Owner's Manual

9
Using the Ionizer Function — The ionizer
helps to eliminate odors in the conditioned space.
1. Press to activate the Ionizer
function.
2. Press again to turn off Ionizer
function.
Remote Control Address Selection — If two in-
door units are in the same room, one remote control can be
linked to one indoor unit, and the other remote control to the
other indoor unit, or both indoor units can be controlled with a
single remote control.
For more information, refer to the installation instructions.
Resetting the Remote Control — If the remote con-
trol is not functioning properly it can be reset by pressing the
reset button with a paper clip or tip of a pen.
Operating Conditions — Temperature ranges suitable
for unit operation are as follows.
If the unit operates above 59 to 90 F maximum temperature
conditions for a long period of time, system diagnostics may
modify the system operation to prevent damage to the system.
Time Delay — If unit operation is started after the power
is turned off, there will be a 3-minute time delay until the
compressor turns on.
When heating operation starts, hot air delivery may be
delayed due to a warm-up period.
Minimum Operation Time — In normal operation,
there is a minimum operation time of 5 to 7 minutes between
the compressor turning on and turning back off.
Heating Features — If the unit starts in Heating mode,
there may be a preheating period before the unit is ready to
deliver warm air.
Defrost Operation — In heating mode, if the outdoor
coil is frosted, the indoor fan and outdoor fan will turn off
while system removes the frost on the outdoor coil.
The system will automatically revert to normal operation
when frost is removed from the outdoor unit.
Auto Recovery — If the power fails while the unit is
operating, the unit memorizes the operating condition, and it
will start operation automatically when the power is restored.
Indoor Unit Frost Prevention in Cooling and
Dehumidification Mode —
If the unit operates at a
low ambient temperature, frost may appear on the indoor coil.
If the indoor coil temperature is near 32 F, the compressor’s
speed is reduced or stopped to protect the unit from frost.
CLEANING, MAINTENANCE
AND TROUBLESHOOTING
Periodic Maintenance —
Periodic maintenance is
recommended to ensure proper operation of the unit. Recom-
mended maintenance intervals may vary depending on the
installation environment, e.g., dusty zones, etc. Refer to
Table 2.
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.
MODE
INDOOR
(°F)
OUTDOOR
(°F)
Cool 59-90 14-115
Heat Max. 81 14- 75
Dehumidification 59-90 14-115
To avoid the possibility of electric shock, 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.
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.
The coil fins are very sharp. Use caution when cleaning
the coil fins to prevent unit damage and to avoid personal
injury.
°
°
F
F
(Cooling only or Dehumidification mode)
(Heating mode)
F
F
2
°
F
2
°
F
2
1
F
1
F
1
F
1
Fig. 10 — Set Temperature Levels