Carrier 40MBFQ Owner's Manual page 12

CLEANING, MAINTENANCE AND TROUBLESHOOTING (CONT)
Carbon Filter
Fig. 24 − Carbon Filter
4. Clean the air filter. A vacuum cleaner or pure water may
be used to clean the air filter. If the dust accumulation is
excessive, please use soft brush and mild detergent to
clean it and dry out in cool place.
IMPORTANT: The air−in side should face up when using vacuum
cleaner. The air−in side should face down when using water.
5. Set the air filter and the carbon filter as they were and close
the front panel. Operating the unit without the air filters may
result in equipment damage or even failure as dust will
accumulate inside the indoor unit.
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
Clean Air Filter*
Replace Carbon Filter
Change Remote Controller Batteries
OUTDOOR UNIT
Clean Outdoor Coil from Outside
Clean Outdoor Coil from Inside†
Blow Air Over Electric Parts†
Check Electric Connection Tightening†
Clean Fan Wheel†
Check Fan Tightening†
Clean Drain Pans†
* Increase frequency in dusty zones.
{ Maintenance to be carried out by qualified service personnel. Refer to the Installation Manual
Indoor Unit Front Panel
To clean the front panel 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
controller.
System Operation Recommendations
The items outlined in the following list help to assure proper
system operation:
S Replace both remote controller batteries at the same time.
S Point the remote controller 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 controller
transmissions.
S Do not block air intakes and outlets on the indoor or outdoor
units.
Energy Saving Recommendations
The following recommendations adds 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.
Troubleshooting
Refer to Table 3 before contacting your local dealer.
Table 2 – Periodic Maintenance
EVERY MONTH
S
EVERY MONTH
12
EVERY 6 MONTHS
EVERY 6 MONTHS
S
EVERY YEAR
S
S
S
EVERY YEAR
S
S
S
S
S
S