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Midea MPN-08CRN1-BH9 User Manual

Midea MPN-08CRN1-BH9
28 pages
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Website: www.mideaaircon.com
Service Manual
AIR CONDITIONER
Portable Type
N portable (AHAM
standard)
MPN-05CRN1-BH2(H)
US-KC15Y1/N1-N(H2H)
MPN-08CRN1-BH2(H)
US-KC23Y1/N1-N(H2H)
MPN-12CRN1-BH9(H)
US-KC35Y1/N1-N(H9H)
N portable (ASHRAE
standard)
MPN-05CRN1-BH9
US-KC15Y1/N1-N(H9)
MPN-08CRN1-BH9
US-KC23Y1/N1-N(H9)
MPN-085CRN1-BH9
US-KC25Y1/N1-N(H9)
MPN-10CRN1-BH9
US-KC30Y1/N1-N(H9)
MPN-12CRN1-BH9
US-KC35Y1/N1-N(H9)
MPN-14CRN1-BI6
US-KC41Y1/N1-N(I6)
N1 portable (AHAM
standard)
MPN1-08CRN1-BH2(H)
US-KC23Y1/N1-N1(H2H)
MPN1-09CRN1-BH2(H)
US-KC26Y1/N1-N1(H2H)
MPN1-10CRN1-BH2(H)
US-KC30Y1/N1-N1(H2H)
MPN1-12CRN1-BH9(H)
US-KC35Y1/N1-N1(H9H)
N1 portable (ARI
standard)
MPN1-08CRN1-BH9
US-KC23Y1/N1-N1(H9)
MPN1-10CRN1-BH9
US-KC30Y1/N1-N1(H9)
MPN1-12CRN1-BH9
US-KC35Y1/N1-N1(H9)
MPN1-14CRN1-BI6
US-KC41Y1/N1-N1(I6)
N series
N1 series
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Midea MPN-08CRN1-BH9 Specifications

General IconGeneral
BrandMidea
ModelMPN-08CRN1-BH9
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Precautions

Installation Safety

Guidelines for electrical work, self-repair, sharp edges, installation area, power cable, flammable gas, strange sounds, water damage, cleaning, and long-term storage.

Operational Cautions

Checks for refrigerant leakage, drain hose, product level, noise, lifting, and sea wind exposure.

Operational Guidelines

Precautions for skin exposure, special uses, airflow, cleaning, sharp parts, stepping, filter, battery handling, and draining water.

Out dimension

Control Panel Display

Mode Selection

Selects operating modes (AUTO, COOL, DRY, FAN, HEAT) and indicates the selected mode.

Timer Function

Initiates AUTO ON/OFF timer programs in conjunction with UP/DOWN buttons.

Power Control

Controls the power switch of the unit.

Sleep Mode

Initiates the SLEEP operation mode.

Fan Speed Control

Controls fan speed (LOW, MED, HI) and indicates the selected speed.

Ion Generator (Optional)

Activates the ion generator to remove airborne particles.

Temperature & Timer Adjustment

Adjusts temperature and timer settings, with Celsius/Fahrenheit conversion.

LED Display Indicators

Shows temperature, auto-timer, and room temp. Includes error codes (E1, E2, P1).

Swing Function Control

Controls louver angle, allowing stopping or auto swing.

Refrigerant Cycle Diagram

PCB Drawing & Wiring Diagram

Specifications

Installation Procedures

Installation Location Requirements

Specifies placement for optimal air outlet flow, minimum clearance from obstacles, and prohibition of use in washrooms.

Exhaust Hose Preparation

Details how to prepare and connect the exhaust hose to the unit.

Window Installation - Double-Hung Sash

Stool Foam Seal Application

Attaching foam seal to the window stool for sealing purposes.

Window Panel to Stool Mounting

Adjusting and securing the window panel to the window stool with screws.

Top Window Foam Seal Application

Applying foam seal to the top of the window for proper sealing.

Window Installation - Double-Hung Sash (continued)

Secure Window Sash Closure

Ensuring the window sash is closed firmly against the installed window panel.

Window Sash Gap Sealing

Sealing the gap between the window sashes with foam seal.

Window Installation - Sliding Sash

Frame Foam Seal Application

Applying foam seal to the window frame for sealing.

Sliding Panel to Stool Mounting

Adjusting and securing the sliding window panel to the window stool with screws.

Window Installation - Sliding Sash (continued)

Top Window Foam Seal Application

Applying foam seal to the top of the window for sealing.

Secure Sliding Sash Closure

Ensuring the sliding sash is closed firmly against the installed window panel.

Sliding Sash Gap Sealing

Sealing the gap between the sliding window sashes with foam seal.

Product Features

Basic Test Procedures

Compressor Wiring Test

Procedure to test compressor continuity using an ohmmeter for open windings.

Compressor Ground Test

Testing for grounding of the compressor by checking resistance between terminals and the compressor body.

Basic Test Procedures (continued)

Compressor Efficiency Check

Diagnosing compressor inefficiency due to faulty valves by checking system pressures and temperature differences.

External Terminal Overload

Explanation of external overload protection and its function based on amperage and temperature.

External Overload Test

Testing the continuity of an external overload protector.

Internal Terminal Overload

Description of internal overload protection embedded in motor windings.

Internal Overload Check

Testing continuity of internal overload protectors.

Basic Test Procedures (continued)

Refrigeration System Repairs

Details on performing repairs in the sealed refrigeration circuit.

Required Repair Equipment

Lists necessary equipment for refrigerant system repairs, including meters, recovery systems, pumps, and gauges.

Equipment Capability Requirements

Specifies capabilities required for repair equipment, such as CFC recovery, evacuation, and charging.

Hermetic Compressor Replacement

Detailed steps for replacing a hermetic compressor, including refrigerant recovery, flushing, and leak testing.

Basic Test Procedures (continued)

Compressor Motor Burnout Procedure

Steps for handling compressor motor burnout, including refrigerant recovery, flushing, and reassembly.

Rotary Compressor Service

Troubleshooting and service for rotary compressors, focusing on mounts and terminal identification.

Refrigerant Charging Process

Procedures for accurately charging refrigerant, including methods for high and low side introduction.

Fan Motor Testing

Steps to test the fan motor's functionality and speed settings using a test cord.

Capacitor Testing

Procedures for testing the capacitor's functionality.

Basic Test Procedures (continued)

Capacitor Function and Testing

Explains the role of the capacitor and provides a test procedure using an ohmmeter for compressor and fan motors.

Comprehensive Troubleshooting Guide

Power and Panel Issues

Troubleshoots issues related to the unit's display and buttons, covering power failure and transformer issues.

Remote Control Malfunctions

Addresses remote control malfunctions, including battery checks and display board/main PCB issues.

Intermittent Fan Motor Operation

Diagnoses intermittent fan motor operation, involving capacitor checks and bearing issues.

Comprehensive Troubleshooting Guide (continued)

Compressor Startup Failure

Identifies causes for compressor stopping immediately after startup, such as refrigerant issues or internal blockage.

Fan Motor Failure to Run

Troubleshoots scenarios where the fan motor fails to operate, checking power, wiring, and PCB.

Fan Motor Noise Issues

Addresses fan motor noise issues, including scroll rubbing, loose screws, worn bearings, and internal motor noise.

Compressor Not Running with Fan

Diagnoses why the compressor doesn't run when the fan motor is operational, checking voltage, wiring, and PCB.

Unit Excessive Noise

Troubleshoots excessive noise from the unit, including copper tubing, water level alarms, and motor issues.

Water Full Alarm Resolution

Explains the water full alarm condition and its resolution, involving water depth sensors.

Poor Cooling/Heating Performance

Identifies reasons for poor cooling/heating performance, such as air filters, discharge pipes, or unit sizing.

Comprehensive Troubleshooting Guide (continued)

Unit Sizing Assessment

Assesses if the unit is properly sized for the intended area for effective cooling or heating.

Condenser/Evaporator Motor Failure

Diagnoses failure of shaded pole motors in the condenser and evaporator.

Fan Motor Performance Issues

Checks fan motor capacitor and removes airflow obstructions.

Airflow Obstructions

Addresses airflow issues by cleaning or removing obstructions from inlets/outlets.

Low Refrigerant Diagnosis

Explains how to check for refrigerant leaks, recycle refrigerant, and recharge the system.

Capillary Tube Issues

Discusses capillary tube issues like blockage or leaks affecting refrigerant flow.

Compressor Pressure Regulation

Diagnoses compressor problems like damaged valves or issues affecting pressure regulation.

Heat Source Management

Suggests reducing excessive heat sources to improve unit performance.

Power Supply Verification

Checks voltage and terminals for power supply issues.

Wiring Connection Correction

Inspects and corrects loose or incorrect wiring connections.

Temperature Setting Adjustment

Advises checking and adjusting temperature settings for optimal performance.

Mode Setting Verification

Recommends checking and adjusting the operating mode for desired function.

Compressor Fault Diagnosis

Checks compressor, overload protector, or wiring for faults.

Electric Heater Fault Check

Checks and replaces a damaged electric heater.

Overheat Fuse Replacement

Checks and replaces an overheating fuse.

Main PCB Performance Check

Checks PCB voltage and replaces if unit fails in heating mode.

Low Power Supply Voltage

Checks power supply voltage and calls an electrician if it's too low.

Main PCB Relay Check

Checks the main PCB for a shorted or damaged compressor relay.

Room Temperature Impact on Compressor

Addresses compressor protection due to excessively high room temperature.

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