OWNER'S MANUAL Duct Free Split System - High Wall: DFS4(A/H), DFC4(A/H)3, DFF4(A/H)H
421 02 9301 00 9
CLEANING, MAINTENANCE, AND TROUBLESHOOTING
ELECTRICAL SHOCK HAZARD
Failure to follow this caution may result in personal
injury or death.
Always turn off power to the system before
performing any cleaning or maintenance to the
system. Turn off the outdoor disconnect switch
located near outdoor unit. Be sure to disconnect
indoor unit if on a separate switch.
CAUTION
!
EQUIPMENT DAMAGE/OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper unit operation.
Operating the system with dirty air filters may damage
the indoor unit and could cause reduced cooling
performance, intermittent system operation, frost
build-up on indoor coil or blown fuses.
CAUTION
!
Periodic Maintenance
Periodic maintenance is recommended to ensure proper
operation of the unit. Recommended maintenance intervals
may vary depending on the installation environment, e.g.,
dusty zones, etc. Refer to Table 1.
CUT HAZARD
Failure to follow this caution may result in personal
injury. The coil fins are very sharp. Use caution when
cleaning.
CAUTION
!
Cleaning the Coil
Clean the coil at the beginning of each cooling season, or
when necessary. Use a vacuum cleaner or a long-bristle
brush to avoid damage to the coil fins.
Air Filters
Remove and clean the air filters once a month.
NOTE:
If air filters show signs of excessive wear or are torn,
they must be replaced. Contact your local dealer for
replacement filters.
1. Open front panel on unit.
2. Pull filters down to remove.
3. Vacuum filters.
4. Clean with warm water.
5. Shake filter to remove excess water and dry
thoroughly.
6. Replace filter by sliding filter behind front grille until
filter snaps in place.
7. Close front panel on unit.
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 (40.56
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.
CAUTION
!
Indoor Unit Front Panel
To clean the front panel on the indoor unit, wipe the outside
with a soft, dry cloth. If necessary, a mild liquid detergent
can be applied and wiped off with a 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 will help to assure
proper system operation:
Replace both remote control batteries at the same time.
Point the remote control toward the unit display panel
when transmitting a command.
Keep doors and windows closed while unit is operating.
Contact an authorized service representative if a
problem arises that cannot be easily resolved.
Do not perform cleaning or maintenance activities while
unit is on.
Keep display panel on unit away from direct sunlight and
heat as this may interfere with remote control
transmissions.
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 ductfree system:
Select a comfortable thermostat setting and leave it at
chosen setting. Avoid continually raising and lowering
the setting.
Keep unit filter clean. Frequent cleaning may be
necessary depending on indoor air quality.
Use drapes, curtains or shades to keep direct sunlight
from heating room on very hot days.
Do not obstruct air intake on front panel.
Turn on air conditioning before indoor air becomes too
uncomfortable.
Troubleshooting
Refer to Table 2 before contacting your local dealer.
