Product Features
 Page 85 
2.8  Timer Function 
• The timing range is 24 hours.
• Timer On. The machine turns on automatically at the 
preset time.
• Timer Off. The machine turns off automatically at the 
preset time.
• Timer On/Off. The machine turns on automatically at 
the preset On Time, and then turns off automatically 
at the preset Off Time.
• Timer Off/On. The machine turns on automatically at 
the preset Off Time and then turns off automatically at 
the preset On Time.
• The timer does not change the unit operation mode. 
If the unit is off now, it does not start up immediately 
after the “timer off” function is set. When the setting 
time is reached, the timer LED switches off and the 
unit running mode remains unchanged.
• The timer uses relative time, not clock time
2.9  Sleep Function
• The sleep function is available in cooling, heating, or 
auto mode.
• The operational process for sleep mode is as follows:
• When cooling, the temperature rises 1°C (to not 
higher than 30°C) every hour. After 2 hours, the 
temperature stops rising and the indoor fan is fixed to 
auto speed.  
• When heating, the temperature decreases 1°C (to 
not lower than 17°C) every hour. After 2 hours, the 
temperature stops decreasing and the indoor fan is 
fixed at auto speed. Anti-cold wind function takes 
priority.
2.10  Forced operation function
• Forced cooling mode:
The compressor and outdoor fan continue to run and 
the indoor fan runs at rated speed. After running for 30 
minutes, the AC will switch to auto mode with a preset 
temperature of 24°C
• Forced auto mode:
Forced auto mode operates the same as normal auto mode 
with a preset temperature of 24°C.
•  When any one of indoor units runs in forced 
cooling, it is designated as the master forced 
cooling unit. Other indoor units act as the slave 
forced cooling units. The slave forced cooling units 
cannot exit forced cooling mode until the master 
forced cooling unit does so. They then switch to 
cooling mode in low fan with the temperature set 
at 24°C.
• Forced defrosting mode:
• In the forced cooling mode (single heat 
engine for forced auto mode), press and hold 
the forced key for 5 seconds after release, 
immediately enter the forced frosting mode.
• When any one of indoor units runs in forced 
defrosting mode, the indoor fan is off and 
other indoor fans are off. The outdoor unit 
operates forced defrosting. 
2.11 Auto-Restart 
• The indoor unit has an auto-restart module that 
allows the unit to restart automatically. The module 
automatically stores the current settings (not including 
sleep mode) and, in the case of a sudden power 
failure, will restore those setting automatically within 3 
minutes after power returns.
• If the unit was in forced cooling mode, it will run in 
this mode for 30 minutes and turn to auto mode with 
temperature set to 24°C.
• If there is a power failure while the unit is running, the 
compressor starts 3 minutes after the unit restarts. If 
the unit was already off before the power failure, the 
compressor starts 1 minute after the unit restarts. 
2.12  Follow Me (Optional)
• If you press “Follow Me” on the remote, the indoor 
unit will beep. This indicates the follow me function is 
active. 
• Once active, the remote control will send a signal 
every 3 minutes, with no beeps. The unit automatically 
sets the temperature according to the measurements 
from the remote control.
• The unit will only change modes if the information 
from the remote control makes it necessary, not from 
the unit’s temperature setting.
2.13  Drain Pump Control (Optional)
• Use the water-level switch to control drain pump.
• The system checks the water level every 5 seconds.
• When the A/C operates in cooling (including auto 
cooling) or forced cooling mode, the pump begins 
running immediately and continuously until cooling 
stops.
• If the water level increases up to the control point, 
the LED displays an alarm code and the drain pump 
opens and continually monitors the water level. If 
the water level falls and LED alarm code is no longer