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Mitsubishi Electric PURY-P600 User Manual

Mitsubishi Electric PURY-P600
224 pages
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Models PURY-P200, P250, P300, P350, P400YGM-A
PURY-P450, P500, P550, P600, P650YGM-A
Service Handbook
AIR CONDITIONERS CITY MULTI

Table of Contents

Questions and Answers:

Mitsubishi Electric PURY-P600 Specifications

General IconGeneral
BrandMitsubishi Electric
ModelPURY-P600
CategoryAir Conditioner
LanguageEnglish

Summary

Read Before Servicing

Servicing Preparation

Essential items, tools, materials, and piping preparations before servicing.

Refrigerant Handling and Characteristics

Notes on changing refrigerant, leaks, characteristics, and oil.

Restrictions

Electrical Work and Control Wiring

Guidelines for electrical work, M-NET control, cable types, and system connection examples.

Refrigerant Piping Length Restrictions

Specifies limitations on refrigerant piping lengths and configurations.

Components of the Outdoor Unit

Outdoor Unit Appearance and Refrigerant Circuit

Visual identification of outdoor unit components and refrigerant circuit layout.

Control Box Details

Control Box Components Overview

Visual representation of the control box and its internal components.

Under Circuit Board Cover View

View of components located under the circuit board cover.

Circuit Board Identification

Main, INV, and FAN Boards

Detailed views and labeling of the main, inverter, and fan control boards.

Relay, Filter, and G/A Boards

Detailed views and labeling of relay, filter, and gate amplifier boards.

BC Controller Components

BC Controller Front View

Front view of the BC controller, showing key components.

BC Controller Rear View

Rear view of the BC controller, showing key components.

BC Control Box and Board

BC Control Box and Board Overview

Exterior view of the BC control box and detailed view of the BC controller board.

Remote Controller

MA and ME Remote Controller Comparison

Comparison of functions, specifications, and selection criteria for MA and ME remote controllers.

Group Setting and Interlocking (ME Remote)

ME Remote Controller Grouping and Interlocking

Procedures for group settings and interlocking LOSSNAY with indoor units on ME controller.

MA Remote Controller Interlocking

Lossnay Interlocking Setup (MA Remote)

Procedures for interlocking LOSSNAY with indoor units using MA remote controller.

Built-in Thermo Switching

Temperature Detection Source Selection

How to select the temperature detection source for indoor units.

Electrical Wiring Diagrams

PURY-P200 to P400YGM-A Wiring

Electrical wiring diagram for specific outdoor unit models.

PURY-P450 to P650YGM-A Wiring

Electrical wiring diagram for specific outdoor unit models.

BC Controller Wiring Diagrams

Electrical wiring diagrams for various BC controller models.

Refrigerant Circuit

Refrigerant Circuit Diagrams

Diagrams illustrating the refrigerant flow for different models and BC controllers.

Functions of Principal Parts

Outdoor, Indoor, and BC Controller Parts Functions

Explains the functions of key components in the outdoor, indoor, and BC controller units.

Control Settings

Dip Switch Configurations

Configuration of dip switches on outdoor, indoor, and BC controller boards.

Remote Controller Switch Settings

Configuration of switches on the MA remote controller.

Controlling the Outdoor Unit

Initial Control and Start-up Procedures

Steps for initial control, start-up, and compressor frequency settings.

Bypass Valve Control

Operation of bypass solenoid valves (SV1, SV2, SV3) for pressure control.

Frequency Control

Compressor Frequency Management

How compressor frequency is controlled based on capacity and conditions.

Compressor Operation Modes and Limits

Compressor operation modes, pressure, and temperature limits.

Defrost Operation Control

Defrost Operation Procedures and Troubleshooting

Initiation, completion, and problem handling for defrost operation.

Refrigerant Recovery Control

Refrigerant Recovery Process

Conditions and steps for initiating and performing refrigerant recovery.

Outdoor Unit Fan

Outdoor Unit Fan Operation Control

Control methods for the outdoor unit fan's speed and operation.

Cooling/Heating Circuit Control

Unit Operation Modes Overview

Overview of operation modes for indoor/outdoor units and auto changeover.

BC Controller Control

BC Controller Solenoid and LEV Control

Control logic for solenoid valves (SVA, SVB, SVC, SVM) and LEV based on operation mode.

Demand Control

Demand Control Setup and Operation

How to set up and operate demand control using DIP switches and external inputs.

Operation Flow Charts

Indoor Unit Mode Determination Flowchart

Flowchart for determining the operation mode of indoor units.

Outdoor Unit Operation Determination Flowchart

Flowchart for determining outdoor unit operation modes.

BC Controller Operation Flowchart

Flowchart for BC controller operation modes.

Test Run Procedures

Pre-Test Run Checks

Essential checks to perform before starting the test run.

Test Run Method

Step-by-step instructions for conducting the test run using the remote controller.

Refrigerant Amount and Operation

Refrigerant Amount & Operation Characteristics

Relationship between operating characteristics and refrigerant amount.

Refrigerant Amount Judgment and Adjustment

Symptoms, volume judgment, and adjustment procedures for refrigerant.

Additional Refrigerant Calculation

Calculating Refrigerant Charge for Extension Pipes

Method for calculating the amount of refrigerant to add for extension pipes.

Refrigerant Volume Adjustment Mode

Refrigerant Volume Adjustment Procedure

Steps for entering and performing refrigerant volume adjustment mode.

Non-Problematic Symptoms

Normal Operation Symptom Identification

Identifies symptoms that do not indicate a problem during normal operation.

Standard Operation Data

Cooling Operation Data Reference

Reference data for standard cooling operation conditions by model.

Heating Operation Data

Heating Operation Data Reference

Reference data for standard heating operation conditions by model.

Troubleshooting

Check Code List

List of error codes and their corresponding check contents.

Error Display Response

Guidance on how to respond to error messages displayed on the remote controller.

Mechanical Problems Troubleshooting

Troubleshooting steps for mechanical issues identified by error codes.

High Pressure and Overload Troubleshooting

Troubleshooting steps for high pressure abnormalities and overload protection errors.

Power Supply, Fan Speed, and Heat Sink Issues

Troubleshooting for power supply, fan speed, bus voltage, and heat sink errors.

IPM, Compressor, and Communication Errors

Troubleshooting steps for IPM, compressor, ACCT, DCCT, and communication errors.

Sensor and Wiring Abnormalities

Troubleshooting for thermal sensor, pressure sensor, and wiring issues.

Pressure Sensor Troubleshooting

Troubleshooting for high and low-pressure sensor abnormalities.

Communication and System Errors

Troubleshooting for communication errors (MA, M-NET) and system errors.

Transmission Line Troubleshooting

Troubleshooting for transmission circuit bus-busy and hardware abnormalities.

No ACK Abnormality Troubleshooting

Troubleshooting steps when no acknowledgment signal is received.

Remote Controller & External Input Troubleshooting

MA Remote Controller Malfunctions

Troubleshooting steps for MA remote controller issues.

M-NET Remote Controller Malfunctions

Troubleshooting steps for M-NET remote controller issues.

"HO" Display and Switch Issues

Troubleshooting for "HO" display on the remote controller and ineffective switches.

Transmission Wave Shape/Noise Investigation

M-NET Transmission Analysis and Noise Issues

Method for confirming M-NET transmission wave shape and noise, and countermeasures.

Noise Countermeasures

Measures to take to address noise issues in transmission lines.

Principal Parts Troubleshooting

Pressure Sensor Troubleshooting

Detailed steps for diagnosing pressure sensor failures.

Low-Pressure Sensor Troubleshooting

Specific troubleshooting for the low-pressure pressure sensor.

Solenoid Valve Troubleshooting

Solenoid Valve Operation and Coil Checks

Procedures for checking solenoid valve operation and coils.

4-Way Valve and Check Valve Block

Information and checks for the 4-way switching valve and check valve block.

Outdoor Unit Fan Troubleshooting

Outdoor Fan Operation Checks

Procedures for checking fan revolution, speed, and abnormal operation.

BC Controller Parts Troubleshooting

BC Controller Sensor Troubleshooting

Troubleshooting flow charts for pressure and temperature sensors.

Troubleshooting Flow Charts (LEV/Solenoid Valve)

LEV and Solenoid Valve Troubleshooting

Flow charts for diagnosing LEV and solenoid valve issues.

Inverter Parts Troubleshooting

IPM and Diode Stack Checks

Procedures for measuring IPM and diode stack resistances for troubleshooting.

Inverter Parts Replacement Cautions

Cautions regarding wiring and grease application during inverter part replacement.

Main Inverter Circuit Component Checks

Main Power Breaker and Component Checks

Steps for checking main power breaker and individual inverter circuit components.

Control Circuit Overview

Control Power Source Function Blocks

Block diagrams of control power source functions for different model series.

Outdoor Unit Power Source Failure Judgment

Outdoor Unit Transmission Power Troubleshooting

Flowchart for diagnosing failures in the outdoor unit transmission power source circuit.

Refrigerant Leak Detection

Leak Spot Detection Procedures

Procedures for finding refrigerant leaks in indoor and outdoor units during cooling and heating.

Compressor Replacement Instructions

Compressor Replacement Procedure (P450-P650)

Detailed steps for replacing the compressor on P450-P650 models.

Cooling Liquid Collection

Accumulator Cooling Liquid Collection

Procedure for collecting cooling liquid from the accumulator.

BC Controller Service Instructions

BC Controller Service Access and Component Replacement

Procedures for accessing and replacing BC controller parts like panels, sensors, LEV, and valves.

LED Display Information

LED Monitor Display and Initial Setting

How to read the LED monitor for service information and initial settings.

Time Data Storage Function

Time Data Display and Management

How the unit stores and displays time data, including error history and settings.

LED Monitor Code Reference

SW1 LED Code Mapping

Table mapping SW1 settings to LED indicators for various functions and errors.

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