Service manual

During “DRY” mode operation, the “DRY indicator for dehumidification operation will be on. The indoor
fan will operate in LOW speed within the range of a certain temperature. The dehumidification effect
under this mode is more obvious than the operation under COOL mode, as well as more energy saving.
During “HEAT” mode operation, the “HEAT” indicator for heating operation will be on. The temperature
must be set to a value higher than the current room temperature. If not, this air conditioning system will
not be activated for HEAT operation.
During “FAN” mode operation, the “FAN” indicator will be on. During “AUTO” mode operation, the
“AUTO” indicator will be on. The unit will automatically adjust its operational mode according to the
environment temperature.
During HEAT mode operation, if the outdoor temperature is low while the humidity is high, there will be
frost on the outdoor unit, which will lower heating effect. In this case, the controller will automatically
activate the defrosting cycle, with the “DEFROST” indicator displayed.
NOTE: Cooling-only unit does not have HEAT mode. The AUTO mode will be deactivated after
SAVE-ENERGY setting.
7.2.6 Timer setting (Fig. 7-7)
Under turn-off state, timed turn-on can be set, while under turn-on state, timed turn-off can be set. Press
TIMER button to enter into timer setting status, in which case the TIMER indicator will blink and the user
may increase or decrease the timer setting by pressing ▲ or ▼. Press TIMER again to activate the timer
function. The unit starts to count the time. When the unit is under timed status, you may press TIMER to
cancel the timer function.
The setting range is 0.5-24 hours.
7.2.7 Fresh Air Setting (Fig. 7-8)
Under turn-off state, you may press and hold FAN button for 5 seconds to call out the fresh air setting, in
which case the FRESH indicator on the LCD will blink. The existing FRESH mode will be displayed in the
temperature setting area. The user may press ▲ or ▼ to adjust the FRESH mode.
The meaning of the number is as below:
00
－一 Always under closed status.
01――The fresh air will open 5 minutes for every 60-min. continuous operation of the unit.
02――The fresh air will open 12 minutes for every 60-min. continuous operation of the unit.
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