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How can I understand the model name for the HAIER AS25XCAHRA air conditioner?
The model name AS25XCAHRA for the HAIER air conditioner can be broken down as follows:
A: Indoor unit
S: Type of indoor unit (wall-mounted)
25: Nominal cooling capacity (9000 TU/h)
X: Platform of indoor units (X platform)
C: 40X Platform
A: Version number
H: Indoor units
R: DC inverter
A: Apply to T1; 220~240V 50HZ/1ph
What are the general safety warnings for repairing the HAIER AS25XCAHRA?
When repairing your HAIER AS25XCAHRA, observe the following safety warnings:
Disconnect Power: Be sure to disconnect the power cable plug from the socket before disassembling the equipment. Working on equipment connected to a power supply can cause an electrical shock.
Refrigerant Gas: If refrigerant gas discharges during repair work, do not touch it as it can cause frostbite. If gas leaks, ventilate the area as it can generate toxic gases when it contacts flames.
Capacitor Discharge: The step-up capacitor supplies high-voltage electricity. Be sure to discharge the capacitor completely before conducting repair work to avoid electrical shock.
Power On/Off: Do not start or stop the air conditioner by plugging or unplugging the power cable plug, as this can cause an electrical shock or fire.
Wet Hands: Do not repair electrical components with wet hands.
Water: Do not clean the air conditioner by splashing water on it.
Grounding: Ensure proper grounding when repairing in a humid or wet place.
Cleaning: Turn off the power switch and unplug the power cable when cleaning the equipment. The internal fan rotates at high speed and can cause injury.
Handling: Do not tilt the unit when removing it to prevent water spillage.
Hot Components: Check that the refrigerating cycle section has cooled down sufficiently before conducting repair work to avoid burns.
Welding: Use a welder in a well-ventilated place to prevent oxygen deficiency.
What precautions should be taken after completing repairs on my HAIER AS25XCAHRA?
After repairing your HAIER AS25XCAHRA, please follow these precautions:
Use Approved Parts: Be sure to use parts listed in the service parts list of the applicable model and appropriate tools. Never attempt to modify the equipment.
Check Connections: Check to see if parts and wires are mounted and connected properly, and if connections at soldered or crimped terminals are secure. Improper installation can cause excessive heat generation, fire, or electrical shock.
Check Grounding: Check the grounding and repair it if the equipment is not properly grounded.
Insulation Resistance: Measure the insulation resistance after the repair and make sure the resistance is 1 M ohm or higher. Faulty insulation can cause an electrical shock.
Drainage Check: Be sure to check the drainage of the indoor unit after the repair to prevent water from entering the room.
Power Plug: Check to make sure the power cable plug is not dirty or loose, then insert the plug into a power outlet all the way. A dusty or loose plug can cause an electrical shock or fire.
Damaged Cables: If the power cable and lead wires have scratches or have deteriorated, be sure to replace them.
Power Source: Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances.
What are the key features of the HAIER AS25XCAHRA air conditioner?
The HAIER AS25XCAHRA air conditioner includes the following features:
I FEEL: Controls temperature through the remote controller to accurately perceive the room temperature.
Eco Sensor: Detects room conditions and human activities to switch working modes for higher energy efficiency.
Self-Clean: Freezes the evaporator with moisture and then removes dirt during melting to ensure clean air.
56°C Steri-Clean: Kills bacteria and viruses by heating the evaporator to 56°C for 30 minutes.
UVC PRO: Inhibits bacteria reproduction and sterilizes viruses.
Wi-Fi Control: Use the Haier hOn App for system control from a smart device.
2-way piping design: The pipe can exit from either the left or right side.
Super match: One outdoor unit can be matched with two or more indoor units.
DIY auto mode: Adjusts to the last fixed operation mode automatically.
Turbo mode: Provides quick cooling or heating.
Auto restart: Automatically returns to previous operation conditions after a power blackout.
24 hours timer: Allows you to set the unit to turn on, off, or sequence between on and off.
Intergrative valve cover: The valve cover is integrated.
Double 8 display: The display is in a Double 8 mode.
Coanda Plus Airflow: Delivers cool air further, faster, and stronger for even room distribution.
Easy to Clean: Allows for easy removal of the fan and filter for deep cleaning.
Easy to disassemble: Simplified disassembly of core components like the PCB, motor, and fan for easier maintenance and cleaning.
What are the technical specifications for the HAIER AS25XCAHRA air conditioner?
NOMINAL DISTRIBUTION SYSTEM VOLTAGE
| Phase | / | 1 |
| Frequency | Hz | 50 |
| Voltage | V | 220-240 |
NOMINAL CAPACITY and NOMINAL INPUT
| 20/25 | 35 | ||||
|---|---|---|---|---|---|
| cooling | heating | cooling | heating | ||
| Capacity rated | KW | 2.8(0.8-3.2) | 3.2(0.8-4.2) | 3.5(1.0-4.0) | 4.2(1.0-5.2) |
| Btu/h | 9550 (2730-10920) | 10920 (2730-14330) | 11940 (3410-13650) | 14330 (3410-17740) | |
| Power Consumption(Rated) | KW | 0.65 | 0.76 | 0.87 | 1.037 |
| SEER/SCOP | W/W | 8.8 | 4.75 | 8.5 | 4.75 |
| Annual energy consumption | KWh | 111 | 737 | 144 | 825 |
| Moisture Removal | m³/h | 1.2*10⁻³ | 1.6*10⁻³ | ||
TECHNICAL SPECIFICATIONS
| Dimensions | H*W*D | mm | 895*236*313 | |
| Packaged Dimensions | H*W*D | mm | 964*386*316 | |
| Weight | / | KG | 11.3 | |
| Gross weight | / | KG | 14 | |
| Color | / | / | White | |
| Sound level | Sound pressure(Hi/Mid/Lo) | dB(A) | 39/32/25 | 40/33/26 |
| Sound power(high) | dB(A) | 56 | 57 | |
TECHNICAL SPECIFICATIONS-PARTS
| 20/25 | 35 | ||||
|---|---|---|---|---|---|
| cooling | heating | cooling | heating | ||
| Fan | Type | Cross flow fan | |||
| Motor output | W | 30 | 30 | ||
| Air flow rate(high) | m³/h | 600 | 680 | ||
| Speed(Hi/Mid/Lo) | rpm | 950/800/650 | 1050/925/800 | ||
| Heat exchanger | Type | ML fin- Φ 5HI-HX tube | |||
| Segment *stage*fitch | 3*20*1.4 | ||||
| Air direction control | Right, Left, Horizontal, Downward | ||||
| Air filter | Removable/Washable/Mildew Proof | ||||
| Temperature control | Microcomputer Control | ||||
What sensors are in the HAIER AS25XCAHRA and what do they do?
| Type | Description | Qty |
|---|---|---|
| Room sensor | It is used for detecting room temperature | 1 |
| Pipe sensor | It is used for detecting temperature of the evaporator |
What are the functions of the connectors on the Printed Circuit Board (PCB) of my HAIER AS25XCAHRA?
The connectors on the control PCB (Printed Circuit Board) of the HAIER AS25XCAHRA have the following functions:
Connectors:
CN9: Connector for fan motor
CN6: Connector for heat exchanger thermistor and Room temperature thermistor
CN5, CN5′: Connector for UP&DOWN STEP motor
CN11, CN11′: Connector for RIGHT&LEFT STEP motor
CN21 (white line), CN52 (black line): Connector for indoor terminal N and L
CN8: Connector for display board
CN23 (red line): Connector for communication between the indoor and outdoor board
CN36: Connector for long-range control
CN34: Connector for wifi Module
CN2: Connector for wired controller
CN51: Connector for room card
Other Designations:
CN14: Connector for Forced operation ON / OFF switch
FUSE1: Fuse 3.15A/250VAC
SW1: Connector for Forced operation ON / OFF switch
SW2: Selects remote code, room card enable/disable, and unit model settings.
RV1: Varistor
The SW2 settings determine the PCB and Display models for your unit:
| UNIT MODEL | PCB MODEL |
|---|---|
| AS25XCAHRA | 0011801123D (23) |
| AS35XCAHRA | 0011801123D (26) |
| UNIT MODEL | DISPLAY MODEL |
|---|---|
| AS25XCAHRA | 0011801045 |
| AS35XCAHRA | 0011801045 |
How does the Automatic Operation mode work on the HAIER AS25XCAHRA?
When the Automatic Operation mode is selected on your HAIER AS25XCAHRA, the system first determines the running mode based on the current room temperature (Tr) and the set temperature (Ts).
If Tr is greater than or equal to Ts – 3°C, it will choose Cooling Mode.
If Tr is less than Ts – 3°C, it will choose Heating Mode.
The system can then automatically switch between cooling, fan, and heating modes based on changes in the indoor ambient temperature. However, an automatic conversion between cooling and heating modes will only occur after 15 minutes.
What are the control features of the Cooling Operation mode on the HAIER AS25XCAHRA?
In Cooling Operation mode, the HAIER AS25XCAHRA has the following features:
Temperature Control Range: 16°C to 30°C, with a temperature difference of ±1°C.
Compressor Control: When the indoor air temperature is higher than the set temperature, the compressor will turn on. The system maintains its status when the indoor temperature equals the set temperature.
Automatic Airflow Speed Control:
High speed: When room temperature is ≤ Set temperature + 3°C.
Medium speed: When Set temperature + 1°C ≤ Room temperature < Set temperature + 3°C.
Low speed: When Room temperature < Set temperature + 1°C.
Manual Airflow Speed Control: You can manually set the fan speed to high, medium, or low.
Defrosting Function: To prevent frosting on the indoor heat exchanger, if the compressor runs continuously for 6 minutes and the indoor coil temperature is below 1°C for 10 seconds, the compressor will stop. It will restart when the coil temperature rises to 9°C (after a 3-minute delay).
How does the Dehumidifying mode function on the HAIER AS25XCAHRA?
The Dehumidifying mode on the HAIER AS25XCAHRA operates as follows:
Temperature Control Range: 16°C to 30°C, with a temperature difference of ±1°C.
Control Feature:
When the room temperature (Tr) is greater than the set temperature (Ts) + 2°C, the compressor turns on, and the indoor fan operates at the set speed.
When Tr is between Ts and Ts + 2°C, the outdoor system operates at a high dehumidifying frequency for 10 minutes, then a low dehumidifying frequency for six minutes. The indoor fan runs at low speed.
When Tr is less than Ts – 1.5°C, the outdoor system stops, and the indoor fan stops for 3 minutes before switching to low speed.
Automatic Wind Speed Control:
High speed: Tr ≥ Ts + 5°C
Medium speed: Ts + 3°C ≤ Tr < Ts + 5°C
Low speed: Ts + 2°C ≤ Tr < Ts + 3°C
Light speed: Tr < Ts + 2°C
Manual Control: Manual operation is not available if the sensor is off or if Tr < Ts + 3°C.
What are the control features of the Heating Operation mode on the HAIER AS25XCAHRA?
In Heating Operation mode, the HAIER AS25XCAHRA operates with these features:
Temperature Control Range: 16°C to 30°C, with a temperature difference of ±1°C and automatic temperature compensation of 4°C is added.
Compressor Control:
If Room Temperature (Tr) + 0.5°C ≤ Set Temperature (Ts), the outdoor compressor turns on, and the indoor fan enters cold air proof mode.
If Tr > Ts + 1.5°C, the outdoor system turns off, and the indoor fan enters heat residue sending mode.
Indoor Fan Control (Cold Air Proof Operation): The indoor fan speed is controlled by the indoor coil temperature to prevent blowing cold air. The fan will only start or increase speed as the coil heats up to specific thresholds (25°C, 33°C, 38°C) and will stop if the temperature drops below 23°C.
Residue Heat Sending: When the compressor stops, the indoor fan runs at low speed for 20 seconds to send out any remaining heat.
Defrosting: When the system receives a defrosting signal from the outdoor unit, the indoor fan will stop. Normal operation resumes after defrosting is complete.
How do I use the Timing and Dormant operation features on the HAIER AS25XCAHRA?
Timing Operation
You can set a 24-hour on/off timer. After setting, the timing indicator will light up and will turn off when the timing is finished.
1. System ON timing: The indicator will light up, and the unit will be in waiting mode. It will turn on when the set time is reached.
2. System OFF timing: The indicator will light up while the system is running. It will turn off at the set time.
3. System ON and OFF timing: You can set a sequence for the system to turn on and then off, or vice versa.
Dormant (Sleep) Operation
Dormant operation is an 8-hour cycle designed for comfort during sleep.
1. Cooling/Dehumidifying Mode: After setting dormant operation, the set temperature will increase by 1°C after the first hour, and another 1°C after the second hour. The system will maintain this new temperature for 6 hours and then shut down.
2. Heating Mode: The set temperature will decrease by 2°C after the first hour and another 2°C after the second hour. After 3 more hours, the temperature will be raised by 1°C, and the system will maintain this status for the remaining 3 hours before shutting down.
3. Indoor Fan Control: During dormant operation, if the fan speed was high, it will switch to medium. If it was medium, it will switch to low. If it was already low, it will not change.
What is the function of the Urgent on/off input on the HAIER AS25XCAHRA?
The urgent on/off button provides manual control and access to special functions:
Urgency Operation (press for less than 5 seconds): The system will enter the fully automatic operation mode.
Stop Operation: If the system is already running, pressing the urgency key will stop it.
Test Operation (press for 5 to 10 seconds from OFF state): The system will start a test operation. The inlet temperature sensor is disabled, the indoor fan runs at high speed, and it sends a signal for cooling with a set ambient temperature of 30°C and coil temperature of 16°C to the outdoor unit. This mode finishes in 30 minutes or can be stopped by the remote control.
Recall Last Malfunction (press for 10 to 15 seconds from OFF state): The display screen will show the code for the last recorded malfunction.
What should I check if my HAIER AS25XCAHRA is not operating correctly?
| Symptom | Check Item | Details of Measure |
|---|---|---|
| None of the units operates | Check the power supply. | Check to make sure that the rated voltage is supplied. |
| Check the indoor PCB | Check to make sure that the indoor PCB is broken. | |
| Operation sometimes stops. | Check the power supply. | A power failure of 2 to 10 cycles can stop air conditioner operation. |
| Equipment operates but does not cool, or does not heat (only for heat pump) | Check for faulty operation of the electronic expansion valve. | Set the units to cooling operation, and compare the temperatures of the liquid side connection pipes of the connection section among rooms to check the opening and closing operation of the electronic expansion valves of the individual units. |
| Diagnosis by service port pressure and operating current. | Check for insufficient gas. | |
| Large operating noise and vibrations | Check the installation condition. | Check to make sure that the required spaces for installation (specified in the Technical Guide, etc.) are provided. |
What do the error codes on the indoor display of my HAIER AS25XCAHRA mean?
| Error Code | Display Method | Outdoor LED1 flash times | Fault Description | |
|---|---|---|---|---|
| Indoor and Outdoor | E7 | Directly display | 15 | Communication fault between indoor and outdoor units |
| Indoor Malfunction | E1 | Directly display | / | Indoor temperature sensor |
| E2 | Directly display | / | Indoor coil sensor failure | |
| E4 | Directly display | / | Indoor eeprom failure | |
| E14 | Directly display | / | Indoor fan failure | |
| E5 | Trouble record | 22 | Internal unit antifreeze protection | |
| Outdoor Malfunction | E9 | Trouble record | 21 | Internal unit overload |
| F12 | Directly display | 1 | Eeprom failure | |
| F1 | Directly display | 2 | IPM failure | |
| F22 | Directly display | 3 | AC current overcurrent protection | |
| F3 | Directly display | 4 | Communication error between module board and main PCB board. | |
| F20 | Trouble record | 5 | High pressure protection | |
| F19 | Trouble record | 6 | Power over/under voltage protection | |
| F27 | Directly display | 7 | Compressor stall / press instantaneous stop | |
| F4 | Directly display | 8 | Compressor discharging temperature protection | |
| F8 | Trouble record | 9 | Abnormal of DC motor | |
| F21 | Directly display | 10 | Abnormal of piping sensor | |
| F7 | Directly display | 11 | Suction temperature sensor failure | |
| F6 | Directly display | 12 | Abnormal of outdoor ambient sensor | |
| F25 | Directly display | 13 | Abnormal of compressor discharge sensor | |
| F13 | Trouble record | 16 | Lack of refrigerant | |
| F14 | Trouble record | 17 | 4-way valve reverse failure | |
| F11 | Directly display | 18 | Compressor jam (only for spdu) | |
| F28 | Directly display | 19 | Module PWM select circuit error | |
| F15 | Trouble record | 20 | Outdoor terminal block temperature protection | |
| F2 | Trouble record | 24 | Instantaneous over-current protection of the compressor | |
| 25 | Compressor U/V/W-phase overcurrent | |||
| F9 | Trouble record | 26 | Module reset | |
| F24 | Trouble record | 27 | CT disconnection | |
| F34 | Trouble record | 37 | Outdoor coil protection | |
| F35 | Trouble record | 38 | Compressor driver board failure | |
| F43 | 46 | Model matching abnormality |
How do I troubleshoot a thermistor or related abnormality (E1, E2, F21, F7, F6, F25) on my HAIER AS25XCAHRA?
A thermistor error is indicated when the thermistor input voltage is more than 4.92V or less than 0.08V during compressor operation. Follow these steps to troubleshoot:
1. Turn off the power switch before connecting or disconnecting any connectors to prevent damage.
2. Check the connector connection to the PCB. If it is not normal, correct the connection.
3. If the connection is normal, perform a thermistor resistance check. Remove the thermistor connector from the PCB and measure its resistance with a tester. Compare the reading to the normal temperature/resistance values chart provided in the service manual.
4. If the resistance is not normal, replace the thermistor.
5. If the resistance is normal, the issue is likely with the indoor unit PCB. Replace the indoor unit PCB.
How do I troubleshoot an EEPROM abnormal error (E4, F12) on my HAIER AS25XCAHRA?
An EEPROM error occurs when the data of the EEPROM is detected as faulty or the EEPROM is damaged. The supposed causes are faulty EEPROM data, a faulty EEPROM chip, or a faulty PCB.
To resolve this issue, you must replace the indoor or outdoor mainboard where the error is occurring (E4 for indoor, F12 for outdoor). Be sure to turn off the power switch before performing any work to prevent damage to the parts.
How do I troubleshoot an indoor fan motor malfunction (E14) on my HAIER AS25XCAHRA?
An E14 error indicates that the rotation feedback signal from the fan motor was not received for 2 minutes. The likely causes are a broken wire inside the motor, a faulty connection, or a defective indoor unit PCB. To check the DC fan motor:
Important: The A/C is electrifying. Do not pull out or insert the terminals of the motor while it is powered on, as this could damage the motor. Always turn off the power before working on connectors.
1. Check the connector connection at the PCB and the joint box.
2. Check the motor power supply voltage output (pins 1-4).
3. Check the motor control voltage (pins 4-5).
4. Check the rotation command voltage output (pins 4-6).
5. Check the rotation pulse input (pins 4-7).
The expected pin functions are:
Pin 1: Motor power supply voltage
Pin 2: Unused
Pin 3: Unused
Pin 4: P.OV (reference potential)
Pin 5: Motor control voltage (15 VDC)
Pin 6: Rotation command voltage (1 – 6 VDC)
Pin 7: Rotation pulse input
If these checks fail, the motor or PCB may need replacement.
How do I troubleshoot an IPM protection fault (F1) on my HAIER AS25XCAHRA?
An F1 error indicates an IPM (Intelligent Power Module) protection fault. This can be caused by a faulty compressor, faulty PCB of the IPM module, or disconnected compressor wiring. Follow this procedure:
1. Turn on the unit with the remote controller. Observe if the malfunction is reported before or immediately when the compressor starts.
2. If it fails upon startup, test the IPM module resistance. Check the resistance between terminal P and U, V, W, and then between terminal N and U, V, W. The resistances should be similar and range between 1 MΩ and 10 MΩ.
3. If the resistance values are incorrect, the IPM Module is damaged and needs replacing.
4. If the compressor starts normally but the malfunction is reported after it has run for some time, the issue could be an overcharged or undercharged system (e.g., capillary clogging, faulty expansion valve) or a seized compressor shaft. Check system pressures. If the system is over/under charged or the compressor shaft is seized, the compressor needs replacing.
How do I troubleshoot a communication fault between the indoor and outdoor units (E7) on my HAIER AS25XCAHRA?
An E7 error indicates a communication fault between the indoor and outdoor units. It can be caused by disconnected wiring, a broken indoor PCB, a broken outdoor PCB, or a broken Module PCB. Follow these troubleshooting steps:
1. Restart the A/C. If it becomes normal, the outdoor mainboard may need dehumidification.
2. If it starts normally but fails again after a while, the outdoor mainboard may need to be dedusted.
3. Check the linking cable between the indoor and outdoor units. Ensure it’s well-connected, wires are well-insulated, and L/N is not reversed. If faulty, reconnect or replace the cable.
4. Check the indoor mainboard (with only the indoor unit powered). Measure the voltage between pins 3 and 4 of IC6. Also measure the voltage between CN23(C) and CN21(L). If the voltage is not a constant value between 0V DC and 5V DC, or if the voltage between the communication line and N is not close to 18V DC, the indoor mainboard is damaged and should be replaced.
5. Check the outdoor power supply (230VAC) when both units are powered. If there’s no power, check the cable between the units.
6. Check the LED lights on the outdoor board. If LED2 is not lit, the module PCB is likely damaged. If LED1 is not lit, measure the voltage between pins 3 and 4 of IC9 on the outdoor mainboard. If the voltage is not a constant 0V-5V DC, the outdoor PCB is damaged. If the voltage is okay, the issue is likely the cable.
How do I remove the front panel of the HAIER AS25XCAHRA indoor unit?
Follow these steps to remove the front panel:
1. Release any tape holding the panel in place.
2. Hold the front panel by the tabs on both sides and lift it until it stops with a click.
3. Loosen the screw and lift up the control box cover.
4. Pull the wires out of the control box and then release the pivots on both sides of the unit to completely remove the front panel.
How do I remove the air filters and horizontal flap from the HAIER AS25XCAHRA?
To Remove the Air Filters:
1. Lift the right air filter upwards slightly and then pull it out downwards.
2. Lift the left air filter upwards slightly and then pull it out downwards.
To Remove the Horizontal Flap:
1. Release the center of the pivot and then release the side of the pivot.
2. Bend the horizontal blade slightly and remove it.
How do I remove the fan motor and fan from the HAIER AS25XCAHRA indoor unit?
To remove the fan and fan motor, you must first remove several other components. After removing the front panel, filters, lower trim panel, and base frame A, follow these steps:
1. Loosen the two marked screws (2EA) and release the cover of the fan motor.
2. Loosen the single marked screw (1EA) on the fan motor mount, then lift up the fan motor and remove it.
3. You can now lift up the cross-flow fan and remove it from the unit.
How do I remove the casing from the HAIER AS25XCAHRA indoor unit?
1. Loosen the two marked screws (2EA) at the bottom of the casing.
2. Release the four marked hooks (4EA) at the top of the casing.
3. Pull the grille out horizontally to remove it.
Note for reassembly: When assembling, install the front grille horizontally to avoid stuffing the flap inside. Ensure the four hooks are caught properly.
How do I release the stepping motor wires and remove the control box on the HAIER AS25XCAHRA?
1. Remove the stepping motor wires and fan motor wires from the Appliance Control Board.
2. Pull the wires out of the control box.
3. Loosen the single control box screw (1EA) and then pull the control box out from the unit.
How do I remove the heat exchanger from the HAIER AS25XCAHRA indoor unit?
To remove the heat exchanger, you must first disassemble most of the indoor unit. Once other components are removed, follow these steps:
1. Loosen the single marked screw (1EA) on the stepping motor release.
2. Pull the mounting plate and heat exchanger bracket, and then remove them.
3. Release the fixture plate from the base frame hook and remove it.
4. Loosen the four marked screws (4EA), including one screw on the right side, that secure the heat exchanger assembly.
5. The heat exchanger can now be carefully lifted out of the unit chassis.