A.In Heating Mode: ( 
)
(1)When the room temperature drops below 46°F, Heating Operation will begin.
(2)When the room temperature rises to above 53°F, Heating Operation will stop.
The above actions will repeat so that the room temperature is maintained at about 50°F.
Room
Temperature (°F)
53 |
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50 |
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46 |
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(1) |
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| Heating |
| Time | |
| Heating | |||
| starts | stops | ||
B. In Cooling Mode: ( 
)
(1)When the room temperature rises above 89°F, Cooling Operation will begin.
(2)When the room temperature drops below 82°F, Cooling Operation will stop.
The above actions will repeat so that the room temperature is maintained at about 86°F.
SPECIAL REMARKS 
‘‘DRY’’ ( 
) Operation
How it works?
•Once the room temperature reaches the level that was set, the unit’s operation frequency is changed automatically.
•During DRY operation, the fan speed automatically runs at lower speed for providing a comfortable breeze.
•‘‘DRY’’ operation is not possible if the indoor temperature is 59 °F or less.
Heating (
) Operation
Heating performance
•When High power operation 
, Fan speed Automatic operation 
, HIGH 
or MEDIUM 
has been changed to Fan speed
LOW 
, Quiet operation 
or Night Setback 
, the fan speed may not be reduced to the desired setting immediately but rather it may be reduced slowly in steps due to the operating status of the air conditioner. (A maximum of 5 minutes are required for the change to be completed.)
•Because this air conditioner heats a room by drawing in the heat of the outside air (heat pump system), the heating efficiency will fall off when the outdoor temperature is very low. If sufficient heat cannot be obtained with this air conditioner, use another heating appliance together with it.
Defrosting
Room
Temperature (°F)(1)
89
86
82(2)
Cooling Cooling
starts stops
Time
•When the outdoor temperature is low, frost or ice may form on the heat exchanger coil, reducing heating performance. When this happens, a microcomputer defrosting system operates. At the same time, the fan on the indoor unit stops and the OPERATION lamp lights red and orange alternately until defrosting is completed. Heating operation restarts after several minutes. (This interval will vary slightly depending upon the outdoor temperature and the way in which frost forms.)
Cold draft prevention
• For several minutes after the start of heating operation, the indoor |
fan runs at a lower speed until the indoor heat exchanger coil has |
warmed up sufficiently. However, the fan may remain stopped when |
•Unoccupied Mode triggers Heating or Cooling Operation in response to the room temperature, but when this happens, the remote control unit will continue to display the Operation mode set by the user.
•If the room temperature rapidly changes, the room temperature may get over the upper or lower limit when the unoccupied function is activated.
NOTE
•The remote control unit should be used in the location specified in “REMOTE CONTROL UNIT INSTALLATION POSITION” on page 8.
•The air conditioner’s stop order (stated in (2) / above) is valid only when the unoccupied function is operated.
the room temperature is low. This is because the COLD DRAFT |
PREVENTION SYSTEM is in operation. |
Cooling ( 
) operation
•Sometimes the indoor unit may not get to the set fan speed such as LOW under cool operation at very low outdoor temperatures due to the indoor unit being protected from ice or frost.
Power failure during operation
•In the event of power failure, the unit will stop. When the power is resumed, the unit will restart automatically in approximately
5 minutes by the remote control unit.
If the remote control unit is on and left in a location where the unit can receive a signal, then the unit will automatically restart in approximately 5 minutes of power being restored.
Clicking Sound
Clicking sound is heard from the air conditioner
•In heating or cooling operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking sound may occur. This is normal, and the sound will soon disappear.
Remote Control Unit
•The remote control unit sends the setting condition to the air conditioner regularly at five minute intervals.
12 | |
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