Product Info
The ARUN/ARNU Series is a 10HP heat pump air conditioner system. It includes an outdoor unit and various indoor unit models such as ceiling cassette, art cool, and ceiling concealed duct types. The system uses R410A refrigerant and features advanced controls and protection functions.
Preventive Maintenance Schedule
Every 8000 hours:
- Replace compressor oil
- Clean heat exchanger
Daily:
- Check for refrigerant leakage
- Check for slack in power or transmission cables
Every 6 months:
- Check insulation resistance of compressor
- Check that high/low pressure valves are fully opened
Parts List
- Compressor: Pressurizes the refrigerant to high temperature and pressure (Part Number: Not Available)
- Inverter Fan Motor: Adjusts outdoor fan speed by varying the frequency from 0-65Hz (Part Number: Not Available)
- Outdoor LEV: Adjusts refrigerant flow based on outdoor unit superheat level (Part Number: Not Available)
- Subcooler LEV: Adjusts refrigerant flow based on excessive cold heat exchanger outlet temperature (Part Number: Not Available)
- Oil Pass Valve: Not Available (Part Number: Not Available)
- Oil Equalization Valve: Not Available (Part Number: Not Available)
- Hot Gas Bypass Valve: Stabilizes the system by supplying high pressure gas to the low pressure part (Part Number: Not Available)
- 4 Way Valve: Switches between cooling and heating modes (Part Number: Not Available)
- Outdoor Check Valve: Allows refrigerant flow in cooling mode (Part Number: Not Available)
- Discharge Check Valve: Prevents reverse refrigerant flow into the compressor (Part Number: Not Available)
- High Pressure Switch: Mechanically stops the compressor at high pressure limit (Part Number: Not Available)
- High Pressure Sensor: Measures high pressure of the system (Part Number: Not Available)
- Low Pressure Sensor: Measures low pressure of the system (Part Number: Not Available)
- Heat Exchanger Temperature Sensor: Measures outdoor heat exchanger temperature for control (Part Number: Not Available)
- Compressor Discharge Temperature Sensor: Measures compressor discharge temperature for protection and control (Part Number: Not Available)
- Air Temperature Sensor: Measures outdoor air temperature (Part Number: Not Available)
- Suction Temperature Sensor: Measures refrigerant suction pipe temperature for superheat control (Part Number: Not Available)
- Liquid Tube Temperature Sensor: Measures refrigerant liquid pipe temperature for subcool control (Part Number: Not Available)
- Subcooler Outlet Temperature Sensor: Measures subcooler outlet temperature for superheat control (Part Number: Not Available)
- Subcooler Inlet Temperature Sensor: Measures subcooler inlet temperature for superheat control (Part Number: Not Available)
Product Specs Sheet
- Cooling Capacity: 28,000W (95,500 Btu/h)
- Heating Capacity: 31,500W (107,500 Btu/h)
- Dimensions (W*H*D): 1400*1790*650 mm (55.1*70.5*25.6 inch)
- Net Weight: 350 kg (771.6 lbs)
- Refrigerant: R410A
- Power Supply: 3Ø, 380 ~ 415V, 50Hz
Troubleshooting
- Compressor not operating:
- Check compressor insulation resistance
- Check compressor windings for open or short circuit
- Outdoor fan not operating:
- Check fan motor connector connection
- Check for fan lock, remove any obstructions
- Replace fan motor if defective
- LEV not operating properly:
- Check LEV coil resistance
- Check for LEV lock or clogging, replace LEV if defective
- High pressure error:
- Check indoor/outdoor fan operation
- Check for refrigerant overcharge, adjust as needed
- Check LEV, 4-way valve, and other components
- Low pressure error:
- Check indoor/outdoor fan operation
- Check for refrigerant leakage, add refrigerant as needed
- Check LEV and other components
Please
note that any procedure, checklist, or other document available on Limble is provided for general education and
information only and does not constitute legal, medical, or financial advice. Limble makes the materials available
AS IS and AS PROVIDED, without warranties of any kind. By downloading or using any such materials, you assume the
risk that they may not be appropriate for your specific situation and agree that you are solely responsible for any
such use, including compliance with applicable law and with meeting any conditions of product warranties. It is
recommended to contact OEM for the most accurate information.
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