Do you have a question about the Hiyasu HS-9U2IM and is the answer not in the manual?
Lists key features like powerful cooling/heating, low voltage start-up, anti-icing, auto-defrost, and protection.
Details technical specifications for Alfa series indoor and outdoor units, including capacity, power, and dimensions.
Provides technical specifications for outdoor units, covering cooling/heating capacity, compressor, and fan motor details.
Illustrates the physical dimensions of the 7/9K and 12K indoor units with detailed diagrams.
Presents the physical dimensions of the outdoor unit with detailed diagrams.
Shows the refrigeration circuit for the inverter binary type, detailing components like the compressor and expansion valves.
Outlines valid indoor unit combinations for specific outdoor models, with capacity limits.
Provides a detailed wiring diagram for the indoor unit, showing connections to the main board and sensors.
Presents the wiring diagram for the outdoor unit, illustrating connections for the compressor, valves, and boards.
Specifies the working environment for electronic controls, including input voltage, frequency, and current limits.
Explains the function of each indicator (AUTO, TIMER, TEMP, OPERATION, SLEEP) on the indoor unit's display.
Describes the digital display tube on the outdoor PCB and its functions during standby, operation, and error states.
Details how to use the check switch for monitoring compressor frequency, running mode, capacity demand, and ambient temperature.
Outlines various protection functions, including compressor restart delay, discharge temperature, voltage, and fan speed control.
Explains fan speed settings (high/mid/low/Auto) available for the fan-only operation mode.
Details indoor fan speed control based on temperature difference and anti-freezing protection for the evaporator.
Describes fixed low fan speed and low room temperature protection during dehumidifying mode.
Covers indoor fan actions, anti-cold wind control, and auto wind settings for heating mode.
Details fan speed control for anti-cold wind and auto wind, plus evaporator high-temperature protection.
Explains the conditions for initiating and ending defrosting, and the actions taken during defrost.
Describes how the unit automatically selects cooling, heating, or fan-only mode based on temperature differences.
Explains mode changes and specific operations triggered by the manual switch button.
Details the timer's maximum length, minimum resolution, and the functions of Timer On/Off and Timer Off/On.
Covers sleep mode operation for cooling, heating, auto modes, and the auto restart function after power failure.
Describes when the plasma function activates and deactivates, related to indoor fan operation and front panel status.
Explains how the unit handles conflicts when indoor units are set to different modes (cooling, heating, fan) and priority rules.
Warns about stored electrical charge in capacitors on the PCB and the need for discharge before maintenance.
| Type | Split System |
|---|---|
| Cooling Capacity | 9000 BTU/h |
| Power Supply | 220-240V, 50Hz |
| Energy Efficiency Ratio (EER) | 3.21 |
| Coefficient of Performance (COP) | 3.61 |
| Refrigerant | R410A |
| Operating Temperature (Heating) | -7-24°C |
| Noise Level (Indoor) | 38 dB(A) |
| Weight (Indoor Unit) | 8 kg |
| Weight (Outdoor Unit) | 25 kg |
| Operating Temperature (Cooling) | 18-43°C |
| Noise Level (Outdoor) | 50 dB |
| Dimensions (Outdoor Unit) | 700 x 540 x 250 mm |