This document is a service manual for the Haier ON/OFF Wall Mounted Type ARC-Series air conditioners, specifically models HSU-22L/HEA03 and HSU-22LEA03/HSU-22HEA03. It provides detailed information on functions, specifications, installation, and maintenance.
Function Description
The Haier ARC-Series air conditioners offer a range of functions designed for user comfort and convenience:
- Healthy Negative Ion: Generates negative ions to enrich the indoor air quality.
- Child Lock: Prevents unintended operation by children.
- 24-Hour Timer: Allows users to program the unit to turn on or off at specific times.
- Auto Restart: Automatically resumes previous operation settings after a power outage.
- Easy Clean Design: Features a panel that is easy to wash and airflow vents that can be detached for cleaning.
- Intelligent Air: Utilizes twin-blade technology to adjust airflow, preventing direct drafts.
- Anti-Mold Filter: Catches small particles and effectively removes unpleasant odors.
- Sleep Mode: Adjusts temperature and indoor noise levels for a more comfortable night's sleep.
- 4 Fan Settings: Offers Low, Medium, High, and Auto fan speed options.
- Auto Mode: Automatically adjusts to the last fixed operation mode.
- Power Mode: Provides quick cooling or heating.
- Soft Mode: Operates at a lower noise level.
- Negative Ion Filter: Generates negative ions.
- Constant Temperature Dehumidification: Dehumidifies the room while maintaining a constant temperature (not available on all models).
The unit also features comprehensive control specifications, including:
- Automatic Running Mode: Determines the operating mode (cooling or heating) based on current room temperature. A 15-minute delay is observed before switching between cooling and heating modes.
- Indoor Temperature Control: Allows temperature settings between 16°C and 30°C with a precision of ±1°C. The compressor has a 2-minute delay after starting before temperature sensor control is active.
- Cooling Mode: Compressor and outdoor fan motor operate when room temperature (Tr) is above set temperature (Ts). When Tr falls below Ts, the compressor and outdoor fan motor turn off.
- Heating Mode: Compressor, four-way valve, and outdoor fan motor operate when Tr is less than or equal to Ts, with a 4°C compensation added after compressor start.
- Dehumidifying Mode: Operates continuously when Tr is above Ts + 2°C. Intermittent operation occurs when Tr is between Ts and Ts + 2°C.
- High Temperature Expiration Protection: Prevents damage by stopping the compressor and outdoor fan motor if the coil pipe temperature exceeds 64°C (cooling) or 72°C (heating).
- Defrosting: Intelligentized and sensor-based defrosting mechanisms are implemented to prevent ice buildup on the indoor heat exchanger.
- Timer Function: Allows setting a 24-hour timer for unit on/off.
- Sleep Function: Adjusts temperature and fan speed during sleep for enhanced comfort.
- Emergency Switch Input: Provides a manual override for basic operation in case of remote controller malfunction.
- Test Run: A diagnostic mode that bypasses certain sensor controls for testing purposes.
- Memory Function: Retains previous settings after a power down.
- Alarm from Indoor Fan Motor: Triggers an alarm if the indoor fan motor impulse is not detected after 2 minutes of operation.
- Force Operation: Allows for forced cooling or heating for a set duration.
Important Technical Specifications
The manual provides detailed specifications for both indoor and outdoor units.
Indoor Unit (HSU-22LEA03 / HSU-22HEA03):
- Capacity Rated: 6.0 kW (Cooling), 6.0 kW (Heating for LEA03), 6.7 kW (Heating for HEA03).
- Moisture Removal: 2.5 L/h.
- Running Current (Rated): 11.0 A (Cooling), 11.0 A (Heating for LEA03), 11.8 A (Heating for HEA03).
- Power Consumption Rated: 2250 W (Cooling), 2300 W (Heating for LEA03), 2450 W (Heating for HEA03).
- EER/COP: 2.67 (Cooling), 2.67 (Heating for LEA03), 2.61 (Heating for HEA03).
- Piping Connections (external diameter): Liquid Φ 9.52 mm, Gas Φ 15.88 mm, Drain Φ 16 mm.
- Max. Piping Length: 15 m.
- Max. Level Difference: 5 m.
- Air Flow Rate (H/M/L): 13.7/12.4/11.1 m³/min (Cooling for LEA03/HEA03), 13.7/12.4/11.1 m³/min (Heating for LEA03), 13.7/12.0/10.2 m³/min (Heating for HEA03).
- Fan Motor Output: 40 W.
- Dimensions (WxHxD): 938x182x265 mm.
- Weight: 10.5 kg.
- Operation Sound (H/M/L): 50/46/40 dBA (Cooling/Heating for LEA03), 50/46/42 dBA (Heating for HEA03).
Outdoor Unit (HSU-22LEA03 / HSU-22HEA03):
- Compressor Type: Rotary compressor.
- Refrigerant: R22.
- Refrigerant Charge: 1.48 kg (LEA03), 2.02 kg (HEA03).
- Fan Type: Axial fan.
- Fan Motor Output: 37 W.
- Running Current (Rated): 10.35 A (Cooling), 10.35 A (Heating for LEA03), 11.15 A (Heating for HEA03).
- Power Consumption (Rated): 2210 W (Cooling), 1900 W (Heating for LEA03), 2410 W (Heating for HEA03).
- Dimensions (H×W×D): 810x288x680 mm.
- Weight: 52 kg (LEA03), 57 kg (HEA03).
- Operation Sound (H): 56 dBA.
Usage Features
The manual emphasizes safe and correct usage:
- Remote Controller: Operates the unit within 7m without obstacles. Users are advised not to throw the controller and to replace batteries when needed.
- Power Failure Resume: The unit automatically resumes operation with previous settings after a power outage.
- Air Flow Direction Adjustment: Horizontal flap and vertical blades can be adjusted for optimal airflow. Users are cautioned not to adjust the flap manually.
- Comfortable SLEEP Operation: Automatically adjusts temperature and fan speed during sleep mode.
- Timer On/Off Operation: Allows scheduling of unit operation.
- Emergency Operation: A manual switch for basic operation in case of remote controller failure.
Maintenance Features
Regular maintenance is crucial for the longevity and efficiency of the air conditioner:
- Air Filter Cleaning: The air filter should be cleaned every two weeks. This involves opening the inlet grille, removing the filter, cleaning it with a vacuum cleaner or water, drying it, and reattaching it.
- Air Purifying Filter Replacement: The photocatalyst air purifying filter and bacteria-killing medium air purifying filter should be solarized every 6 months in normal family use. The white side of the photocatalyst filter and the green side of the bacteria-killing filter should face outside.
- General Cleaning: The indoor unit should be wiped with a soft, dry cloth. For serious stains, a neutral detergent diluted with water can be used.
- Safety Precautions: Always turn off the power system and circuit breaker before any maintenance work. Do not use gasoline, benzine, thinner, or cleanser for cleaning as they may damage the unit.
The manual also includes troubleshooting guides for common issues like the system not restarting immediately, noise, smells, mist/steam, and poor cooling, along with error codes (E1, E2, E4, E14) for indoor unit malfunctions. It stresses the importance of professional installation and proper grounding to prevent electrical shocks, fire, or water leakage.
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