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Series 4 Models: “Wall” Type Top Class R32 Refrigerant AC
5. OPERATION MODES AND FUNCTIONS
Temperature values abbreviations:
Abbreviation
Element
T1
Indoor room temperature
T2
Coil temperature of evaporator
T3
Coil temperature of condenser
T4
Outdoor ambient temperature
TS
Set temperature
TP
Compressor discharge temperature
5.1 Abbreviation
5.2 Safety Features
Compressor 3-minute delay at restart
Compressor functions are delayed for up to 1 minute upon
the first startup of the unit, and are delayed for up to 3
minutes upon subsequent unit restarts.
Temperature protection of compressor top
The unit will stop working when the compressor top temp.
protector cut off, and will restart after the compressor top
temp. protector restart.
Automatic shut-off based on discharge temperature
If the compressor discharge temperature exceeds 108°C
for 5 seconds, the compressor ceases operation.
Automatic shut-off based on fan speed
If the indoor fan speed registers below 300RPM for an
extended period of time, the unit ceases operation and the
corresponding error code is displayed on the indoor unit.
Inverter module protection
The inverter module has an automatic shut-off mechanism
based on the unit’s current, voltage, and temperature. If
automatic shut-off is initiated, the corresponding error
code is displayed on the indoor unit and the unit ceases
operation.
Indoor fan delayed operation
•
When the unit starts, the louver is automatically activated
and the indoor fan will operate after a period of 7 seconds.
•
If the unit is in heating mode, the indoor fan is regulated
by the anti-cold wind function.
Compressor preheating
Preheating is automatically activated when T4 sensor is
lower than 3°C.
Sensor redundancy and automatic shut-off
•
If one temperature sensor malfunctions, the air conditio-
ner continues operation and displays the corresponding
error code, allowing for emergency use.
•
When more than one temperature sensor is malfunctio-
ning, the air conditioner ceases operation.
Refrigerant leakage detection
This function is active only when cooling mode is selec-
ted. 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.
