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Toshiba MMY-MAP1604HT7P - User Manual

Toshiba MMY-MAP1604HT7P
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SERVICE MANUAL
AIR-CONDITIONER (MULTI TYPE)
<SUPER MODULAR MULTI SYSTEM - i>
Outdoor Unit
Model name:
FILE NO. SVM-13024-2
MMY-MAP0804HT8(J)P
MMY-MAP1004HT8(J)P
MMY-MAP1204HT8(J)P
MMY-MAP1404HT8(J)P
MMY-MAP1604HT8(J)P
MMY-MAP0804HT8(J)P-E
MMY-MAP1004HT8(J)P-E
MMY-MAP1204HT8(J)P-E
MMY-MAP1404HT8(J)P-E
MMY-MAP1604HT8(J)P-E
MMY-MAP0804HT8(J)P-TR
MMY-MAP1004HT8(J)P-TR
MMY-MAP1204HT8(J)P-TR
MMY-MAP1404HT8(J)P-TR
MMY-MAP1604HT8(J)P-TR
<Heat Pump Model>
<4-way Cassette Type>
(MMU-AP***4HP-E) (Made in Thailand model) SVM-13-011
<2-way Cassette Type>
(MMU-AP
***
2WH) A10-007
<Concealed Duct Standard Type>
(MMD-AP
***
6BH-E) A12-005
<Slim Duct Type>
(MMD-AP0244SPH-E, AP0274SPH-E) A12-005
Fresh Air Intake Indoor Unit Type
(MMD-AP
****
HFE) A06-016
<Air to Air Heat Exchanger with DX Coil Unit Type>
(MMD-VN
*****
HEXE
*
) A10-022-2
High-wall Type
(MMK-AP
***
3H) (Made in Thailand model) SVM-09-059
Console Type
(MML-AP
****
NH-E) (Made in Thailand model) SVM-11-036
Other indoor units
(MM
*
-AP
*****
H
*
) A10-033
MMY-MAP0804HT7(J)P
MMY-MAP1004HT7(J)P
MMY-MAP1204HT7(J)P
MMY-MAP1404HT7(J)P
MMY-MAP1604HT7(J)P
MMY-MAP0804T8(J)P
MMY-MAP1004T8(J)P
MMY-MAP1204T8(J)P
MMY-MAP1404T8(J)P
MMY-MAP1604T8(J)P
MMY-MAP0804T8(J)P-T
MMY-MAP1004T8(J)P-T
MMY-MAP1204T8(J)P-T
MMY-MAP1404T8(J)P-T
MMY-MAP1604T8(J)P-T
MMY-MAP0804T8(J)P-SG
MMY-MAP1004T8(J)P-SG
MMY-MAP1204T8(J)P-SG
MMY-MAP1404T8(J)P-SG
MMY-MAP1604T8(J)P-SG
<Cooling Only Model>
MMY-MAP0804T8(J)P-ID
MMY-MAP1004T8(J)P-ID
MMY-MAP1204T8(J)P-ID
MMY-MAP1404T8(J)P-ID
MMY-MAP1604T8(J)P-ID
This service manual provides relevant explanations about new outdoor unit (SMMS-i).
Please refer to the following service manuals for each indoor units.

Table of Contents

Questions and Answers

  • T
    ttaylorAug 8, 2025
    What to do if the Toshiba Air Conditioner indoor remote controller is not accepted and a check code is displayed?
    • J
      janet80Aug 8, 2025
      If the indoor remote controller isn't working and a check code appears on the interface PC board of the header unit, the issue might stem from unset addresses or incorrect power settings. Start by setting up the addresses for the line and indoor units. If you're using group control, make sure a group address is set up. Also, confirm that the indoor unit power is turned on, ensuring you power on the indoor units before the outdoor units. Finally, check that the indoor/outdoor communication line is correctly connected to the U1/U2 terminal of the header unit.
  • D
    Donna BellAug 18, 2025
    What to do if my Toshiba Air Conditioner is not accepting operation from the indoor remote controller?
    • J
      Jeffrey HudsonAug 18, 2025
      If your Toshiba Air Conditioner indoor unit isn't responding to the remote controller and there's no check code on the header unit's interface PC board, the problem likely lies in the communication wiring or address settings. First, check the communication line between the indoor and outdoor units and modify the wiring if necessary. Next, ensure that both the line address and indoor address are correctly set for the unit that's not responding. If you are using indoor group control, make sure that the power of the header unit of the group is turned on. If the unit is under individual control, verify that the group address is set to “0”. Finally, confirm that the power is turned on for the unit and that the indoor remote controller is properly wired.
  • C
    Cynthia WolfAug 28, 2025
    Why does my Toshiba MMY-MAP1604HT7P Air Conditioner display a lower number of connected units after address setup?
    • K
      Kerry FrazierAug 28, 2025
      If you're encountering a situation where a lower number of connected units is displayed after address setup, it might be due to miswiring or unconnected wires in the communication lines. * For outdoor units, check the communication lines between them. If you find any issues, correct the wiring, set up the addresses again, and then verify the number of connected outdoor units. * Similarly, inspect the communication lines between indoor units. Correct any miswiring, set up the addresses again, and check the number of connected indoor units. Also, verify the wiring of the indoor remote controller.

Summary

Outdoor Unit Model Identification

Heat Pump and Cooling Only Models

Lists all outdoor unit model names categorized by type: Heat Pump and Cooling Only.

Safety Cautions and Precautions

General Safety Guidelines

Essential safety guidelines for handling the air conditioner unit, including protective gear and warning indications.

1 Wiring Diagrams

1-1. Outdoor Unit Wiring Diagrams

Electrical wiring diagrams specific to the outdoor unit.

1-2. Indoor Unit Wiring Diagrams

Electrical wiring diagrams for various types of indoor units.

2 Parts Rating and Layout

2-1. Outdoor Unit Parts Rating (50 Hz)

Lists and rates parts for specific 50Hz outdoor unit models.

2-5. Outdoor Unit Parts Layout

Visual representation of the location of parts within the outdoor unit.

3 Refrigerant Piping System Drawing

Outdoor Unit Refrigerant Piping Diagrams

Schematic drawings of the refrigerant piping system for outdoor units.

4 Combined Refrigerant Piping System Schematic Diagrams

Normal Operation Refrigerant Schematics

Diagrams illustrating normal cooling, defrost, and heating operations under different conditions.

5 Control Outline

Indoor Unit Control Specifications

Details the control specifications and functions for indoor units.

6 Applied Control and Functions

6-1. Indoor Controller Block Diagram

Block diagram illustrating the indoor controller's architecture and connections.

6-8. Outdoor Unit Applied Control Functions

Explains various applied control functions for the outdoor unit.

7 Test Operation Procedures

7-1. Test Operation Procedure Summary

Outlines the steps and summary for performing a test operation.

7-2. Pre-Test Operation Checks

Lists essential checks to perform before powering on for test operation.

8 Troubleshooting Guide

8-1. Troubleshooting Overview

Introduces the troubleshooting process, required tools, and common behaviors.

8-2. Troubleshooting Method by Check Code

Provides methods for troubleshooting based on detected check codes from various devices.

9 Backup Operation (Emergency Operation)

9-1. Notes for Backup Operation

Important notes and guidelines regarding backup operation procedures for fault conditions.

10 Outdoor Unit Refrigerant Recovery

10-1. Refrigerant Recovery Procedures

Procedures for recovering refrigerant from failed outdoor units using pump-down.

11 Compressor Replacement

11-1. Compressor Replacement Outline

Step-by-step outline for replacing a compressor, including oil adjustment.

12 Outdoor Unit Parts Replacement

13 P.C. Board Exchange Procedures

Detailed procedures for exchanging various P.C. boards in indoor and outdoor units.

13 P.C. Board Exchange Procedures

13-1. Indoor P.C. Board Replacement

Detailed steps and methods for replacing indoor unit P.C. boards.

13-2. Outdoor P.C. Board Replacement

Detailed steps and procedures for replacing outdoor unit P.C. boards.

14 Exploded Diagram and Parts List

SMMS-i Outdoor Unit Parts List

Exploded view and parts list for specific SMMS-i outdoor unit models.

Toshiba MMY-MAP1604HT7P Specifications

General IconGeneral
BrandToshiba
ModelMMY-MAP1604HT7P
CategoryAir Conditioner
LanguageEnglish

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