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1. Coil frost prevention
Coil frost prevention is as same as COOL mode. (11-1.1.)
2. Low outside temperature operation
Low outside temperature operation is as same as COOL mode. (11-1.2.)
1. Cold air prevention control
When the compressor is not operating or is starting, and the temperature of indoor heat exchanger and/or the room
temperature is low or when defrosting is being done, the indoor fan will stop or rotate in Very Low speed.
11-2. 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 OPERATION SELECT button.
(3) The set temperature is determined from the initial room temperature.
11-3. HEAT ( ) OPERATION (MSZ)
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.
(2) Select HEAT mode with OPERATION SELECT button.
(3) Press TEMPERATURE buttons (TOO WARM or TOO COOL button) to select the desired temperature.
The setting range is 61 ~ 88°F.
1. Coil frost prevention
When the temperature of indoor heat exchanger becomes too low, the coil frost prevention mode works.
The indoor fan operates at the set speed and the compressor stops. This mode continues until the temperature of indoor
heat exchanger rises.
2. Low outside temperature operation
When the outside temperature lowers during cool mode operation, low outside temperature operation starts, and the
outdoor fan slows or stops.
11-1. 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 OPERATION SELECT button.
(3) Press TEMPERATURE buttons (TOO WARM or TOO COOL button)to select the desired temperature.
The setting range is 61 ~ 88°F.
2. High pressure protection
In HEAT operation the compressor operational frequency is controlled by the temperature of the indoor heat exchanger to
prevent the condensing pressure from increasing excessively.
3. Defrosting
Defrosting starts when the temperature of outdoor heat exchanger becomes too low.
The indoor/outdoor fans stop, the 4-way valve reverses, and the compressor starts.
This mode continues until the temperature of outdoor heat exchanger rises or the fixed time passes.
11-4. FAN( d )OPERATION (MSY)
(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 OPERATION SELECT button.
(3) Select the desired fan speed. When AUTO, it becomes Low.
Only indoor fan operates. Outdoor unit does not operate.
Mode
COOL mode of
"I FEEL CONTROL"
DRY mode of
"I FEEL CONTROL"
Initial room temperature
75°F or more
less than 75°F
11-5. “I FEEL CONTROL” ( ) OPERATION (MSY)
(1) Press OPERATE/STOP (ON/OFF) button on the remote
controller. OPERATION INDICATOR lamp of the indoor
unit turns on with a beep tone.
(2) Select “I FEEL CONTROL” mode with OPERATION
SELECT button.
(3) The operation mode is determined by the room tempera-
ture at start-up of the operation.
• Once the mode is fixed, the mode does not change by room temperature afterwards.
• Under the ON-TIMER ( ) operation, mode is determined according to the room temperature at the set time the
operation starts.
OB450B-2.qxp 07.5.14 4:17 PM Page 43