11
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 2).
CUT HAZARD
Failure to follow this caution may result in personal injury.
The coil fins are very sharp. Use caution when cleaning.
Always wear safety protection.
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 the front panel.
A150660
Fig. 15 − Open the Front Panel
2. Remove the air filter.
A150661
Fig. 16 − Remove the Air Filter
3. Remove the carbon filter. Hold the frame’s tabs and remove
the four claws. The carbon filter can be renewed by
washing it with water once every 6 months. It is
recommended to replace the carbon filter every year.
Carbon Filter
A150680
Fig. 17 − 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.
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.
CAUTION
!
