Haier Air conditioner troubleshooting

Haier air conditioners are new technologies of comfort. The troubleshooting system presented below in form of a table is a part of these advanced technologies. It helps to reveal malfunctions of air conditioners and remove them on time.

Haier basic Air conditioner troubleshooting

ProblemCause/Solutions
Air Conditioner Will Not Operate■ The power supply cord is unplugged. Plug into a grounded 3 prong outlet. See “Electrical Requirements.”
■ The power supply cord has tripped (Reset button has popped out). Press and release RESET (listen for click; Reset button will latch and on some devices, a green light will turn on) to resume operation.
■ A household fuse has blown, or circuit breaker has tripped. Replace the fuse or reset the circuit breaker. If the problem continues, call an electrician. See 'Electrical Requirements."
■ The Power button has not been pressed or the Mode control knob is turned to Off. Press POWER or turn the Mode control knob to an active setting.
■ The local power has failed. Wait for power to be restored.
Air conditioner blows fuses or trips circuit breakers■ Too many appliances are being used on the same circuit. Unplug or relocate appliances that share the same circuit.
■ Timc-delay fuse or circuit breaker of the wrong capacity is being used. Replace with a time-delay fuse or circuit breaker of the correct capacity. See "Electrical Requirements."
■ An extension cord is being used. Do not use an extension cord with this or any other appliance.
■ You are trying to restart the air conditioner too soon after turning off the air conditioner. Wait at least 3 minutes after turning off the air conditioner before trying to restart the air conditioner.
Air conditioner power supply cord trips (Reset button pops out)■ Disturbances in your electrical current can trip (Reset button will pop out) the power supply cord. Press and release RESET (listen for dick; Reset button will latch and on some devices, a green light will turn on) to resume operation.
■ Electrical overloading, overheating, cord pinching or aging can trip (Reset button will pop out) the power supply cord. After correcting the problem, press and release RESET (listen for click; Reset button will latch and on some devices, a green light will turn on) to resume operation. NOTE: A damaged power supply cord must be replaced with a new power supply cord obtained from the product manufacturer and must not be repaired.
Air conditioner seems to run too much■ The current air conditioner replaced an older model. The use of more efficient components may cause the air conditioner to run longer than an older model, but the total energy consumption will be less. Newer air conditioners do not emit the ‘blast" of cold air you may be accustomed to from older air conditioners, but this is not an indication of lesser cooling capacity or efficiency. Refer to the efficiency rating (EER) and capacity rating (in Btu/h) marked on the air conditioner.
■ The air conditioner is in a heavily occupied room, or heatproducing appliances are in use in the room. Use exhaust vent fans while cooking or bathing and try not to use heatproducing appliances during the hottest part of the day. A higher capacity air conditioner may be required, depending on the size of the room being cooled.
Air conditioner cycles on and off too much or does not cool room in cooling mode■ The air conditioner is not properly sized for your room. Check the cooling capabilities of your room air conditioner. Room air conditioners are not designed to cool multiple rooms.
■ The filter is dirty or obstructed by debris. Clean the filter.
■ There is excessive heat or moisture (open container cooking, showers, etc.) in the room. Use a fan to exhaust heat or moisture from the room. Try not to use heatproducing appliances during the hottest part of the day.
■ The louvers are blocked. Install the air conditioner in a location where the louvers are free from curtains, blinds, furniture, etc.
■ The outside temperature is below 61 °F (16°C). Do not try to operate your air conditioner in the cooling mode when the out- side temperature is below 61°F (16°C).
■ The temperature of the room you are trying to cool is extremely hot. Allow extra time for the air conditioner to cool off a very hot room.
■ Windows or doors to the outside are open. Close all windows and doors.
■ The Temperature control is not at a cool enough setting. Adjust the TEMP/TIME control to a cooler setting by pressing the minus button to reduce the temperature. Set the Fan Speed control to the highest setting.
Water drips from cabinet into your house■ The air conditioner is not properly leveled. The air conditioner should slope slightly downward toward the outside. Level the air conditioner to provide a downward slope toward the outside to ensure proper drainage. See the Installation Instructions.

Haier V1124C2H Air Conditioner troubleshooting

SymptomPossible CauseRemedy
No coolingPower off or loose electrical connectionMake sure main sw itch is ON. Check and tighten all connections.
Incorrect thermostat settingSet thermostat correctly
Defective contactorCheck for 24V at contactor coil.
Open circuit breaker of blown fusesReset or replace
Defective transformerCheck wiring - Replace it.
Interconnecting low voltage wiring damageReplace thermostat w iring
Insufficient CoolingDirtv filtersClean & replace
Indoor air blockageCheck supply registers and return grills for blockage.
Blocked outdoor coilClear away leaves and other debris
Improperly sized unitRecalculate load
Improper airflowCheck - should be 400CFM/Ton
Incorrect refrigerant chargeCharge correctly per instruction.
Air, non-condensibles or moisture in systemRecover refrigerant, evacuate & recharge, add filter drier
Incorrect voltageAt compressor terminals, voltage must be within 10% of rating plate volts w hen unit is running.
Water on floor or in furnaceBlocked condensate drain and "P" trapRemove blockage
Condenser fan runs, compressor doesn’tRun or start capacitor defectiveReplace
Loose connectionCheck and tighten all connections.
Compressor stuck, grounded or openWait for 2 hours for overload to reset.
motor winding, open internal overloadReplace compressor if still open.
Low voltage conditionAt compressor terminals, voltage must be within 10% of rating plate volts when unit is running.
Low voltage conditionAdd start kit components
Compressor short-cyclingIncorrect voltageAt compressor terminals, voltage must be within 10% of rating plate volts when unit is running.
Defective overload protectorReplace - check for correct voltage
Refrigerant underchargeAdd refrigerant
Register sweatLow evaporator airflowIncrease blower speed or reduce restriction - replace air filter
High head - Low vapor pressuresRestriction in liquid line, metering device or filter drierReplace defective components
Flowrator piston size too smallChange to correct size piston
Incorrect capillary tubesChange coil assembly
Blocked outdoor coilClear away leaves and other debris
High head - High or normal vapor pressuresRefrigerant overchargeCorrect system charge
Condenser fan not runningRepair or replace
Air, non-condensibles or moisture in systemRecover refrigerant, evacuate & recharee. add filter drier
Low head - High vapor pressuresFlowrator piston size too largeChange to correct size piston
Defective compressor valvesReplace compressor
Low vapor - cool compressor - iced evaporator coilIncorrect capillary tubesReplace coil assembly
Low evaporator airflowIncrease blower speed or reduce restriction - replace air filter
Operating below 65 F outdoorsAdd low ambient kit
Moisture in the systemRecover refrigerant, evacuate & recharge, add filter drier
High vapor pressureExcessive loadRecheck load calculation
Defective compressorReplace
Fluctuating head and vapor pressuresAir or non-condensibles in systemRecover refrigerant, evacuate & recharge.
Pulsing noise at metering device or liquid lineAir or non-condensibles in systemRecover refrigerant, evacuate & recharge

HAIER HWS10XC1 Air conditioner troubleshooting

ProblemsCause/Solutions
If air conditioner does not operate:• Check if unit is plugged in. The plug may have come loose.
• Check if the electrical wall receptacle is of proper voltage.
• Check if the circuit breaker needs to be reset or if the fuse needs to be replaced.
• Check if the unit is in "Off" mode.
• The fan control may be in "Off" position.
Air from air conditioner is warm:• The A/C setting may need to be raised.
• The temperature outside the room is below 65” F. The compressor will not cycle on if the temperature outside is below 65°F.
Ice formation on cooling coils:• Outside temperature too cold. Set the unit on fan only setting to defrost ice.
• Lower temperature setting. Temperature setting may be too cold.
• Unit BTU may be too high for the room.
Air conditioner working but room not cooling:• Room may have appliances that produce heat. Use an exhaust fan to remove excess heat.
• Vent may be in the open position. Vent has to be closed for optimum cooling.
• Redirect the airflow. Remove any obstacles.
• All doors and windows need to be closed so cool air does not escape the room.
• Air filter may need cleaning.
• Unit BTU may be too low for the required cooling area.
• On extreme hot & humid days air conditioners may take a little longer to cool.
Air conditioner is making noise when cooling:You may hear sounds of air movement, water, compressor clicking on and off or window vibrations. Please read Operating Guide - Normal Operating Sounds.
Water in the air conditioner cabinet:This is normal as your air conditioner not only cools but also dehumidifies the air. If there is water dripping inside the room, check the installation of the unit. The unit may need to be reinstalled. Tilt the unit 1/4" outside to drain the excess water produced.

Haier HWR05XCM Air conditioner troubleshooting

POSSIBLE PROBLEMPOSSIBLE CAUSEREMEDY
Air Conditioner does not start or operatePower supply cord is not plugged into an outlet.Plug unit into a mating grounded outlet.
Power supply cord has tripped.Press and release RESET button on the power supply cord.
Unit is turned off.Turn on unit using remote control or on control panel.
A household fuse or circuit breaker has blown.Replace the fuse or reset the circuit breaker.
Remote control is not workingBatteries are dead.Replace the batteries.
Batteries inserted wrong.Make sure batteries are inserted in the correct position.
Room does not feel cold enoughThe room is too hot.Allow time for the room to cool down when you turn on the unit.
The temperature control may not be set correctly.Adjust the temperature control on the control panel or remote control.
Air flow is restricted.Make sure the air discharge area is not blocked.
Room feels too coldTemperature set too low.Raise the set temperature.
Air conditioner cycles on and off too oftenAir filter is dirty or restricted.Clean the air filter.
Air flow is restricted.Make sure the air discharge area is not blocked.
Outside air temperature is below 61°F.Do not operate the unit when the outside temperature is below 61°F.
Outside temperature is very hot.Raise the FAN speed to the highest setting.
Water drips into your houseAir conditioner is not properly leveled.Tilt unit slightly from the front to the back. Refer to Installation section. DO NOT drill a hole in the cabinet base.
Water drips outside your houseHot, humid weather.This is normal during days with high humidity.
Water collects in cabinet baseHumidity drains into cabinet base.This is normal during days with high humidity. DO NOT drill a hole in the cabinet base.
Air conditioner is freezing up; ice forming on coilTemperature outside is too low, below 61°F.To defrost coil, set to FAN ONLY mode and set temperature higher.

Haier HW-18CH2N Air conditioner troubleshooting

ConditionCheck ItemCorrective Action
Doesn't operateIs plug firmly inserted? Is fuse burned out? Is there power failure?Restore power or replace fuse.
Is thermostat switch incorrectly adjusted?Adjust the themostate.
Is there direct sunlight into the room?Use curtain or blinds.
No cool air of poor coolingIs mode selection switch set to fan mode?Select cool mode.
Are doors or windows left open?Shut doors and windows.
Is there any obstacle blocking air inlet or outlet?Remove the obstacle.
Is the fresh air window shifted to the open?Close the fresh air window.
Is there a strong heat source in the room?Remove or turn off the heat source.
Is air filter clogged?Remove and clean.

Haier AC142ACNAC Air conditioner troubleshooting

TroubleCheckup resultPossible reasonsCorresponding solution
No response after power being connectedUnavailable voltage at input part of circuit boardThe power supply coil isn’t plugged wellPlug the supply coil properly
Unavailable voltage at one end of the fuseDamaged wave filtering componentReturn to the controller manufacturer for repair
Damaged fuseReplace with a good one
Unavailable output from the consequent pole of transformerThe transformer isn’t plugged well or is damagedPlug the transformer well or replace with a good one
Improper output of 7805Damaged component on power supply unit of indoor boardReturn to the controller manufacturer for repair
Normal power supply for major chipDamaged major chipReturn to the controller manufacturer for repair
Display board does not make normal responseIndicator lamps do not lightDamaged connection cable between display board and indoor boardReplace with a good connection cable
Connection cable between display board and indoor board isn’t connected wellConnect the cable well
Remote control cannot be receivedDamaged reception adaptorReplace with a good one
Damaged remote circuit or major chipReturn to the controller manufacturer for repair
The buzzer does not beep while making remote controlUnavailable square wave signal at two ends of the buzzerDamaged dynatron Q1Replace with a good one
Damaged major chipReturn to the controller manufacturer for repair
Available square signal at two ends of the buzzerDamaged buzzerReplace with a good one
Indoor blowing fan does not runNo output from 2803 on indoor boardDamaged 2803Replace with a good 2803
Normal output of relays K1, JK2, JK3CN8 on indoor board is not plugged well with connection cableConnect connection parts well
Indoor blowing fan cannot not generate low windNo output at 16 pin of 2803 on indoor boardDamaged 2803Replace with a good 2803
Unavailable voltage on COM port of relay JK2 on indoor boardDamaged relay JK2Replace with a good one
No output at relay JK1 on indoor boardDamaged relay JK1Replace with a good one
Indoor blowing fan cannot generate medium windNo output at 15 pin of 2803Damaged 2803Replace with a good 2803
No voltage at COM of relay JK3 on indoor boardDamaged relay JK3Replace with a good JK3e
No output at relay JK2 on indoor hoardDamaged relay JK2Replace with a good JK2
Indoor blowing fan cannot generate high windNo output at 14 pin of 2803Damaged 2803Replace with a good 2803
No output at relay JK3 on indoor boardDamaged relay JK3Replace with a good JK3
No output of swingNo output at 11 pin of 2803Damaged 2803Replace with a good 2803
No output at relay JK6 of indoor boardDamaged relay JK6Replace with a good JK6
Unavailable power breakdown memoryNo setting has been madePress sleep button 10 times within 5 seconds (and the buzzer will beep 4 times), the system is then set to power breakdown memory mode.
Unavailable power breakdown memoryDamaged chip IC6 of indoor boardReturn to the controller manufacturer for repair
No output of four-way valve during heating programNo output at 18 pin of 2803Damaged 2803Replace with a good 2803
No output of relay JK7 on indoor boardDamaged relay JK7Replace with a good JK7
Available output of relay JK7 on indoor boardSocket CN6 is not plugged well with connection cablePlug CN6 and the connection cable well
No swing wind under swing modeNo output at 12 pin of 2803Damaged 2803Replace with a good 2803
No output of relay JK5 on indoor boardDamaged relay JK5 on indoor boardReplace with a good JK5
Available output of relay JK5 on indoor boardSocket CN4 is not plugged well with connection cablePlug CN4 well with the connection cable
During cooling program, the compressor does not start when the temperature meets proper conditionsThree minutes’ protection for compressorThe compressor will work normal after three minutes
Too low temperature of indoor coil pipe causes overcooling protectionIt will restore automatically when the temperature of indoor coil pipe rises to 7°C
No output at 11 pin of 2803 on indoor boardDamaged 2803Replace with a good 2803
No output of relay JK6 on indoor boardDamaged relay JK6 on indoor boardReplace with a good JK6
No output of relay JK6 on indoor boardConnection cable between the compressor and JK6 isn’t plugged wellPlug the connection cable well
During heating program, the compressor does not start when the temperature meet proper conditions3 minutes’ delay protection for compressorIt will restore normally after 3
Too high temperature of indoor coil pipe causes overheat protectionIt1 will automatically restore when the temperature of indoor coil pipe falls to 57°C
No output at 11 pin of 2803 of indoor boardDamaged 2803Replace with a good 2803
During heating program, the compressor does not start when the temperature meet properNo output of relay JK6 on indoor boardDamaged relay JK6 on indoor boardReplace with a good JK6
Available output of relay JK6 on indoor boardConnection cable between compressor and JK6 isn’t plugged wellPlug the connection cable well
During cooling program, the compressor works while outdoor blowing fan does notNo output at collector of Q2 on indoor boardDamaged Q2Replace with a good Q2
No output of relay JK8 on indoor boardDamaged relay JK8 on indoor boardReplace with a good JK8
Available output of relays on indoor boardSocket CN6 is not plugged well with connection cablePlug the connection cable well
During heating program, the compressor work while outdoor blowing fan does notToo high temperature of indoor coil pipe causes overheat protectionIt will automatically restore when the temperature of indoor coil pipe falls to 57°C
During heating program, the compressor work while outdoor blowing fan does notNo output at collector of Q2 on indoor boardDamaged Q2Replace with a good Q2
No output of relay JK8 on indoor boardDamaged relay JK8 on indoor boardReplace with a good JK8
Available output of relays on indoor boardSocket CN6 is not plugged well with connection cablePlug the connection cable well
Abnormal overcurrent detectionCurrent transformer outputs normallyDamaged rectification diode D6-D7 etc.Return to the controller manufacturer for repair
T ransformer CT1 outputs abnormallyDamaged transformer CT1Replace with a good one
Inaccurate protection currentAdjust the adjustable potentiometer
Damaged major chipReturn to the controller manufacturer for repair
With timing indicator and compressor indicator extinguishing, the operation indicator flashes every secondDamaged indoor temperature sensorReplace with a good one
With timing indicator and compressor indicator lighting, the operation indicator flashes every secondDamaged temperature sensor for indoor coil pipeReplace with a good one
Water pump indicator flashes every second (trouble for water discharging)No output at 13 pin of 2803 on indoor boardDamaged 2803Replace with a good 2803
No output of relay JK6 on indoor boardDamaged relay JK4 on indoor boardReplace with a good JK4
Available output of relay JK6 on indoor boardSocket CN5 is not plugged well with connection cablePlug the connection cable well
Faulty connection cable to transmit float feedback signalReplace with a good one

Error codes and troubleshooting