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Mitsubishi Heavy Industries SRC35ZJ-SA User Manual

Mitsubishi Heavy Industries SRC35ZJ-SA
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TECHNICAL MANUAL
Manual No.'10•SRK-T-098
INVERTER WALL MOUNTED TYPE
RESIDENTIAL AIR-CONDITIONERS
(Split system, air to air heat pump type)
Indoor unit / Outdoor unit
SRK25ZJ-S / SRC25ZJ-SA
SRK35ZJ-S / SRC35ZJ-SA
SRK20ZJX-S / SRC20ZJX-SA
SRK25ZJX-S / SRC25ZJX-SA
SRK35ZJX-S / SRC35ZJX-SA

Table of Contents

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Mitsubishi Heavy Industries SRC35ZJ-SA Specifications

General IconGeneral
TypeSplit System
Cooling Capacity3.5 kW
Heating Capacity4.0 kW
Energy Efficiency Ratio (EER)3.21
Power Supply220-240V, 50Hz
Indoor Unit Dimensions (W x H x D)845 x 275 x 228 mm
Outdoor Unit Dimensions (W x H x D)780 x 540 x 290 mm
Weight (Indoor Unit)10 kg
RefrigerantR32
Indoor Unit Weight10 kg
Energy Efficiency Ratio (Cooling)3.21 W/W
Energy Efficiency Ratio (Heating)3.61 W/W
Noise Level (Indoor Unit)21 dB(A)

Summary

MHI TECHNICAL MANUAL

SPECIFICATIONS

EXTERIOR DIMENSIONS

Indoor units

Dimensions and installation clearances for indoor units.

Outdoor units

Dimensions and installation clearances for outdoor units.

Remote controller

Dimensions and specifications for remote controllers.

ELECTRICAL WIRING

Indoor units

Electrical wiring diagrams for indoor units.

Outdoor units

Electrical wiring diagrams for outdoor units.

NOISE LEVEL

PIPING SYSTEM

RANGE OF USAGE & LIMITATIONS

Selection chart

Guidance on selecting the correct capacity based on operating conditions.

APPLICATION DATA

Installation of indoor unit

Guidelines and safety precautions for indoor unit installation.

Installation of outdoor unit

Guidelines and safety precautions for outdoor unit installation.

OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

Models SRK25,35ZJ-S

Operation control details for SRK25 and 35ZJ-S models.

Models SRK20~35ZJX-S

Operation control details for SRK20-35ZJX-S models.

MAINTENANCE DATA

Troubleshooting Procedures

Guides for diagnosing and resolving common operational issues and errors.

Self-diagnosis table

Table correlating error codes, symptoms, causes, and display indicators.

Service mode (Trouble mode access function)

How to access and use the service mode for diagnostics.

OPTION PARTS

Installation of wired remote controller (RC-E4)

Instructions for installing the optional wired remote controller.

SAFETY PRECAUTIONS

CAUTIONS FOR INSTALLATION

Essential safety warnings and precautions for installation.

SELECTION OF INSTALLATION LOCATION

Guidelines for choosing the optimal and safe location for unit installation.

REFRIGERANT PIPING WORK

On-site piping work

Detailed procedures for on-site refrigerant piping work.

HAULAGE AND INSTALLATION

Selecting the installation location

Criteria for choosing an appropriate installation location.

Installation space

Requirements for installation space around the unit.

Installation

Specific instructions for the physical installation of the unit.

DRAIN PIPING WORK

ELECTRICAL WIRING WORK

OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

Operation control function by remote controller

Explanation of remote controller functions.

Flap and louver control

3D auto operation

Timer operation

Installation location setting

Outline of heating operation

Outline of cooling operation

Outline of automatic operation

Protective control function

Frost prevention control (During cooling or dehumidifying)

Protective function to prevent frost formation on the indoor heat exchanger.

Cooling overload protective control

Protective function for cooling operation due to high outdoor temperatures.

Cooling high pressure control

Control to prevent anomalous high pressure during cooling.

Cooling low outdoor temperature protective control

Protective function for cooling operation in low outdoor temperatures.

Heating high pressure control

Protective function to prevent anomalous high pressure during heating.

Heating overload protective control

Protective function to prevent overload operation during heating.

Heating low outdoor temperature protective control

Protective function for heating operation in low outdoor temperatures.

Compressor overheat protection

Protection mechanism to prevent compressor damage from overheating.

Current safe

Control to prevent overcurrent, protecting the inverter and compressor.

Current cut

Protection mechanism to prevent overcurrent by cutting the inverter's current.

Outdoor unit failure

Function to detect and stop the unit in case of outdoor unit malfunctions.

Indoor fan motor protection

Protection for the indoor fan motor against low-speed operation.

Serial signal transmission error protection

Protection against malfunctions caused by communication errors.

Rotor lock

Protection against compressor rotor lock.

Outdoor fan motor protection

Protection for the outdoor fan motor against prolonged low-speed operation.

Outdoor fan control at low outdoor temperature

Controls for the outdoor fan speed at low ambient temperatures.

Troubleshooting procedure (If the air conditioner does not run at all)

Troubleshooting procedure (If the air conditioner runs)

Self-diagnosis table

Service mode (Trouble mode access function)

Error code, stop code table

Table of error codes, stop codes, causes, and troubleshooting steps.

Inspection procedures corresponding to detail of trouble

Sensor error

Inspection procedures for common sensor errors.

Indoor fan motor error

Troubleshooting steps for indoor fan motor errors.

Trouble of outdoor unit

Outdoor fan motor error

Troubleshooting steps for outdoor fan motor errors.

Phenomenon observed after shortcircuit, wire breakage on sensor

Indoor unit

Troubleshooting phenomena related to sensors in the indoor unit.

Checking the indoor electrical equipment

Indoor PCB check procedure

Steps to check the indoor PCB for proper operation.

Indoor unit fan motor check procedure

Procedure for checking the indoor unit fan motor.

How to make sure of wireless remote controller

Outdoor unit inspection points

Inspection power transistor

Procedure for inspecting the power transistor.

Inspection of outdoor fan motor

Procedure for checking the outdoor unit fan motor.

Inspection of electronic expansion valve

Procedure for inspecting the electronic expansion valve.

OPTION PARTS

Installation of wired remote controller (RC-E4)

Instructions for installing the optional wired remote controller.

Interface kit (SC-BIKN-E)

Connection of super link E board

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