Mitsubishi Heavy Industries STM25ZF-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 STM25ZF-S Specifications

General

Brand	Mitsubishi Heavy Industries
Model	STM25ZF-S
Category	Air Conditioner
Language	English

Summary

Safety Precautions

Installation Precautions

Essential safety guidelines for installing the air conditioner unit properly.

Operation Precautions

Critical safety measures to follow during the air conditioner's use.

Safety Precautions (Continued)

Precautions for Transfer or Repairs

Safety advice concerning moving, repairing, or handling the unit.

Choice of Operations and Features

Choice of Operations

Overview of available operating modes: HEAT, COOL, DRY, and AUTO.

Features

Details on timer functions, airflow adjustment, and special operational modes.

Name of Each Part and Its Function

Indoor Unit Parts

Identification and description of components within the indoor air conditioner unit.

Outdoor Unit Parts

Identification and description of components within the outdoor air conditioner unit.

Unit Indication Section

Unit ON/OFF Button

Explanation of the ON/OFF button located directly on the air conditioner unit itself.

Remote Control Operation and Indication

Operation Section

Details on the buttons and functions available on the remote control.

Indication Section

Explanation of the various indicators and lights displayed on the remote control.

AUTO Mode Operation Procedure

Temperature Adjustment During AUTO

COOL/HEAT/DRY Mode Operation Procedure

High Power Operation

Details on activating and using the High Power mode for intensified operation.

Economy Operation

Explanation of the Economy mode for energy-efficient operation.

Air Flow Direction Adjustment Procedure

Memory Flap Function

Explanation of how to memorize and recall flap positions for consistent airflow.

Fan Speed Selection

Information on selecting and adjusting the fan speed settings for desired airflow.

OFF-Timer Operation Procedure

ON-Timer Operation Procedure

Program Timer Operation Procedure

About Timer Operation

General information and features related to the unit's timer functions.

Present Time Setting Procedure

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

Emergency Run Operation

Remote Control Handling

Replacing Batteries

Instructions for replacing exhausted batteries in the remote control unit.

Remote Control Holder

Guidance on installing and using the remote control wall holder for convenience.

Remote Control Handling Warnings

Remote Control Operation Failures

Operating Hints for Efficiency

Maintenance Procedures

Before Maintenance

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

During Operational Season

Maintenance activities recommended during the period of regular unit use.

End of Season Maintenance

Procedures for preparing the unit for storage after the operating season ends.

Beginning of Season Maintenance

Steps for preparing the unit for operation at the start of a new season.

Correct Unit Installation Checks

Multiple Air-Conditioner Operation

Troubleshooting - Unit Not Working or Poor Performance

Unit Does Not Work At All

Essential checks to perform when the air conditioner fails to start or operate.

Poor Cooling or Heating Performance

Common issues and checks for reduced cooling or heating efficiency.

Poor Cooling Issues

Specific checks and troubleshooting steps for insufficient cooling problems.

Troubleshooting - Operational Anomalies

Addressing Operational Issues

Solutions for various anomalies like smells, noises, and remote signal problems.

Contacting Distributor for Urgent Issues

Critical situations that require immediate professional assistance from a dealer.

Air-Conditioner Operating Conditions

Power Blackout Auto Restart Function

HEAT Mode Operation Characteristics

Mechanism of Heat Mode

How the heat pump mechanism functions to heat the room effectively.

Defrosting Process

Information on the automatic defrosting cycle and its indicators during heating.

Self Diagnosis Function