Mitsubishi Heavy Industries STM35ZF-S User Manual

This air conditioner complies with EMC Directive 89/336/EEC, LV
Directive 73/23/EEC.
RJH012A011.EN
ENGLISH
STM25ZE/ZF-S
STM35ZE/ZF-S
STM50ZE/ZF-S
STM60ZE/ZF-S
AIR-CONDITIONING & REFRIGERATION SYSTEMS HEADQUARTERS
16-5, 2-Chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan
Fax: (03) 6716-5926
MITSUBISHI HEAVY INDUSTRIES EUROPE, LTD.
AIR-CONDITIONER DIVISION
3rd Floor Thavies Inn House 3-4 Holborn Circus London EC1N 2HA, ENGLAND
Phone: 44(0)20 7842 8171
Fax: 44(0)20 7842 8104
USER’S MANUAL
AIR-CONDITIONER
RJH012A011_Cover.pm 10/19/05, 1:34 PM1
Black

Mitsubishi Heavy Industries STM35ZF-S Specifications

General

Cooling Capacity	3.5 kW
Heating Capacity	4.0 kW
Power Supply	220-240 V, 50 Hz
Energy Efficiency Class Cooling	A++
Energy Efficiency Class Heating	A+
Refrigerant	R32
Type	Split System
Energy Efficiency Ratio (EER)	3.5
Outdoor Unit Dimensions (W x H x D)	780 x 540 x 285 mm
Energy Efficiency Ratio (Cooling)	3.5
Energy Efficiency Ratio (Heating)	4.0
Noise Level (Indoor Unit)	21 dB

Summary

Safety Precautions

Installation Precautions

Important safety guidelines for installing the air-conditioner unit.

Operation Precautions

Essential safety guidelines for operating the air-conditioner unit.

Precautions for Transfer or Repairs

Safety measures for moving or repairing the air-conditioner system.

Choice of Operations and Features

Choice of Operations

Explains different operating modes like HEAT, COOL, DRY, and AUTO.

Features

Details special features like Amenity facility, Timer, High Power, and Economy modes.

Name of Each Part and Its Function

Indoor Unit Components

Identifies and explains parts of the indoor air-conditioner unit.

Outdoor Unit Components

Identifies and explains parts of the outdoor air-conditioner unit.

Operation and Indication Section

Unit Indication Section

Explains the indicator lights on the indoor unit.

Unit ON/OFF Button

Describes the function of the ON/OFF button on the unit itself.

Remote Control Operation

Remote Control Operation Section

Details the operation and indication section of the remote control.

Remote Control Transmission

Explains how the remote control transmits signals to the unit.

AUTO Mode Operation Procedure

AUTO Mode Operation Steps

Step-by-step guide to operating the air-conditioner in AUTO mode.

Temperature Adjustment in AUTO Mode

Explains how to adjust temperature settings during AUTO mode operation.

COOL/HEAT/DRY Mode Operation Procedure

Mode Operation Steps

Step-by-step guide for COOL, HEAT, and DRY operation modes.

High Power Operation

Details the HIGH POWER mode for intensified cooling or heating.

Economy Operation

Explains the ECONOMY mode for energy-saving and comfortable operation.

Airflow and Fan Speed Control

Airflow Direction Adjustment

How to adjust the up/down airflow direction using the remote control.

Memory Flap Function

How the unit remembers and repeats a set flap position.

Fan Speed Selection

Explains how to select fan speed for cooling or heating operations.

Timer Operation Procedures

OFF-TIMER Operation

Step-by-step guide for setting the unit to stop automatically.

ON-TIMER Operation

Step-by-step guide for setting the unit to start automatically.

Program and Time Setting

Program Timer Procedure

Setting both ON and OFF timers for daily automatic operations.

About Timer Operation

General information about timer functions and amenity facilities.

Present Time Setting

How to set the current time on the remote control for accurate timer functions.

Emergency Operation and Remote Control

Emergency Run Operation

How to operate the unit using the unit's ON/OFF button when the remote is unavailable.

Remote Control Battery Replacement

Instructions for replacing batteries in the remote control.

Remote Control Holder Usage

Guidance on mounting the remote control holder on a wall.

Operating Hints

Remote Control Handling Warnings

Important precautions for safe and effective handling of the remote control.

Troubleshooting Remote Control Issues

Steps to take when the air-conditioner fails to respond to the remote control.

Tips for Economic and Comfortable Use

General advice for optimizing unit performance and comfort.

Maintenance

Pre-Maintenance Checks

Essential steps to take before performing any maintenance on the unit.

Operational Season Maintenance

Guidance for maintenance tasks performed while the unit is in regular use.

End of Season Maintenance

Procedures for preparing the unit for storage at the end of the cooling/heating season.

Beginning of Season Maintenance

Procedures for preparing the unit for operation at the start of the season.

Installation and Multi-Unit Operation

Correct Unit Installation

Guidelines for choosing an appropriate location for unit installation.

Operating Noise Considerations

Advice on managing unit noise and vibration during installation and operation.

Professional Inspection and Maintenance

Recommendation for periodic professional inspection and maintenance of the unit.

Multiple Air-Conditioner Operation

Simultaneous Operation Modes

How multiple indoor units operate together, including mode conflicts.

Automatic Operation Features

How the unit automatically selects modes based on room temperature.

Refrigerant Recovery Process

Explanation of refrigerant recovery to maintain performance with multiple units.

Troubleshooting Common Issues

Unit Not Operating

Checks to perform when the air-conditioner does not start or operate.

Performance Issues (Cooling/Heating)

Checks for common issues related to insufficient cooling or heating performance.

Poor Cooling Performance

Specific checks for problems encountered during cooling operation.

Important Operational Notes

Unit Restart Delay

Explains the 3-minute protection timer preventing immediate restarts.

Heating Operation Airflow Delays

Reasons for no airflow during heating start-up (HOT KEEP).

Dry Operation Airflow

Reasons for no airflow during DRY operation start-up.

Steam During Cooling Operation

Explains steam formation during COOL mode, often due to defrosting.

When to Contact Your Distributor

Critical Malfunctions Requiring Immediate Action

Situations requiring immediate shutdown and dealer contact for safety.

Electrical Issues and Interference

Conditions like blown fuses or equipment malfunction indicating serious problems.

Operational Anomalies

Unusual noises or faulty button movements requiring dealer attention.

Operating Conditions and Functions

Operating Condition Ranges

Specifies the recommended temperature and humidity ranges for cooling and heating.

Power Blackout Auto Restart

Explains the function that resumes operation after a power interruption.

Heat Mode Characteristics

Details how the HEAT mode works, including capacity and defrosting.

Self Diagnosis Function

Error Codes by RUN Light Status

Lists error codes indicated by the RUN light and their causes.

Error Codes by TIMER Light Status

Lists error codes indicated by the TIMER light and their causes.

Error Codes with Flashing/Solid RUN Light

Lists error codes indicated by RUN light patterns and their causes.