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Mitsubishi Heavy Industries SRK71CF-BP User Manual

Mitsubishi Heavy Industries SRK71CF-BP
55 pages
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3
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WALL MOUNTED TYPE
ROOM AIR-CONDITIONER
TECHNICAL MANUAL
Collection data
Manual No. ’06
.
SRK-T
.
062
(Split system, air cooled cooling only type)
SRK52CF-BN, 71CF-BN
SRK52CF-BP, 71CF-BP
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Mitsubishi Heavy Industries SRK71CF-BP Specifications

General IconGeneral
BrandMitsubishi Heavy Industries
ModelSRK71CF-BP
CategoryAir Conditioner
LanguageEnglish

Summary

1 General Information

Specific Features

Details unit functionalities like flap/louver control and self-diagnosis.

Model Name Interpretation

Explanation of how to interpret model designations for series and specifications.

2 Selection Data

Specifications

Detailed technical specifications for various SRK/SRC models.

Range of Usage and Limitations

Defines operational limits for indoor/outdoor temperatures and piping.

Exterior Dimensions

Details dimensions of indoor and outdoor units, including mounting space.

Piping System

Illustrates refrigerant piping for different model series.

Selection Chart

Graphs and tables for adjusting cooling capacity based on temperature and piping length.

3 Electrical Data

Electrical Wiring Diagrams

Wiring diagrams for indoor and outdoor units, showing component connections.

4 Outline of Operation Control by Microcomputer

Remote Control Operation

Explains wireless and wired remote control functions for operation and indications.

Unit ON/OFF Button

Instructions for operating the unit using the indoor unit's ON/OFF button.

Power Blackout Auto Restart Function

Explains the function that resumes operation after a power outage.

Custom Cord Switching Procedure

Steps to modify indoor unit PCB and remote control for custom cord switching.

Flap and Louver Control

Covers swing flap, swing louver, multi-directional airflow, and memory flap functions.

Comfortable Timer Setting

Details on how the comfortable timer adjusts start time based on room temperature.

Sleep Timer Operation

Describes temperature control patterns during sleep timer operation.

Cooling Operation Details

Covers component operation, fan speeds, thermostat, HIGH POWER, and ECONOMY modes.

Dehumidifying Operation Modes

Defines operation blocks, startup, DRY cycles, and ECONOMY mode in dehumidifying.

Automatic Operation Logic

Unit determines mode and correction values based on temperatures; handles restarts and mode changes.

Set Temperature Selection

Modifying PCB to lower range and adjusting settings via remote signals.

Fan Operation Details

Fan speed settings for components and HIGH POWER mode operation.

Regulation of Outdoor Air Flow

How outdoor fan speed changes based on outdoor air temperature.

Stop Mode

Component behavior during complete and thermostat-based stops.

External Control and Input Signal

External control outputs and input signal control via wired remote.

Operation Permission/Prohibition Control

Controls mode switching using jumper wire J3 and CnT input.

Protective Control Functions Overview

Covers frost prevention, dew condensation, fan motor, compressor, and unit abnormality protections.

High-Pressure Control

Compressor control based on outdoor heat exchanger temperature.

Serial Signal Transmission Error Protection

Protection against errors in signals between indoor and outdoor units.

Sensor Disconnection Errors

Error indications for various sensor disconnections.

Indoor Unit Jumper Selections

Table listing jumper settings, functions, and reference pages.

5 Application Data

Safety Precautions

Essential safety warnings and precautions for installation and operation.

Location Selection for Installation

Guidelines for selecting appropriate indoor and outdoor unit locations.

Piping Length and Height Limitations

Specifies maximum piping length and vertical height difference.

Indoor Unit Installation Steps

Covers board fixing, hole drilling, sleeve installation, wiring, and piping preparation.

Outdoor Unit Installation

Guidelines for stable installation of the outdoor unit.

Refrigerant Piping Procedures

Covers preparation, connection, air purge, and insulation of refrigerant piping.

Test Run and Operation Data

Covers trial run steps, customer explanation, drain check, and standard operation data.

Wireless Remote Control Installation and Operation

Covers valid distances, angles, and wall-mounting procedures for wireless remote.

Wired Remote Control and Super Link Adapter Installation

Details PCB modification, location selection, and installation procedures for wired remote.

Wired Remote Control Installation Procedures

Covers exposed and recessed fitting methods for installation.

Wired Remote Control Function Settings

Covers default settings and the method to change functions via wired remote.

Temperature Setting Range Adjustment

How to adjust the upper and lower temperature limits via the remote control.

Super Link Adapter (SC-AD-ER)

Explains functions and shows wiring diagram for the SC-AD-ER.

6 Maintenance Data

Troubleshooting Electrical Equipment

Step-by-step troubleshooting for electrical issues.

Electrical Troubleshooting Precautions

Safety precautions before working on electrical equipment.

Initial Troubleshooting Checks

Initial checks to perform before starting troubleshooting.

Troubleshooting: Unit Malfunctions

Flowcharts for diagnosing and resolving unit not running or running with issues.

Self-Diagnosis and Inspection Procedures

Covers self-diagnosis table, sensor error, and fan motor error inspection procedures.

Indoor Unit Electrical Equipment Checks

Steps to check the indoor unit's circuit board and fan motor.

Servicing Procedures

Procedures for evacuating the system and charging refrigerant.

Remote Control Troubleshooting

Steps to troubleshoot and verify the remote control functionality.

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