (
might not be able to change over the operating mode (COOL ↔ HEAT) and becomes the standby state.
(3) Indoor fan control/ Vane control
As the indoor fan speed and the horizontal vane position depend on the selected operation mode, when the operation
mode changes over, they change to the exclusive ones.
2-5. OUTDOOR FAN MOTOR CONTROL
Fan speed is switched according to the compressor frequency.
Fan speed
Down
High
Low
Min.
Compressor frequency
2-6. AUTO VANE OPERATION
1. Horizontal vane
(1) Cold air prevention in HEAT operation (MUZ)
When any of the following conditions occur in HEAT operation, the vane angle changes to Horizontal position automati-
cally to prevent cold air blowing on users.
Compressor is not operating.
Defrosting is performed.
Indoor coil thermistor temperature does not exceed 102°F (39°C) within about 3 minutes after compressor starts.
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.
(2) ECONO COOL (
When ECONO COOL button is pressed in COOL mode, set temperature is automatically set 3.6°F (2°C) higher than that
in COOL mode.
Also the horizontal vane swings in various cycle according to the temperature of indoor heat exchanger (indoor coil
thermistor).
SWING operation makes you feel cooler than set temperature. So, even though the set temperature is higher than that
in COOL mode, 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 or VANE CONTROL button.
Up
Max.
) operation (ECONOmical operation) (Excluding MSZ-FD and MSZ-FE09/12)
<Relation between compressor frequency and fan speed>
MUZ-A MUY-A
MUZ-FD
MUZ-FE09/12
MUZ-GA MUY-GA
MUZ-GE12/15/18 MUY-GE12/15/18
MUZ-D MUY-D
MUZ-GE09 MUY-GE09
MUZ-FE18
MUZ-GE24 MUY-GE24
11
Compressor frequency (Hz)
Down
Up
33
44
39
54
33
43
),
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