Carrier ROOM AIR CONDITIONER User Manual page 23

Operation mode selection
While simultaneously operating two indoor units or more, make sure the operation modes will
not conflict with each other. The heat mode claims precedence over all other modes. If the unit
intially started operates under heat mode, the other units can operate under heat mode only.
For example: If the unit intially started operates under cool(or fan) mode, the other units can
operate under any mode except heat. If one of the unit selects heat mode, the other operating
units will stop operation and diplay P5 (For the units with display window only) or the Auto and
Operation indication light flash rapidly, the Defrost indication light turn off, the Timer indication
light remain on(For the units without display window), or the Defrost and Alarm indication light(
if applicable) illuminate, the Operation indication light flashes rapidly and the Timer indication
light turns off ( For the Floor and standing type).
Optimal operation
To achieve optimal performance, please note the following:
Adjust the air flow direction correctly so that it is not directed on people.
Adjust the temperature to achieve the highest comfort level. Do not adjust the unit to excessive
temperature levels.
Close doors and windows on COOL or HEAT modes, or performance may be reduced.
Use TIMER ON button on the remote controller to select a time you want to start your air conditioner.
Do not put any object near air inlet or air outlet, as the efficiency of the air conditioner may be reduced
and the air conditioner may stop running.
Clean the air filter periodically, otherwise cooling or heating per formance may be reduced.
Do not operate unit with horizontal louvre in closed position.
Suggestion: For the unit adopts an Electric Heater, when the outside ambient temperature is
O
below 0 C, we strongly recommend you to keep the machine plugged in order to guarantee it
running smoothly.
OPERATING INSTRUCTIONS
22