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Mitsubishi SRC50HA User Manual

Mitsubishi SRC50HA
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Page #65 background image
1-65
(2) Indication of Self Diagnosis (Indoor unit)
(3) Troubleshooting
Abnormality of outdoor unit [Compressor malfunction of insufficient gas (refrigerant)]
TIMER lamp
is lights
continuously.
RUN lamp is flashing.
(1 Time flash.)
RUN lamp is flashing.
(2 Time flash.)
RUN lamp is flashing.
(6 Time flash.)
TIMER lamp is flashing.
(5 Time flash.)
Connect of Defect
Abnormality of heat
exchanger thermistor.
Abnormality of room
temperature thermistor.
Abnormality of indoor
fan motor.
Abnormality of outdoor
unit.
Place of defect
¡ Disconnection of heat exchanger thermistor.
¡ Disconnection of room temperature
thermistor.
¡ Fan motor is defective.
¡ Printed circuit board is defective.
¡ Compressor is defective.
¡ Capacitor is defective.
¡ Gas is short.
RUN lamp is
lights
continuously.
Abnormality of indoor fan motor (Fan motor defective, printed circuit board defective)
Yes
Yes
Yes
Yes
No
Yes
No
No
No
No
No
Yes
Yes
The fan motor is defective.
Is the connector connection
good?
Repair the connector.
Is voltage being applied to the
fan motor?
The indoor circuit board
is defective.
Replace protective device.
Replace capacitor.
Is capacitor normal?
Insufficient gas.
Replace compressor.
Is protective device normal?
Does compressor operate?
Clogging of capillary tube. etc.
Is abnormality the same after
gas charging?
Is refrigerant circulation
volume normal?
Note (1) When an abnormality is indicated on the outdoor unit for the cooling only model, check the fuse on the outdoor unit. If the fuse is burnt out,
replace it with new one.
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Mitsubishi SRC50HA Specifications

General IconGeneral
BrandMitsubishi
ModelSRC50HA
CategoryAir Conditioner
LanguageEnglish

Summary

Mitsubishi Heavy Air Conditioners 2002 Lineup

Wall Mounted Split Systems

Details the range of wall-mounted split system air conditioners for the 2002 season.

General Information

Specific Features

Details on the specific features of the Mitsubishi Daiya SRK series split and wall mounted air conditioners.

How to Read the Model Name

Explanation of the model naming convention for Mitsubishi air conditioners, detailing each component.

Selection Data

Specifications

Technical specifications for various SRK/SRC models, including capacity, power, and dimensions.

Range of Usage and Limitations

Defines the applicable operating temperature ranges and limitations for cooling and heating operations.

Exterior Dimensions

Provides detailed dimensional drawings and measurements for indoor and outdoor units.

Piping System

Electrical Data

Electrical Wiring Diagrams

Wiring diagrams for various models, detailing component connections and color codes.

Operation Control by Microcomputer

Operation Control Table

Details on various functions and their corresponding operation controls, including remote control and microcomputer functions.

Back-up Switch Operation

Instructions on using the back-up switch for unit operation when the remote controller is unavailable.

Automatic Operation Determination

Details on how the unit automatically determines the operation mode based on room temperature.

Established Temperature Settings

Using the remote controller to set desired temperatures for cooling, thermal dry, and heating modes.

Comfort Timer Settings

How to use the comfort timer function for pre-heating or pre-cooling based on temperature.

Selection Chart

Capacity vs. Temperature Coefficients

Charts showing how cooling/heating capacity coefficients vary with indoor/outdoor temperatures.

Capacity Correction for Piping Length

Table detailing capacity correction factors based on refrigerant piping length.

Heating Capacity Correction for Frosting

Adjustment coefficients for heating capacity considering outdoor heat exchanger frosting.

Test Run and Installation Precautions

Additional Refrigerant Charge Guidelines

Guidelines for adding refrigerant based on piping length for specific model series.

Insulation of Connecting Portions

Instructions on insulating refrigerant piping connections to prevent moisture and dripping.

Standard Operation Data

Standard operating data including pressure, temperature difference, and current for various models.

Remote Controller Installation Precautions

Information on the optimal range and conditions for wireless remote controller operation.

Maintenance Data

Troubleshooting Guide

Troubleshooting steps for common issues before replacing PCB, covering power, settings, and user understanding.

Self-Diagnosis Indications

Self-diagnosis indicators based on lamp flashing patterns for various unit defects.

Troubleshooting Specific Faults

Diagnostic flows for outdoor unit abnormalities and indoor fan motor issues.

Thermistor and Thermostat Troubleshooting

Troubleshooting for thermistor issues, including connector checks and resistance readings.

Trouble Diagnostic Procedures

Flowcharts for diagnosing unit malfunctions, fan operation, and electrical faults.

Remote Controller Check and Reset

Procedures to check the functionality and reset the remote controller for specific models.

Power Supply Remote Operation

Operation Contents and Modification

Details on remote operation via power supply and PCB modification for 40 models.

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