Toshiba MMY-MAP1404 Series User Manual

Q ui c k referen c e
R410A
FILE NO. :A11-005

Toshiba MMY-MAP1404 Series Specifications

General

Brand	Toshiba
Model	MMY-MAP1404 Series
Category	Air Conditioner
Language	English

Summary

Refrigerant Piping

Allowable Length and Height Difference

Defines limits for refrigerant pipe length and height differences between units.

System Restriction

Cautions for Installation

Important safety and procedural guidelines for unit installation.

Adding Refrigerant

Calculation of Additional Refrigerant Charge

Formula and method for calculating the correct refrigerant amount.

Charging of Refrigerant

Procedure for adding refrigerant to the system.

Refrigerant Piping Systematic Drawing

Explanation of Functional Parts

Troubleshooting: Check Codes and Error Display

Remote Controller and Outdoor Unit Check Codes

Lists error codes displayed on controllers and outdoor units for diagnostics.

System Address Setup

Check at Main Power-on

Initial checks required for the outdoor and indoor units after powering on.

Address Setup Procedures and Precautions

Precautions for Address Setup

Important notes and warnings before performing address setup.

Address Setup and Check Procedure

Step-by-step guide for setting up and verifying unit addresses.

Address Setup: Procedure 1 (Single Refrigerant Line)

Address Setup: Procedure 2 (Multiple Refrigerant Lines)

Central Control Address Setup

Switch Settings for Central Control Operation

Outdoor Unit Manual Switch Settings

Manual switch configurations for outdoor units in central control.

Indoor Unit Automatic Setting

How indoor units are automatically set up in central control.

Manual Address Setup via Remote Controller

Resetting Unit Addresses to Factory Default

Method 1: Individual Address Reset

Resetting addresses one by one using a remote controller.

Method 2: Bulk Address Reset

Resetting all indoor unit addresses on a line from the outdoor unit.

Address Setup for New and Extended Indoor Units

Method 1: Individual Setup via Remote Controller

Setting addresses for new units using a wired remote controller.

Method 2: Setup via Outdoor Unit

Setting addresses for new units directly from the outdoor unit.

Post-Address Setup Checks for Central Control

Troubleshooting: Remote Controller Check Codes

Check Codes on Remote Controller & Header Unit Display

Lists error codes and their causes/countermeasures for remote controllers.

Troubleshooting: Operation and Communication Issues

Remote Controller Unresponsive with Check Code

Issues where the remote controller is unresponsive, and a check code is shown.

No Check Code, but Indoor Unit Unresponsive

Problems where the indoor unit doesn't respond without an error code.

Troubleshooting: Connected Unit Count Errors

Incorrect Connected Unit Counts After Address Setup

Explains causes for incorrect counts of connected indoor/outdoor units.

Remote Controller Monitoring Functions: Unit Status

Confirming Indoor Unit Addresses and Positions

How to check indoor unit addresses and their positions using the remote controller.

Remote Controller Operations: Unit Address Checks

Checking Indoor Unit Addresses via Remote Controller

How to view all indoor unit addresses connected to a refrigerant line.

Changing Indoor Unit Addresses

Procedure for modifying indoor unit addresses using a wired remote controller.

Remote Controller Operations: Changing Unit Addresses

Changing All Indoor Unit Addresses

Method to change addresses for all indoor units in a refrigerant line.

System Error Clearing Functions

Clearing Errors via Main Remote Controller

Steps to clear errors using the main remote controller's service monitor.

Clearing Errors via Interface PC Board Switches

How to clear errors using switches on the header unit's interface PC board.

Clearing Errors by Resetting Power

Procedure to clear errors by resetting the system power supply.

Setting Indoor Unit Function DN Codes

Procedure to Set Indoor Unit Function DN Codes

Step-by-step guide to set function codes (DN codes) for indoor units.

DN Code Table for Indoor Unit Functions

Indoor Unit Start/Stop Functions

Cooling Test Operation

Initiates cooling test mode for all connected indoor units.

Heating Test Operation

Initiates heating test mode for all connected indoor units.

Batch Start/Stop Operations

Functions to collectively start or stop all connected indoor units.

Individual Unit Start/Stop/Test Operation

Controls individual indoor units for starting, stopping, or testing.

Indoor Unit Information Display (Header Unit)

Outdoor Unit Information Display (Individual Unit)

Display of Outdoor Unit Information (Each Unit)

Displays operational data for each outdoor unit, such as HP capacity and valve status.

Display of Outdoor Cycle Data (Each Unit)

Shows cycle data like pressure and sensor readings for each outdoor unit.

Outdoor Unit Information Display (Cycle Data)

Display of Outdoor Cycle Data (Header Unit)

Displays outdoor cycle data for selected follower units on the header unit.

Indoor Unit Information Display (Header Unit)

Display of Indoor Unit Information (Header Unit Only)

Shows indoor unit details like communication status and check codes on the header unit.

Outdoor EEPROM Error Code Display

Shows the latest error codes written in the outdoor unit's EEPROM.

Forced Control of PMV and Solenoid Valves

Forced PMV Operation (Indoor Units)

Controls Pulse Motor Valves (PMV) in indoor units for opening/closing.

Forced Solenoid Valve Operation (Outdoor Unit)

Controls solenoid valves in outdoor units for open/close functions.

Abnormal Unit Detection and Forced PMV Control

Abnormal Outdoor Unit Fan Operation Method

Method to discriminate abnormal outdoor units using fan operation.

Forced PMV Operation (Outdoor Unit)

Forcedly opens or closes PMVs in outdoor units.

Backup Operation and Emergency Procedures

Note for Backup Operation

Important notes regarding backup operation procedures and fault types.

Compressor Backup Operation Setting Procedure

Procedures for setting up compressor backup operation in case of failure.

Compressor Backup Operation Settings

Outdoor Unit Backup Operation: Follower Unit Failure

Outdoor Unit Backup Operation: Header Unit Failure

Outdoor Unit Refrigerant Recovery Method

Note for Refrigerant Recovery Operation

Important considerations and notes for performing refrigerant recovery.

Refrigerant Recovery Procedure A (No Backup)

Procedure for recovering refrigerant when no backup operation is set.

Refrigerant Recovery Procedure A (No Backup)

Outdoor Unit Pressure Adjustment Setup

Steps to adjust outdoor unit pressure during refrigerant recovery.

Refrigerant Recovery Procedure B (With Backup)

System Operation During Failed Unit Repair