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3. Coil frost prevention
The operation is as same as coil frost prevention during COOL mode of "I FEEL CONTROL".
Indoor fan operates at the set speed and the compressor stops for 5 minutes, because protection (Coil frost prevention) has
the priority.
4. Outdoor fan control
Outdoor fan control is as same as during COOL mode of "I FEEL CONTROL".
8-2. COOL (
) OPERATION
(1) Press OPERATE/STOP (ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.
(2) Select COOL mode with the OPERATION
SELECT button.
(3) Press the TEMPERATURE buttons.
(TOO WARM or TOO COOL button) to select
the decided temperature.
The setting range is 16 ~ 31°C
w Indoor fan continues to operate regardless
of thermostat's OFF-ON at set speed.
w Coil frost prevention is as same as COOL
mode of "I FEEL CONTROL".
8-3. DRY (
) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor
unit turns on with a beep tone.
(2) Select DRY mode with the OPERATION
SELECT button.
(3) The microprocessor reads the room temper-
ature and determines the set temperature.
Set temperature is as shown on the right
chart.
Thermostat (SET TEMP.) does not work.
The other operations are same as DRY
mode of "I FEEL CONTROL".
(4) DRY operation will not function when the
room temperature is 13°C or below.
8-4. FAN (
) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor
unit turns on with a beep tone.
(2) Select FAN mode with the OPERATION SELECT button.
(3) Select the desired fan speed. When AUTO, it becomes Lo.
Only indoor fan operates.
Outdoor unit does not operate.
8-5. FAN MOTOR CONTROL
(1) Rotational frequency feedback control
The indoor fan motor is equipped with a rotational frequency sen-
sor, and outputs signal to the microprocessor to feedback
the rotational frequency. Comparing the current rotational frequen-
cy with the target rotational frequency
(Hi, Me, Lo), the microprocessor controls SR141 and adjusts fan
motor electric current to make the current rotational frequency
close to the target rotational frequency. With this control, when the
fan speed is switched, the rotational frequency changes smoothly.
(2) Fan motor lock-up protection
When the rotational frequency feedback signal has not output for 12 seconds, (or when the microprocessor cannot detect
the signal for 12 seconds) the fan motor is regarded locked-up. Then the electric current to the fan motor is shut off. 3
minutes later, the electric current is applied to the fan motor again. During the fan motor lock-up, the OPERATION INDI-
CATOR lamp flashes on and off to show the fan motor abnormality. (See page 28.)
18
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