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Mitsubishi Electric PUHY-(E)P300 User Manual

Mitsubishi Electric PUHY-(E)P300
302 pages
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Service Handbook
AIR CONDITIONERS
Models
PUHY-(E)P200, P250, (E)P300, P350, (E)P400, (E)P450YHM-A
PUHY-(E)P500, (E)P550, (E)P600, (E)P650YSHM-A
PUHY-(E)P700, (E)P750, (E)P800, (E)P850, (E)P900YSHM-A
PUHY-P950, P1000, P1050, P1100, P1150, P1200, P1250YSHM-A

Table of Contents

Questions and Answers:

Mitsubishi Electric PUHY-(E)P300 Specifications

General IconGeneral
ModelPUHY-(E)P300
SeriesCity Multi
TypeVRF Outdoor Unit
Cooling Capacity (kW)30.0
Heating Capacity (kW)33.5
RefrigerantR410A
Energy Efficiency ClassA
Power Supply380-415V, 50Hz
Operating Temperature (Cooling)-5°C to 46°C

Summary

Safety Precautions

Installation and Electrical Safety

Emphasizes professional installation, proper grounding, and electrical safety measures to prevent hazards.

I Read Before Servicing

Read Before Servicing Procedures

General instructions and checks before servicing, including refrigerant type and safety.

Necessary Tools and Materials

Lists required tools and materials for R410A systems, categorizing their use.

Piping Materials Specifications

Details copper pipe types, thickness, and flare dimensions for R410A systems.

Vacuum Drying and Refrigerant Charging

Steps for vacuum drying and charging R410A refrigerant, emphasizing liquid state.

Refrigerant Leak Remedies

Procedures for replenishing refrigerant after a leak, referring to troubleshooting section.

II Restrictions

System Configuration Guidelines

Summarizes compatible indoor/outdoor unit combinations, capacities, and counts.

Pipe Length Restrictions

Specifies allowable lengths for refrigerant piping sections and height differences.

III Outdoor Unit Components

IV Remote Controller

V Electrical Wiring Diagram

Outdoor Unit Electrical Wiring Diagram

Detailed wiring diagrams for various outdoor unit models.

VI Refrigerant Circuit

VII Control

Dipswitch Functions and Factory Settings

Details DIP switch functions on control and INV boards for various settings.

VIII Test Run Mode

Pre-Test Run Checks

Essential checks before test runs: safety, connections, power, and insulation.

Refrigerant Adjustment and Characteristics

Explains refrigerant effects on system operation and adjustment principles.

Refrigerant Amount Adjust Mode

Detailed procedure for adjusting refrigerant levels using sensor readings and modes.

IX Troubleshooting

Error Code Lists

Comprehensive list of error codes, definitions, and affected units.

Refrigerant Leak Detection and Repair

Procedures for finding and fixing refrigerant leaks in indoor/outdoor units.

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