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Troubleshooting Midea Aircon Problems

Midea Troubleshooting

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Experiencing problems with your Midea Aircon unit? In this troubleshooting guide, we discuss the different malfunction signs and issues for Midea Aircons — what they usually tell you about your unit and what is possibly causing them.

Common Midea Aircon Malfunction Signs

To better understand the problem you’re dealing with, you need to pay attention to the usual signs that indicate there’s something wrong with the unit:

  • Once the Operation, Run Indicator or other indicators begin flashing rapidly (around 5 times every second) and the flash can't be fixed by disconnecting the power, and then connecting it in again.
  • The aircon’s fuse blows and the circuit breaker trips frequently.
  • Other objects and water penetrate into the air conditioner.
  • The remote control is not working properly.
  • The power cord is damaged or abnormally warm.
  • You start smelling a burning odor.
  • The unit is emitting loud and abnormal sounds.
  • Other unusual situations that are completely out of your normal aircon experience.

Common Midea Aircon Issues and Causes

Issue Possible Causes
Unit does not turn on when pressing ON/OFF button The Unit has a 3-minute protection feature that prevents the unit from overloading. The unit cannot be restarted within three minutes of being turned off.
The unit changes from COOL/HEAT mode to FAN mode The unit may change its setting to prevent frost from forming on the unit. Once the temperature increases, the unit will start operating in the previously selected mode again
The set temperature has been reached, at which point the unit turns off the compressor. The unit will continue operating when the temperature fluctuates again.
The indoor unit emits white mist In humid regions, a large temperature difference between the room’s air and the conditioned air can cause white mist.
Both the indoor and outdoor units emit white mist When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture generated from the defrosting process.
The indoor unit makes noises A rushing air sound may occur when the louver resets its position.
A squeaking sound may occur after running the unit in HEAT mode due to expansion and contraction of the unit’s plastic parts.
Both the indoor unit and outdoor unit make noises Low hissing sound during operation: This is normal and is caused by refrigerant gas flowing through both indoor and outdoor units.
Low hissing sound when the system starts, has just stopped running, or is defrosting: This noise is normal and is caused by the refrigerant gas stopping or changing direction.
Squeaking sound: Normal expansion and contraction of plastic and metal parts caused by temperature changes during operation can cause squeaking noises.
The outdoor unit makes noises The unit will make different sounds based on its current operating mode.
Dust is emitted from either the indoor or outdoor unit The unit may accumulate dust during extended periods of non-use, which will be emitted when the unit is turned on. This can be mitigated by covering the unit during long periods of inactivity.
The unit emits a bad odor The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.) which will be emitted during operations.
The unit’s filters have become moldy and should be cleaned.
The fan of the outdoor unit does not operate During operation, the fan speed is controlled to optimize product operation.
Operation is erratic, unpredictable, or unit is unresponsive

Interference from cell phone towers and remote boosters may cause the unit to malfunction. In this case, try the following:

  • Disconnect the power, then reconnect.
  • Press ON/OFF button on remote control to restart operation.
  • Source: Midea Aircon’s Official Owner’s Manual (Premier Series)

    Troubleshooting Midea Aircon Issues

    Problem Possible Causes Solution
    Poor Cooling Performance Temperature setting may be higher than ambient room temperature Lower the temperature setting
    The heat exchanger on the indoor or outdoor unit is dirty Clean the affected heat exchanger
    The air filter is dirty Remove the filter and clean it according to instructions
    The air inlet or outlet of either unit is blocked Turn the unit off, remove the obstruction and turn it back on
    Doors and windows are open Make sure that all doors and windows are closed while operating the unit
    Excessive heat is generated by sunlight Close windows and curtains during periods of high heat or bright sunshine
    Too many sources of heat in the room (people, computers, electronics, etc.) Reduce amount of heat sources
    Low refrigerant due to leak or long-term use Check for leaks, re-seal if necessary and top off refrigerant
    SILENCE function is activated SILENCE function can lower product performance by reducing operating frequency. Turn off SILENCE function.
    The unit is not working Power failure Wait for the power to be restored
    The power is turned off Turn on the power
    The fuse is burned out Replace the fuse
    Remote control batteries are dead Replace batteries
    The Unit’s 3-minute protection has been activated Wait three minutes after restarting the unit
    Timer is activated Turn timer off
    The unit starts and stops frequently There’s too much or too little refrigerant in the system Check for leaks and recharge the system with refrigerant.
    Incompressible gas or moisture has entered the system. Evacuate and recharge the system with refrigerant
    The compressor is broken Replace the compressor
    The voltage is too high or too low Install a manostat to regulate the voltage
    Poor heating performance The outdoor temperature is lower than 7°C (44.5°F) Use auxiliary heating device
    Cold air is entering through doors and windows Make sure that all doors and windows are closed during use
    Low refrigerant due to leak or long-term use Check for leaks, re-seal if necessary and top off refrigerant
    Indicator lamps continue flashing

    The unit may stop operation or continue to run safely. If the indicator lamps continue to flash or error codes appear, wait for about 10 minutes. The problem may resolve itself.

    If not, disconnect the power, then connect it again. Turn the unit on.

    If the problem persists, disconnect the power and contact your nearest customer service center.

    Error code appears in the window display of indoor unit:

  • E0, E1, E2…
  • P1, P2, P3…
  • F1, F2, F3…
  • Source: Midea Aircon’s Official Owner’s Manual (Premier Series)

    Quality Repair and Maintenance Service for Your Midea Aircon

    If the problems and issues still persist with your Midea Aircon after doing some troubleshooting, it’s best to turn off your unit immediately and contact an AC expert right away.

    Whether it’s a Midea aircon not cold, a water leak or an electrical issue, give us a call here at Luce Aircon! We offer the full range of AC repair and maintenance services for any aircon brand and type.

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    Staff Writer

    Staff Writer

    This article is written by our passionate staff writers who seek to share our knowledge from our business

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