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Toshiba MMY-MAP1004HT7P - User Manual

Toshiba MMY-MAP1004HT7P
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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

  • E
    Elizabeth HarrisAug 8, 2025
    What to do if the Toshiba MMY-MAP1004HT7P indoor remote controller is not accepted and a check code is displayed?
    • V
      Vincent ChoiAug 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.
  • O
    Oscar CainAug 17, 2025
    What to do if my Toshiba MMY-MAP1004HT7P is not accepting operation from the indoor remote controller?
    • C
      connor71Aug 17, 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.
  • P
    Peter WilliamsAug 27, 2025
    Why does my Toshiba Air Conditioner display a lower number of connected units after address setup?
    • C
      Carrie MartinezAug 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

SAFETY CAUTION

1 Wiring Diagrams

Provides schematic diagrams for electrical connections of outdoor and indoor units for various system configurations.

1-1. Outdoor Unit

Details the wiring diagram for specific outdoor unit models (MMY-MAP0804*, MAP1004*, and MAP1204*).

1-2. Indoor Unit

Covers wiring diagrams for various indoor unit types, including cassette, duct, ceiling, and high-wall models.

5 Control Outline

6 Applied Control and Functions (including Circuit Configuration)

Explains the overall control logic, functions, and applied controls for indoor units and system configurations.

6-1. Indoor Controller Block Diagram

Illustrates the internal block diagram of the indoor unit controller, detailing components and connections.

6-8. Applied Control of Outdoor Unit

Details specific control functions for the outdoor unit, such as fan control, operation modes, and compressor control.

7 TEST OPERATION

7-2. Check Items before Test Operation (before powering-on)

Lists essential checks for electric wiring and system connections required before initiating a test operation.

7-4. Address Setup

Explains the procedures for setting system addresses for indoor and outdoor units, crucial for network communication.

7-5. Troubleshooting in Test Operation

Provides guidance on diagnosing and resolving issues encountered during test operations, including check codes.

8 TROUBLESHOOTING

8-5. Diagnosis procedure for each check code

Details step-by-step procedures for diagnosing faults based on check codes displayed on remote controllers and outdoor units.

11 REPLACING COMPRESSORS

11-1. Compressor Replacement Procedure (Outline)

Outlines the essential steps for safely replacing a compressor, including refrigerant recovery and oil management.

Warning Indications on the Air Conditioner Unit

PRECAUTIONS FOR SAFETY

General Safety Precautions

Covers general safety guidelines including protective gear, handling, and avoiding hazards during installation and maintenance.

Electrical Safety Precautions

Details critical safety measures related to electrical work, circuit breakers, and preventing electric shock.

Grounding and Modification

Emphasizes the importance of proper grounding and prohibits product modifications to prevent hazards.

WARNING

General Safety

Provides essential safety advice for repair work, including handling refrigerants, protective measures, and electrical safety.

Electrical Work Safety

Outlines mandatory safety practices for electrical wiring and repairs, including qualifications and protective gear.

Working at Heights Safety

Specifies safety precautions for tasks performed at heights, including ladder use and securing the work area.

OUTDOOR UNIT PARTS REPLACEMENT METHODS

12-1. Cabinet

Provides instructions for detaching and attaching the outdoor unit cabinet, including screw locations.

12-2. Propeller fan Fan motor

Details the procedure for replacing the propeller fan and fan motor, including CAUTIONary notes for attachment.

12-4. Inverter assembly

Describes the detachment and attachment process for the inverter assembly, including handling of reactor leads and screws.

13 P.C. BOARD EXCHANGE PROCEDURES

13-1. Replacement of Indoor P.C. Boards

Explains the procedure for replacing indoor P.C. boards, including reading and writing EEPROM data.

13-2. Replacement of Outdoor P.C. Boards

Covers the replacement of various outdoor P.C. boards such as interface, fan IPDU, and compressor IPDU.

EXPLODED DIAGRAM;PARTS LIST

Toshiba MMY-MAP1004HT7P Specifications

General IconGeneral
BrandToshiba
ModelMMY-MAP1004HT7P
CategoryAir Conditioner
LanguageEnglish

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