Midea MPK-09ERN2 - User Manual

Questions and Answers

D
Dr. Amy ArroyoAug 18, 2025
Why is my Midea Air Conditioner not cooling or heating?
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  Rachael RasmussenAug 18, 2025
  If your Midea Air Conditioner isn't cooling or heating, begin by checking the voltage. Verify the wiring terminals are secure, repairing them if loose. Ensure the temperature and mode settings are correctly adjusted. Inspect the compressor, overload protector, and wiring for any damage, replacing if necessary. If the unit uses an electric heater, check for damage and replace if needed. Also, examine the overheat fuse and replace if it's damaged. Finally, check the voltage of the main PCB; if the unit fails in heating mode, replace the main PCB.
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michael62Aug 21, 2025
How to fix no power display on panel of Midea Air Conditioner?
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  martinchristinaAug 21, 2025
  If there is no power display on the panel or button failure on your Midea Air Conditioner, check the power supply to ensure it's providing power to the unit. Inspect the power cord for damage and correct if necessary. Check the resistance between the input/output lines on the transformer (discharge transformer before testing), and replace the transformer if either input/output is open or the transformer is damaged. Check the voltage on the display board, replace the display board if it is +5V else replace the main PCB.
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Amy MendozaAug 25, 2025
What to do if Midea MPK-09ERN2 Air Conditioner shows water full alarm?
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  Michael WelchAug 25, 2025
  If you're getting a water full alarm on your Midea Air Conditioner, start by checking if the water tank is full and empty it if necessary. Inspect the water depth sensor and replace it if it has failed. Check the water pump and replace it if it's not working. If the water depth is overloaded in the chassis, drain the water by opening the drainage hose. Finally, inspect the water depth sensing structure and replace or realign it if it's faulty.
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nicole54Aug 28, 2025
How to fix Midea MPK-09ERN2 fan motor noise?
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  Matthew WiseAug 28, 2025
  If your Midea Air Conditioner's fan motor is making noise, the fan blower might be cracked, out of balance, or partially missing; replace it if any of these issues are present. Check for any loose screws and tighten them. If knocking sounds continue when the motor is running, or if the motor hums or the noise appears internal, the bearings may be worn; replace the motor in this case.
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Jeffrey RossAug 30, 2025
What to do if compressor will not run while fan motor runs in Midea Air Conditioner?
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  Carolyn WarnerAug 30, 2025
  If the fan motor runs but the compressor won't start on your Midea Air Conditioner, start by checking the voltage. Inspect the wire connections and repair or replace any loose terminals. If wires are off, refer to the wiring diagram for proper placement. Check the voltage of the main PCB and replace it if open. Examine the capacitor and replace it if it's not within +/-10% of the manufacturer's rating or if it's shorted, open, or damaged. Ensure the room temperature setting is at the coolest setting in cooling mode or the warmest in heating mode. Finally, check the compressor for open circuits or grounding, and replace the compressor if necessary.
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stevencastroSep 5, 2025
Why does my Midea MPK-09ERN2 Air Conditioner unit start and stop frequently?
- K
  Kelly RossSep 5, 2025
  If your Midea Air Conditioner starts and stops frequently, the input power supply voltage may be too low. Check the voltage and call an electrician if it's not within limits. Inspect the main PCB and replace it if the compressor relay on the PCB is shorted or damaged. Also, when the room temperature is too high, the compressor will protect itself.
J
joshuawadeSep 8, 2025
Why does Midea Air Conditioner compressor stop instantly after startup?
- J
  Jose HopkinsSep 8, 2025
  If the compressor on your Midea Air Conditioner stops instantly after startup, it could be due to too much refrigerant, causing the compressor load to be too high. Recycle and recharge the refrigerant after checking for the reason. Alternatively, the compressor might be blocked internally; replace it after investigating the cause.
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Meredith ToddSep 12, 2025
Why does Midea MPK-09ERN2 fan motor run intermittently?
- G
  Gregory GarrisonSep 12, 2025
  If the fan motor on your Midea Air Conditioner runs intermittently, it may be cycling on overload. Check the voltage, and if it's not within limits, call an electrician. Test the capacitor and replace it if it's not within +/-10% of the manufacturer's rating. Check the bearings; if the blower wheel cannot rotate freely, replace the motor. If the speed does not change from high speed to low speed, replace the motor.
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Mr. George SalazarNov 15, 2025
Why is my Midea Air Conditioner cooling or heating not good?
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  melanie42Nov 15, 2025
  If your Midea Air Conditioner isn't cooling or heating well, several factors could be the reason. Start by checking the air filter and cleaning or replacing it if it's restricted. Ensure the air discharge pipe is properly aligned and not damaged. Make sure the unit is appropriately sized for the room. Clean the condenser and evaporator coils if they are restricted. Inspect the water showering system for blockages and clean if necessary. Check the fan capacitor and replace if it's outside +/-10% of the manufacturer's rating. Clear any obstructions blocking airflow to the unit. If there is less refrigerant, check the tubes for leaks, repair them, and recharge the refrigerant. Regulate the flow of the capillary tube if the evaporator is frosted, replace if blocked, and repair any leaks. If th...
G
Gregory GrahamDec 3, 2025
Why Midea MPK-09ERN2 Air Conditioner fan motor will not run?

Summary

Preface

1.1 Safety Precautions

General safety guidelines for servicing the unit, including unplugging power and insulation testing.

1.2 Insulation Resistance Test

Procedure for measuring insulation resistance to prevent electric shock hazards.

1.3 Features

Key features of the air conditioner unit.

1.4 Control Locations

Identification and description of control panel elements.

Troubleshooting Guide

2.1 Refrigeration Cycle Diagram

Diagram illustrating the refrigeration cycle of the unit.

2.2 Electric Function

Details on electrical functions and operating parameters.

2.3 Trouble Shooting Guide

Guide to identify and resolve common problems.

Wiring Diagram

3.1 For Cooling Only Models

Wiring diagrams specific to cooling-only models.

3.2 For Cooling and Heating Models

Wiring diagrams specific to cooling and heating models.

3.3 Electrical Control Scheme

Electrical control schematic diagram for the unit's components.

How to Disassemble the Unit

4.1 Prepare the Unit

Initial steps for disassembling the unit, including power and hose disconnection.

4.2 Remove Rear Panel Screws

Instructions for removing the rear panel screws.

4.3 Disassemble Display Board Assembly

Steps to disassemble the display board assembly.

4.4 Disassemble Front Panel

Instructions for removing the front panel screws.

4.5 Replace Main Control Board

Procedure for replacing the main control board.

4.7 Replace Evaporator Fan Motor or Electric Heater

Steps to replace the evaporator fan motor or electric heater.

4.8 Replace Condenser Fan Motor

Instructions for replacing the condenser fan motor.

4.9 Repair Refrigerant System or Replace Compressor

Procedure for repairing the refrigerant system or replacing the compressor.

4.10 Repair Water Disposal System or Replace Pump

Steps to repair water disposal system or replace switches/pump.

Exploded View

Spare Parts List

Specification

Midea MPK-09ERN2 Specifications

General

Cooling Capacity	9000 BTU/h
Energy Efficiency Ratio (EER)	2.6
Refrigerant	R410A
Noise Level (Indoor)	52 dB(A)
Power Supply	220-240V, 50Hz
Operating Temperature (Cooling)	17-35°C
Air Flow (High)	360 m³/h