EasyManua.ls Logo

Mitsubishi Heavy Industries FDE71VH User Manual

Mitsubishi Heavy Industries FDE71VH
204 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
(Split system, air to air heat pump type)
DUCT CONNECTED-LOW/MIDDLE STATIC PRESSURE TYPE
Single type
FDUM100VNAWVH
100VSAWVH
125VNAWVH
125VSAWVH
140VNAWVH
140VSAWVH
Twin type
FDUM100VNAWPVH
100VSAWPVH
125VNAWPVH
125VSAWPVH
140VNAWPVH
140VSAWPVH
Triple type
FDUM140VNAWTVH
140VSAWTVH
CEILING CASSETTE-4 WAY COMPACT TYPE
Twin type
FDTC100VNAWPVH
100VSAWPVH
125VNAWPVH
125VSAWPVH
Single type
FDT100VNAWVH
100VSAWVH
125VNAWVH
125VSAWVH
140VNAWVH
140VSAWVH
CEILING CASSETTE-4 WAY TYPE
Twin type
FDT100VNAWPVH
100VSAWPVH
125VNAWPVH
125VSAWPVH
140VNAWPVH
140VSAWPVH
Triple type
FDT140VNAWTVH
140VSAWTVH
Triple type
FDTC140VNAWTVH
140VSAWTVH
MICRO INVERTER PACKAGED AIR-CONDITIONERS
Single type
SRK100VNAWZR
100VSAWZR
WALL MOUNTED TYPE
Twin type
SRK100VNAWPZSX
100VSAWPZSX
125VNAWPZSX
125VSAWPZSX
140VNAWPZR
140VSAWPZR
Triple type
SRK140VNAWTZSX
140VSAWTZSX
DUCT CONNECTED-HIGH STATIC PRESSURE TYPE
Single type
FDU100VNAWVH
100VSAWVH
125VNAWVH
125VSAWVH
140VNAWVH
140VSAWVH
(OUTDOOR UNIT)
FDC100VNA-W
100VSA-W
125VNA-W
125VSA-W
140VNA-W
140VSA-W
(INDOOR UNIT)
FDT50VH
60VH
71VH
FDE50VH
60VH
71VH
V Multi System
Single type
FDE100VNAWVH
100VSAWVH
125VNAWVH
125VSAWVH
140VNAVWH
140VSAVWH
Twin type
FDE100VNAWPVH
100VSAWPVH
125VNAWPVH
125VSAWPVH
140VNAWPVH
140VSAWPVH
CEILING SUSPENDED TYPE
Triple type
FDE140VNAWTVH
140VSAWTVH
Manual No.'19 • PAC-SM-309
SERVICE MANUAL
updated January 27, 2020

Table of Contents

Question and Answer IconNeed help?

Do you have a question about the Mitsubishi Heavy Industries FDE71VH and is the answer not in the manual?

Mitsubishi Heavy Industries FDE71VH Specifications

General IconGeneral
Cooling Capacity7.1 kW
Heating Capacity8.0 kW
Energy Efficiency Ratio (Cooling)3.21
RefrigerantR410A
TypeAir Conditioner
Power Supply220-240V, 50Hz
Outdoor Unit Dimensions (HxWxD)640x800x290 mm

Summary

Service Manual Overview

1. Micro Inverter Packaged Air-Conditioners

1.2.1 Diagnosing Microcomputer Circuit

Details methods for diagnosing microcomputer circuit issues.

1.2.2 Troubleshooting Flow

Provides a systematic flow for troubleshooting various issues.

Anomalous Fan Motor

Describes causes and actions for anomalous fan motor operation.

Abnormal Temperature Sensor Detection

Details detection methods for abnormal temperature sensors.

Defrost Operation

Details defrost operation starting and ending conditions.

Compressor Protective Control

Details protective controls related to compressor revolutions.

Cooling High Pressure Protection

Explains cooling high pressure protection and anomalous stop controls.

Heating High Pressure Protection

Details heating high pressure protection and control value updates.

Low Pressure Control

Explains low pressure control and anomalous stop controls.

Over-Current Protection Controls

Details over-current protection controls for inverter output.

Power Transistor Protection (Voltage Drop)

Explains power transistor protection from voltage drop and anomalous stop.

Anomalous Power Transistor Current

Details prevention of over-current on the inverter.

Anomalous Inverter PCB

Explains detection of anomalies on the inverter PCB.

Refrigerant Quantity Shortage Protection

Details protection against insufficient refrigerant quantity.

Temperature Sensor Wire Faults

Explains detection of broken wires or short-circuits in temperature sensors.

Fan Motor Error

Details fan motor errors and compressor stopping conditions.

Anomalous Compressor Start/Stop

Explains anomalous stop conditions related to compressor start.

1.2.1 Diagnosing Microcomputer Circuit - Self-Diagnosis

Explains the self-diagnosis function using error codes and LED indicators.

Indoor Unit Self-Diagnosis - FDT Series

Details indoor unit self-diagnosis for FDT, FDTC, FDU, FDUM, FDE series.

Indoor Unit Self-Diagnosis - SRK Series

Details indoor unit self-diagnosis for SRK series.

SRK Series Indoor Unit Self-Diagnosis

Details indoor unit self-diagnosis for SRK series, including error codes and LEDs.

1.2.1 Diagnosing Microcomputer Circuit - Troubleshooting Procedure

Outlines the general procedure for troubleshooting when a fault occurs.

Troubleshooting - Indoor Unit

Provides a general guide to troubleshooting indoor unit issues.

Indoor Unit Troubleshooting - FDT Series

Details troubleshooting for FDT, FDTC, FDU, FDUM, FDE series indoor units.

PCB Setup (FDTC Series)

Instructions for setting up the PCB for FDTC series.

PCB Setup (FDU/FDUM/FDE Series)

Instructions for setting up the PCB for FDU, FDUM, FDE series.

SRK Series Inspection Procedures

Details inspection procedures for sensor and fan motor errors.

Indoor Electrical Checks

Details checks for indoor unit PCB and fan motor.

Indoor Fan Motor and PCB Checks

Provides procedures for checking indoor unit PCB output and fan motor resistance.

Indoor Unit PCB Fuse Inspection

Details the inspection procedure for blown fuses on the indoor unit PCB.

Troubleshooting - Outdoor Unit

Outlines troubleshooting steps for the outdoor unit, including safety precautions.

Anomalous Operation Data Check (RC-EX3A)

Explains how to check anomalous operation data using the RC-EX3A remote control.

Anomalous Operation Data Check (RC-E5)

Details checking anomalous operation data with the RC-E5 remote control.

Inverter Output Diagnosis - Inverter Checker

Explains the procedure for using an inverter checker to diagnose inverter output.

Troubleshooting Flow - FDT Series Troubles List

Lists common troubles and their reference pages for FDT, FDTC, FDU, FDUM, FDE series.

Troubleshooting Flow - SRK Series Troubles List

Lists common troubles and their reference pages for SRK series.

Troubleshooting - Operates but does not cool (FDT Series)

Details troubleshooting steps for 'Operates but does not cool' for FDT series.

Troubleshooting - Operates but does not heat (SRK Series)

Details troubleshooting steps for 'Operates but does not heat' for SRK series.

Troubleshooting - Earth Leakage Breaker

Provides troubleshooting steps for earth leakage breaker activation.

Troubleshooting - Heating Overload Operation

Guides troubleshooting for heating overload operations.

Troubleshooting - Drain Trouble (FDT Series)

Details troubleshooting for drain trouble in FDT, FDTC, FDU, FDUM series.

SRK Series Troubleshooting - No Cooling

Details troubleshooting for SRK series units that operate but do not cool.

Troubleshooting - Louver Motor Failure (FDT Series)

Provides troubleshooting steps for louver motor failure.

Troubleshooting - Power Source Error (Indoor PCB)

Details troubleshooting for power source errors affecting the indoor unit PCB.

Troubleshooting - Power Source Error (Remote Control)

Details troubleshooting for power source errors affecting the remote control.

Troubleshooting - Initial Communication Error (1/3)

Details troubleshooting for initial communication errors, part 1.

Troubleshooting - Initial Communication Error (2/3)

Continues troubleshooting for initial communication errors, part 2.

Troubleshooting - Initial Communication Error (3/3)

Concludes troubleshooting for initial communication errors, part 3.

Troubleshooting - No Display

Guides troubleshooting when the remote control displays nothing.

Troubleshooting - Remote Communication Circuit Error

Details troubleshooting for remote control communication circuit errors.

Troubleshooting - Operation Communication Error

Guides troubleshooting for communication errors occurring during operation.

Troubleshooting - Indoor Heat Exchanger Sensor Anomaly

Details troubleshooting for indoor heat exchanger temperature sensor anomalies.

Troubleshooting - Return Air Temperature Sensor Anomaly

Explains troubleshooting for return air temperature sensor anomalies.

Troubleshooting - Indoor Fan Motor Anomaly

Details troubleshooting for indoor fan motor anomalies.

Troubleshooting - Indoor Fan Motor Speed Anomaly

Guides troubleshooting for indoor fan motor rotation speed anomalies.

Troubleshooting - Remote Control Sensor Anomaly

Details troubleshooting for remote control temperature sensor anomalies.

Troubleshooting - Cooling Overload Operation

Guides troubleshooting for cooling overload operation.

Troubleshooting - Discharge Pipe Temperature Error

Details troubleshooting for discharge pipe temperature errors.

Troubleshooting - Outdoor Heat Exchanger Sensor Anomaly

Guides troubleshooting for outdoor heat exchanger temperature sensor anomalies.

Troubleshooting - Outdoor Air Temperature Sensor Anomaly

Details troubleshooting for outdoor air temperature sensor anomalies.

Troubleshooting - Discharge Pipe Temperature Sensor Anomaly

Guides troubleshooting for discharge pipe temperature sensor anomalies.

Troubleshooting - High Pressure Error (63H1 Activated)

Details troubleshooting for high pressure errors when the 63H1 switch is activated.

Troubleshooting - Current Cut (1/2)

Guides troubleshooting for current cut errors, part 1.

Troubleshooting - Current Cut (2/2)

Concludes troubleshooting for current cut errors, part 2.

Troubleshooting - Control PCB A/F Module Anomaly

Details troubleshooting for Control PCB A/F module anomalies.

Troubleshooting - Outdoor Fan Motor Anomaly

Guides troubleshooting for outdoor fan motor anomalies.

Troubleshooting - Low Pressure Error (1/2)

Details troubleshooting for low pressure errors, part 1.

Troubleshooting - Low Pressure Error (2/2)

Concludes troubleshooting for low pressure errors, part 2.

Related product manuals