This document is an operation and installation manual for a Haier Convertible Type Air Conditioner. It covers various models including AC35S2SG1FA, AC50S2SG1FA, AC71S2SG1FA, AC90S2SH1FA, AC105S2SH1FA, AC125S2SK1FA, and AC140S2SK1FA.
Function Description
The Haier Convertible Type Air Conditioner is designed for cooling, heating, dehumidifying, and ventilation of rooms in ordinary dwellings. It offers automatic operation modes for both cooling-only and heat & cool types. In automatic cooling mode, the unit selects either cooling or dry mode based on the thermostat setting and actual room temperature. For heat & cool type units, it can operate in heating, cooling, or blow modes automatically.
A "SLEEP" function is available for both cooling and heat & cool models. In cooling or dry mode, when the SLEEP button is pressed, the thermostat setting gradually rises during operation, and the unit automatically turns off when the set time is reached. In heating mode, the thermostat setting gradually lowers during operation, and the unit turns off automatically after the set time.
The unit is controlled by a Wireless Remote Control Unit (YR-H50) for convenient operation. For wired control type units, the unit status is checked via the wired controller.
Important Technical Specifications
Refrigerant: The appliance is filled with R32 refrigerant, which has a Global Warming Potential (GWP) of 675. For R410A models, the GWP is 2088. The manual emphasizes that only the specified refrigerant (R32) should be used for installation, moving, or repairing.
Maximum Working Pressure: The maximum working pressure is 4.3 MPa, which should be considered when connecting the outdoor unit to the indoor unit.
Sound Pressure Level: The A-weighted sound pressure level is below 70 dB.
Electrical Requirements:
- Breaker: The air conditioner requires an all-pole switch breaker with a distance of no less than 3mm between its two contacts, incorporated into the fixed wiring. A leakage explosion-proof breaker must be installed.
- Wiring: Copper wire only, with all cables having European authentication certificates. The power supply connects from the outdoor side. The connecting cable and power cable are self-provided, with a recommended connecting cable parameter of H05RN-F 4G 0.75mm².
- Power Supply:
- 1PH, 220-230V~, 50Hz for single-phase models.
- 3PH, 380-400V~, 50/60Hz for three-phase models.
- Circuit Breaker Capacity: The manual provides a table for selecting wire sizes and circuit protection, including switch breaker (A), overcurrent protector rated capacity (A), power source wire size (minimum mm²), earth leakage breaker (A), and leak current (mA) for various models. For example, AC35S2SG1FA and AC50S2SG1FA are listed, but specific values are left blank in the provided table.
- Fuse: If the fuse on the PC board is broken, it should be replaced with a type T 3.15A/250VAC fuse.
Temperature and Humidity Range:
- Cooling:
- Indoor temperature: max. DB/WB 32/23°C, min. DB/WB 18/14°C.
- Outdoor temperature: max. DB/WB 46/26°C, min. DB/WB 10/6°C.
- Heating:
- Indoor temperature: max. DB/WB 27°C, min. DB/WB 15°C.
- Outdoor temperature: max. DB/WB 24/18°C, min. DB/WB -15°C.
- Operating outside these ranges may trigger protection circuits or cause freezing and water leakage.
Connection Pipe Requirement:
- Liquid Side Diameter: 6.35mm for AC35S2SG1FA, AC50S2SG1FA; 9.52mm for AC71S2SG1FA, AC90S2SH1FA, AC105S2SH1FA, AC125S2SK1FA, AC140S2SK1FA.
- Gas Side Diameter: 9.52mm for AC35S2SG1FA; 12.7mm for AC50S2SG1FA; 15.88mm for AC71S2SG1FA, AC90S2SH1FA, AC105S2SH1FA, AC125S2SK1FA, AC140S2SK1FA.
- Maximum Length: 15m for AC35S2SG1FA; 20m for AC50S2SG1FA, AC71S2SG1FA; 30m for AC90S2SH1FA, AC105S2SH1FA, AC125S2SK1FA; 50m for AC140S2SK1FA.
- Maximum Height (between indoor and outdoor): 10m for AC35S2SG1FA, AC50S2SG1FA, AC71S2SG1FA; 20m for AC90S2SH1FA, AC105S2SH1FA; 30m for AC125S2SK1FA, AC140S2SK1FA.
Installation Dimensions:
- Suspension bolt pitch (L): 880mm for AC35S2SG1FA, AC50S2SG1FA; 1204mm for AC71S2SG1FA, AC90S2SH1FA, AC105S2SH1FA; 1530mm for AC125S2SK1FA, AC140S2SK1FA.
- Suspension bolt extension: 30 to 50mm outward.
- Ceiling opening for half-concealed installation: L mm (matching suspension bolt pitch).
- Drain pipe gradient: 1/50 to 1/100, no rises or traps.
- Drain pipe material: General hard polyvinyl chloride pipe (VP25), outside diameter 38mm.
- Drain pipe insulation: 8mm or over thick on the indoor side.
Usage Features
Controls: The indoor unit features an Operation Control Panel with indicator lamps for RUNNING, TIMER, and POWER, and an Emergency Switch. Some models may have a WIFI Indicator Lamp and a Display Indicator Lamp instead of RUNNING, TIMER, and POWER. A Remote Receiver is also present. For wired control units, the wired controller checks the unit state.
Fresh Air Intake: The air conditioner can be set up for fresh-air intake. This involves opening a knockout hole (top knockout hole for half-concealed installation), fastening a round flange (optional), and connecting a duct, which should then be sealed to prevent air leakage.
Safety Precautions:
- Installation: Must be performed by professional personnel according to local wiring regulations and national standards. Ground connection must be correct and reliable.
- Refrigerant Handling: Handling, installation, cleaning, servicing, and disposal of refrigerant must be carried out strictly as per specifications.
- General Safety: Do not obstruct ventilation openings, do not pierce or burn the unit, avoid direct cooling airflow for extended periods, do not insert objects into inlet/outlet, and keep children away from the unit.
- Malfunction: In case of malfunction (e.g., burning smell), stop operation immediately, turn off the circuit breaker, and consult authorized service personnel.
- Power: Disconnect from power source during service and when replacing parts. Turn off power when not using for extended periods.
Maintenance Features
Air Filter Cleaning:
- Pull filters upward from the Intake Grill.
- Clean dust from filters using a vacuum cleaner or by washing them.
- Allow filters to dry thoroughly in an area protected from sunlight.
- Re-attach filters to the Intake Grill until a click sound is heard.
Indoor Unit Maintenance:
- Regular Inspection: For extended use, regular inspection by authorized service personnel is recommended due to potential dirt accumulation reducing performance.
- Cleaning the Unit Body: Use water not hotter than 40°C. Avoid harsh abrasive cleansers, volatile agents (benzene, thinner), liquid insecticides, or hairsprays.
- Drying Internal Parts: If shutting down for a month or more, operate in Fan mode continuously for about half a day to thoroughly dry internal parts.
- Mildew-Resistant Filter: The air filter is treated to resist mildew growth for cleaner use and easier care.
Troubleshooting: The manual provides a comprehensive troubleshooting guide for common issues and error codes, including:
- Common Issues: Sounds of water flowing or cracking, smells, white fog/steam from indoor unit, unit switching to blowing operation in cooling mode, unit not restarting after stop (3-min-delay protection), no outlet air/fan speed change in dry mode, water/steam from outdoor unit in heating mode, indoor fan running after unit stop in heating mode.
- Air Conditioner Won't Start: Checks for power supply switch, city power, and leakage current breaker.
- Poor Cooling or Heating: Checks for correct operation control, dirty air filter, obstacles in inlet/outlet grill, horizontal louvers position (heating mode), open doors/windows, direct sunlight, unexpected heat sources, too many people in the room.
- Error Codes (Outdoor Unit): A detailed table lists various error codes (1 to 45) with their malfunction descriptions, diagnosis and analysis, and whether they are resumable or non-resumable. Examples include EEPROM malfunction, PIM hardware overcurrent, compressor overcurrent, communication abnormal, DC voltage high/low, compressor current sampling fault, discharge temperature too high, DC fan motor fault, various sensor abnormalities (defrosting temp, suction temp, ambient temp, discharge temp, drive module ambient temp, mid-condenser temp), PFC circuit loop high voltage, lack of refrigerant, 4-way valve converse abnormal, compressor motor desynchronizing, indoor pipe temperature too high/low, high/low pressure switch abnormal, outdoor condenser temperature too high, and system low pressure protection. LED3 on the outdoor control board indicates the outdoor error code.
Disposal:
- Old Air Conditioner: Ensure it's inoperative and safe. Unplug to prevent child entrapment. Contains refrigerants requiring specialized waste disposal. Contact local waste disposal center or authority for proper disposal and recycling. Ensure pipework is not damaged.
- Packaging: All packaging materials (cardboard, polyethylene wrapping bag, polyethylene foam pads) can be disposed of without danger to the environment and are recyclable.
- Waste Battery: Remote controller batteries must be removed and disposed of separately according to relevant local and national legislation.
The manual emphasizes that servicing should only be performed as recommended by the instructions.
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