Carrier 40MBC-03 Owner's Manual page 11

Maintenance
CAUTION
!
S Before you clean the air conditioner, be sure the power
supply is off.
S Check if the wiring is not broken off or disconnected.
S Use a dry cloth to wipe the indoor unit and remote
controller.
S A wet cloth may be used to clean the indoor unit if it is very
dirty.
S Never use a damp cloth on the remote controller.
S Do not use a chemically treated duster for wiping or leave
such material on the unit for long. Doing so may damage or
fade the unit surface.
S Do not use benzine, thinner, polishing powder, or similar
solvents for cleaning. These may cause the plastic surface to
crack or deform.
Maintenance after a Long Stop Period (at the
beginning of the season)
S
Check and remove everything that might be blocking
inlet and outlet vents of indoor units and outdoor units.
S
Clean air filters and casings of indoor units. Refer to
"Cleaning the Air Filter" for details on how to proceed
and make sure to install the cleaned air filters back in the
same position.
S
Turn on the power at least 12 hours before operating the
unit to ensure smoother operation. As soon as the power
is turned on, the remote controller displays appear.
Maintenance before a Long Stop Period (at the
end of the season)
S
Let the indoor units run in fan only operation for about
half a day to dry the interior of the units.
S
Clean the air filters and casings of the indoor units. Refer
to "Cleaning the Air Filter" for details on how to
proceed. Be sure to install cleaned air filters back in the
same position.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
When cleaning the front panel, do not use water hotter
than 105_F (40.6_C) and do not pour water onto the fan
coil. Do not use abrasive or petroleum based cleaners as
they may damage the front panel.
Indoor Unit Grille
To clean the grille on the indoor unit, wipe the outside with a soft,
dry cloth.
Preparing for Extended Shutdown Period
Clean the filters and reposition them in the unit. Operate the unit
in Fan only mode for 12 hours to dry all internal parts.
Turn main power supply off and remove batteries from the remote
control.
System Operation Recommendations
The items outlined in the following list help to assure proper
system operation:
S Replace both remote control batteries at the same time.
S Point the remote control toward the unit display panel when
transmitting a command.
S Keep doors and windows closed while unit is operating.
S Contact an authorized service representative if a problem arises
that cannot be easily resolved.
S Do not perform cleaning or maintenance activities while the
unit is on.
S Keep the display panel on the unit away from direct sunlight
and heat as this may interfere with remote control
transmissions.
S Do not block air intakes and outlets on the indoor or outdoor
units.
Energy Saving Recommendations
The following recommendations will add greater efficiency to the
ductless system:
S Select a comfortable thermostat setting and leave it at chosen
setting. Avoid continually raising and lowering the setting.
S Keep the filter clean. Frequent cleaning may be necessary
depending on indoor air quality.
S Use drapes, curtains or shades to keep direct sunlight from
heating the room on very hot days.
S Limit the unit's run time by using the TIMER function.
S Do not obstruct the air intake on the front panel.
S Turn on the air conditioning unit before the indoor air becomes
too uncomfortable.
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