Pr
oduct Featur
es
Page 10
1. Operation Modes and Functions
1.1 Abbreviation
Unit element abbreviations
Abbreviation
Element
T1
Indoor room temperature
T2
Coil temperature of evaporator
T3
Coil temperature of condenser
T4
Outdoor ambient temperature
1.2 Safety Features
Compressor three-minute delay at restart
Compressor functions are delayed for up to one minute
upon the first startup of the unit, and are delayed for up
to three minutes upon subsequent unit restarts.
Zero crossing detection error protection
If AC can not detect zero crossing signal for 4 minutes or
the zero crossing signal time interval is not correct, the unit
will stop and the LED will display the failure. The correct
zero crossing signal time interval should be between
6-13ms.
Automatic shutoff based on fan speed
If the indoor fan speed registers below 300RPM for 2
minutes, the unit ceases operation and the corresponding
error code is displayed on the indoor unit.
Current protection
The current exceeds setting value for certain time, the
compressor and outdoor fan will shut off.
Indoor fan delayed operation
• When the unit starts, the louver is automatically
activated and the indoor fan will operate after a period
of 4 seconds.
• If the unit is in heating mode, the indoor fan is
regulated by the anti-cold wind function.
Sensor redundancy and automatic shutoff
If one temperature sensor malfunctions, the air conditioner
ceases operation.
Refrigerant leakage detection
This function is active only when cooling mode is selected.
It will detect if the compressor is being damaged by
refrigerant leakage or by compressor overload. This is
measured using the coil temperature of evaporator T2
when the compressor is in operation.
1.3 Digital Display
Unit display functions
Function
Display
Temperature
Set temperature value
Temperature
(fan and Drying
mode)
Room temperature
Activation of Timer
ON, Fresh, Swing,
Turbo, or Silent
(3s)
Cancellation of
Timer OFF, Fresh,
Swing, Turbo, or
Silent
(3s)
Defrost
Warming in heating
mode
Self-clean (available
on select units only)
Heating in room
tempurature
under 8°C
