Mark HCNI 533, Техническое руководство

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19
EN
Automatic shut-off based on discharge temperature
If the compressor discharge temperature exceeds a certain level for a period of time, 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.
Sensor redundancy and automatic shut-off
• If one temperature sensor malfunctions, the air conditioner continues operation and displays the
corresponding error code, allowing for emergency use.
• When more than one temperature sensor is malfunctioning, 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.
4.3 Basic functions
4.3.1 Abbreviation
Unit element abbreviations:
Abbreviation Element
T1 Indoor room temperature.
T2 Coil temperature of evaporator.
T3 Coil temperature of condenser.
T4 Outdoor ambient temperature.
TS Set temperature.
Td Control target temperature.
TP Compressor discharge temperature.
In this manual, such as TCE1, TCE2... etc., they are well-setting parameter of EEPROM.
4.3.2 Fan Mode
When fan mode is activated:
•
The outdoor fan and compressor are stopped.
• Temperature control is disabled and no temperature setting is displayed.
• The indoor fan speed can be set to high, medium, low, or auto.
• The louver operations are identical to those in cooling mode.
• Auto fan: In fan-only mode, AC operates the same as auto fan in cooling mode with the
temperature set at 24°C.
4.3.3 Cooling Mode
Compressor Control
Cooling temperature compensation (
∆
T5) is a well-setting parameter of EEPROM. Its value ranges