Manual for PURY-HP72

Manual for PURY-HP72

Brand: Mitsubishi

Category: Air Conditioner

Document Type: Manual

Language: EN

Uploaded: Nov. 21, 2025, 9:01 p.m.

Manual Publish Date: 2019-05-01

Warranty Information

Refer to the warranty information provided with the product for specific details.

Chapter 1: Check Before Servicing

This chapter outlines essential pre-servicing checks, including preparation for piping work, handling of materials, and safety precautions.

  • 1-1 Preparation for Piping Work: Covers checking refrigerant type, symptoms, safety precautions, necessary tools, and verifying connecting pipes.
  • 1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil: Details copper pipe materials, types, processing, storage, and the characteristics of new and conventional refrigerants, including their chemical properties and pressure characteristics.
  • 1-3 Working with Refrigerant Piping: Provides instructions on pipe brazing, air tightness testing, and vacuum drying procedures.
  • 1-4 Precautions for Wiring: Outlines safety measures for electrical wiring.
  • 1-5 Cautionary notes on installation environment and maintenance: Covers important considerations for the installation environment and ongoing maintenance.

Chapter 10: LED Status Indicators on the Outdoor Unit Circuit Board

This chapter details the meaning of LED status indicators on the outdoor unit circuit board, providing tables that correlate specific LED patterns and switch settings with operational statuses and potential issues.

Troubleshooting and error codes

7-2 Error Code Definitions and Solutions: Codes [0 - 999]
1 000

Error Definition:Communication error between outdoor and indoor units.

Solution:

  • Check the connection of the interconnecting wire between the indoor and outdoor units.
  • Check the interconnecting wire for continuity.
  • Check the circuit board for damage.
2 002

Error Definition:Outdoor unit fan motor abnormality.

Solution:

  • Check the fan motor for obstacles.
  • Check the fan motor for damage.
  • Check the fan motor circuit.
3 003

Error Definition:Compressor overheat.

Solution:

  • Check the refrigerant charge.
  • Check the fan motor for rotation.
  • Check the compressor for overload.
4 004

Error Definition:Outdoor unit temperature sensor abnormality.

Solution:

  • Check the outdoor unit temperature sensor for damage.
  • Check the wiring of the outdoor unit temperature sensor.
5 005

Error Definition:Discharge pipe temperature sensor abnormality.

Solution:

  • Check the discharge pipe temperature sensor for damage.
  • Check the wiring of the discharge pipe temperature sensor.
6 006

Error Definition:Suction pipe temperature sensor abnormality.

Solution:

  • Check the suction pipe temperature sensor for damage.
  • Check the wiring of the suction pipe temperature sensor.
7 007

Error Definition:Suction pipe pressure sensor abnormality.

Solution:

  • Check the suction pipe pressure sensor for damage.
  • Check the wiring of the suction pipe pressure sensor.
8 008

Error Definition:Discharge pipe pressure sensor abnormality.

Solution:

  • Check the discharge pipe pressure sensor for damage.
  • Check the wiring of the discharge pipe pressure sensor.
9 009

Error Definition:Low pressure abnormality.

Solution:

  • Check the refrigerant charge.
  • Check for refrigerant leaks.
10 010

Error Definition:High pressure abnormality.

Solution:

  • Check the refrigerant charge.
  • Check for refrigerant leaks.
  • Check the fan motor for rotation.
11 011

Error Definition:Refrigerant level abnormality.

Solution:

  • Check the refrigerant charge.
  • Check for refrigerant leaks.
12 012

Error Definition:Compressor lock.

Solution:

  • Check the compressor for damage.
  • Check the compressor wiring.
13 013

Error Definition:Refrigerant leak detected.

Solution:

  • Check for refrigerant leaks.
  • Repair the leak and recharge the system.
14 014

Error Definition:Abnormal operation of the YB14 compressor.

Solution:

  • Check the compressor for damage.
  • Check the compressor wiring.
15 015

Error Definition:Abnormal operation of the YB15 compressor.

Solution:

  • Check the compressor for damage.
  • Check the compressor wiring.
16 016

Error Definition:Abnormal operation of the YB16 compressor.

Solution:

  • Check the compressor for damage.
  • Check the compressor wiring.
17 017

Error Definition:Abnormal operation of the YB17 compressor.

Solution:

  • Check the compressor for damage.
  • Check the compressor wiring.
18 018

Error Definition:Abnormal operation of the YB18 compressor.

Solution:

  • Check the compressor for damage.
  • Check the compressor wiring.
19 019

Error Definition:Abnormal operation of the YB19 compressor.

Solution:

  • Check the compressor for damage.
  • Check the compressor wiring.
20 020

Error Definition:Abnormal operation of the YB20 compressor.

Solution:

  • Check the compressor for damage.
  • Check the compressor wiring.
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