Haier HPR10XC6 Air Conditioner Service Manual

Important Points on Service Operating Safety

Please follow these instructions carefully:

• Unplug the unit to avoid any danger from electric shock before disassembling the unit for repair.
• If there is any sound of the refrigerant circulating when in operation, avoid touching the cooling coils.
• If you need to perform any welding or soldering, be sure you are in a well ventilated area.
• Only a qualified professional should perform any welding on the unit.
• When repairing the unit, the specifications listed in this manual must be strictly adhered to when replacing any components.
• When replacing any electrical components, they should be factory approved units.
• Be sure that any electrical components are properly wired and in place.

Flow Chart for Inspecting and Repairing the Unit

This section outlines a troubleshooting process for common issues:

Air Conditioner Won't Start

• No Power: Check the power switch.
• Power Tripped: If the plug and socket are loose, re-plug the power supply cord. If the timer fails, test by electroscope and change the switch.

Air Conditioner Won't Cool Properly

• Compressor Won't Start: Check for protector failure (change protector) or capacitor failure (change capacitor).
• Refrigerant Leakage: If wiring is loose, re-connect it. For refrigerant leaks, change the air conditioner with 15KG/CM² nitrogen gas from the low-pressure side and detect the leaking point by soap. Use oxyacetylene and 5% silver solder to weld the cracked points.
• Running Test: After addressing issues, run the vacuum evacuation for more than 15 minutes, then change coolant and proceed with the running test.

Appearance (Outward)

Front Side

The front of the unit features:

• Air outlet: Located at the top for air circulation.
• Front panel: The main housing.
• Control panel: Contains buttons and display for operation.
• Handle hole: For carrying the unit.

Back Side

The back of the unit features:

• Air filter: Located behind a panel to clean incoming air.
• Rear panel: Housing for components.
• Air outlet (Heat exchange): Where processed air is expelled.
• Power supply cord: For connecting to electricity.
• Water outlet drain: For draining collected condensation.

Troubleshooting

Operation

Control Panel

The control panel includes:

• Warning Light: Illuminates when condensed water accumulates and the internal tank is full, preventing operation until drained.
• Power Control: Turns the unit on and off.
• Mode Control: Selects operating modes: Cool, Dehumidify, or Fan. A light indicates the current setting.
  • Cooling Mode: Cools the air and exhausts hot air outside via an exhaust tube. Adjust fan speed and air temperature for comfort. Air exchange hoses must vent outside.
  • Dehumidify Mode: Dehumidifies air without full cooling. Fan speed is adjustable if room temperature is above 25°C; otherwise, it's fixed to "Low". Warm air exchange hoses should vent inside the room.
• Fan Mode: Circulates air without cooling. Venting is not required.
• Fan Speed Control: Offers three settings: High, Medium, and Low.
• Timer: Allows setting an auto-off timer for the running unit or an auto-on timer for standby mode, adjustable in hourly increments.
• Timer / Temp Set Controls: Used to adjust the timer and thermostat. In cooling mode, pressing the temperature adjustment buttons displays and allows setting the temperature. The display reverts to room temperature after 15 seconds. Temperature adjustment is only available in cool mode. Timer settings are adjustable from 1-12 hours. Pressing both set buttons simultaneously toggles between Celsius and Fahrenheit.

Note: After switching the air conditioner off, wait 3 minutes before switching it back on.

Air Conditioner Remote Control

The remote control offers the same functions as the unit's touch controls.

Control Panel Functions (Remote)

• Power Control: On/Off.
• Fan Speed Control: Selects High, Medium, or Low fan speed.
• On/Off Timer Control: For auto switch off (running mode) or auto switch on (stand-by mode). Adjust time setting in 1-hour intervals.
• Fahrenheit/Celsius Button: Toggles temperature display units.
• Time / Temperature Set Control: Adjusts timer and temperature. In cool mode, temperature can be adjusted. Timer setting is available from 1-12 hours.
• Mode Control: Cycles through Cool, Dehumidify, and Fan modes.

Notes:

• Do not drop the remote control.
• Do not place the remote control in direct sunlight.
• Keep the remote control at least 1 meter away from TVs or other electrical appliances.

Battery Replacement

Remove the back cover and insert AAA or IEC R03 1.5V batteries, observing correct polarity (+/-). Use only new batteries of the same type. Do not attempt to recharge, mix old and new batteries, or dispose of batteries in fire.

Diagrams

Refrigerator System Diagram

This diagram illustrates the components of the refrigeration system:

• Indoor Components: Indoor Radiator Drum, Indoor Motor, Indoor Radiator Fan.
• Evaporator: The component where refrigerant absorbs heat.
• Outdoor Components: Outdoor Radiator Drum, Outdoor Radiator Fan, Outdoor Motor.
• Condenser: The component where refrigerant releases heat.
• Capillary: A narrow tube controlling refrigerant flow.
• Air Filter: Cleans air before it enters the system.
• Liquid Accumulator: Stores liquid refrigerant.
• Water Blade / Water Motor: Likely related to condensation management or fan operation.
• Compressor: The heart of the refrigeration cycle, pumping refrigerant.

Schematic Wiring Diagram

This diagram shows the electrical connections:

• Main Components: Remote Connector, Sensor, Compressor, Indoor Motor, Outdoor Motor, Water Motor.
• Associated Components: Capacitors.
• Terminals: J01, J001, J002, J003.
• Wiring Colors: Red, Blue, White, Yellow, Green.
• Power Input: The unit operates on 115V-60Hz, with connections for L (Line), N (Neutral), and E (Ground).