EasyManua.ls Logo

Toshiba MMY-MAP1004HT7 Series - User Manual

Toshiba MMY-MAP1004HT7 Series
370 pages
Save Page as PDF
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
AIR CONDITIONER (MULTI TYPE)
SERVICE MANUAL
FILE No. A10-005
This service manual provides relevant explanations about new outdoor unit (SMMS-i). Please refer to
the following service manuals for each indoor units.
Outdoor Unit
<SUPER MODULAR MULTI SYSTEM-i>
Model name:
<Heat Pump Model>
<Cooling Only Model>
4-way Air Discharge Cassette Type
(MMU-AP 2H)
A08-004
Compact 4-way Cassette (600 × 600) Type
(MMU-AP 1MH)
A06-002
1-way Air Discharge Cassette Type SH (2 series)
(MMU-AP 2SH)
A05-007
2-way Air Discharge Cassette Type (2 series)
(MMU-AP 2WH)
A10-007
Slim Duct Type
(MMD-AP 1SPH)
A05-007
Fresh Air Intake Indoor Unit Type
(MMD-AP 1HFE)
A06-016
High-wall Type (2 series)
(MMK-AP 2H)
A05-005
High-wall Type (3 series)
(MMK-AP 3H)
SVM-09059
Other indoor units SMMS (1 series) A03-009, A03-010
MMY-MAP0804HT8(Z)(ZG)-E
MMY-MAP1004HT8(Z)(ZG)-E
MMY-MAP1204HT8(Z)(ZG)-E
MMY-MAP1404HT8(Z)(ZG)-E
MMY-MAP1604HT8(Z)(ZG)-E
MMY-MAP0804HT8(Z)(ZG)-TR
MMY-MAP1004HT8(Z)(ZG)-TR
MMY-MAP1204HT8(Z)(ZG)-TR
MMY-MAP1404HT8(Z)(ZG)-TR
MMY-MAP1604HT8(Z)(ZG)-TR
MMY-MAP0804HT8(Z)(ZG)
MMY-MAP1004HT8(Z)(ZG)
MMY-MAP1204HT8(Z)(ZG)
MMY-MAP1404HT8(Z)(ZG)
MMY-MAP1604HT8(Z)(ZG)
MMY-MAP0804HT7(Z)(ZG)
MMY-MAP1004HT7(Z)(ZG)
MMY-MAP1204HT7(Z)(ZG)
MMY-MAP1404HT7(Z)(ZG)
MMY-MAP1604HT7(Z)(ZG)
MMY-MAP0804T8(Z)(ZG)-E
MMY-MAP1004T8(Z)(ZG)-E
MMY-MAP1204T8(Z)(ZG)-E
MMY-MAP1404T8(Z)(ZG)-E
MMY-MAP1604T8(Z)(ZG)-E
MMY-MAP0804T8(Z)(ZG)
MMY-MAP1004T8(Z)(ZG)
MMY-MAP1204T8(Z)(ZG)
MMY-MAP1404T8(Z)(ZG)
MMY-MAP1604T8(Z)(ZG)
MMY-MAP0804T8-SG
MMY-MAP1004T8-SG
MMY-MAP1204T8-SG
MMY-MAP1404T8-SG
MMY-MAP1604T8-SG

Table of Contents

Questions and Answers

  • J
    Jennifer DoyleNov 7, 2025
    What to do if my Toshiba Air Conditioner isn't responding to the remote but there's no check code?
    • T
      Tanya WangNov 7, 2025
      If your Toshiba Air Conditioner unit isn't responding to the indoor remote controller, but there's no check code on the header unit's interface PC board, consider these possibilities: * The communication line between the indoor and outdoor units might not be connected. Modify the wiring. * The line address and indoor address may not be set. Set up the address. * If in indoor group control, the power of the header unit of the group might not be turned on. Turn on the power. * A group address might be set to the follower unit for individual control. Set the group address to “0” in the case of individual control. * The power might not be turned on. Turn on the power. * The indoor remote controller might not be connected with a wire. Modify the wiring. * There might be miswiring...
  • J
    Jonathan BrowningNov 17, 2025
    Why does my Toshiba Air Conditioner show fewer connected units than expected after address setup?
    • A
      avilahannahNov 17, 2025
      If, after setting up the addresses on your Toshiba Air Conditioner, the number of connected outdoor or indoor units displayed is lower than expected, it could be due to: * Miswiring or an unconnected wire in the communication lines between outdoor units. After modifying the wiring, set up the addresses again and check the number of connected outdoor units. * Miswiring or an unconnected wire in the communication lines between indoor units. After modifying the wiring, set up the addresses again and check the number of connected indoor units. * The indoor remote controller is not connected with wire or there is miswiring of the indoor remote controller. Use the main indoor remote controller connected to a group, start a test operation, specify the unit that is not operating (the unit n...
  • C
    Christopher HillNov 26, 2025
    Why does my Toshiba MMY-MAP1004HT7 Air Conditioner remote controller display a check code?
    • Q
      qsmithNov 26, 2025
      If a check code is displayed on your Toshiba Air Conditioner's remote controller, it could be due to several reasons: * The outdoor power might be off, so ensure the header outdoor unit power is on. * There might be an address setup error. In this case, set up the address again. * There could be no outdoor terminal resistance, or there might be two or more resistances. Check SW30 bit 2 of the header unit. If there is no connection between multiple refrigerant lines, SW30 bit 2 is on. If there is a connection between multiple refrigerant lines, SW30 bit 2 of the connected header unit is turned on only for one line. * It's possible there's a transmission circuit error at the interface side, which would require replacing the interface PC board. * Communication from all the indoor u...

Summary

SERVICE MANUAL

Outdoor Unit

Details about the SMMS-i Super Modular Multi System Outdoor Unit, including model names.

Wiring Diagrams

Outdoor Unit

Wiring diagrams for outdoor units, covering various models and specifications.

Indoor Unit

Wiring diagrams for various indoor unit types, including cassette, duct, and wall units.

Control Outline

Indoor Controller Block Diagram

Block diagram illustrating the indoor controller, showing connections for remote controllers and network adaptors.

Applied Control and Functions (including Circuit Configuration)

Details applied control functions for indoor and outdoor units, covering various operation modes.

Troubleshooting

Overview

General overview of troubleshooting procedures, required tools, and initial checks.

Troubleshooting Based on Information Displayed on Remote Controller

Guidance for troubleshooting based on fault codes displayed on the remote controller.

REPLACING COMPRESSORS

Compressor Replacement Procedure (Outline)

General outline for the compressor replacement procedure, including safety warnings.

Definition of Qualified Installer or Qualified Service Person

Agent Qualifications and knowledge which the agent must have

Details the qualifications and knowledge required for qualified installers and service persons.

Warning Indications on the Air Conditioner Unit

Warning indication Description

Describes various warning indications on the unit and their meanings for safety.

Precautions for Safety

DANGER

Highlights critical dangers like electric shock and necessary safety precautions.

Specifications

Model Sound power level (dBA) Weight (kg) Cooling Heating

Technical specifications including sound power levels and weight for various models.

New Refrigerant (R410 A)

Safety Caution Concerned to New Refrigerant

Safety precautions for R410A refrigerant, highlighting high pressure and oil compatibility.

Tools

Required Tools for R410 A

Lists essential tools specifically required for R410A refrigerant systems.

Indoor Unit

4-way Air Discharge Cassette Type

Wiring diagrams for 4-way air discharge cassette indoor units of various models.

Parts Rating

Outdoor Unit (50 Hz model: MMY-MAP***4 HT8-E, MAP4 HT8-TR, MAP4 HT8, MAP4 T8-SG)

Lists parts ratings for 50Hz outdoor units, including compressors and valves.

Outdoor Inverter (50 Hz model: MMY-MAP***4 HT8-E, MAP4 HT8-TR, MAP4 HT8, MAP4 T8-SG)

Parts Rating (continued)

Lists parts ratings for 50Hz outdoor inverter units, including P.C. boards and sensors.

Parts Layout in Outdoor Unit

8, 10, 12 HP Model: MMY-MAP0804, MAP1004, MAP1204

Exploded view showing parts layout for 8, 10, and 12HP outdoor units.

Outdoor (Inverter) Print Circuit Board

Interface P.C. board (MCC-1606)

Detailed layout of the interface P.C. board (MCC-1606) for outdoor units.

Refrigerant Piping Systematic Drawing

Outdoor Unit (8, 10, 12 HP) Model: MMY-MAP0804, MMY-MAP1004, MMY-MAP1204

Refrigerant piping diagram for 8, 10, and 12HP outdoor units.

Explanation of Functional Parts

Solenoid valve

Explains the function of various solenoid valves (SV2, SV3A-SV3F, SV41-SV43, SV5, SV6).

Control Outline

Indoor Unit

Outlines control specifications for indoor units, including identification and operation selection.

TEST OPERATION

Procedure and Summary of Test Operation

Outlines the procedure for executing a test operation and checking results.

Address Setup

Precautions

Precautions to be taken before performing address setup.

Troubleshooting in Test Operation

A Check Code Is Displayed on the Remote Controller

Lists causes and countermeasures for check codes displayed on the remote controller.

Test Operation Check

Fan Check

Procedure to check the fan operation and sound of the outdoor unit.

Service Support Function

Check Function for Connecting of Refrigerant and Control Lines

Function to check misconnection of refrigerant pipes and control lines between units.

Applied Control of Outdoor Unit

Outdoor Unit Interface P.C. Board

Layout of the outdoor unit interface P.C. board, including DIP switches.

TROUBLESHOOTING

Overview

General overview of troubleshooting, required tools, and initial checks.

Troubleshooting Method

List of Check Codes (Indoor Unit)

Lists check codes detected by indoor units and their fault sites/descriptions.

Check Codes Displayed on Remote Controller and SMMS-i Outdoor Unit (7-Segment Display on I;F Board) and Locations to Be Checked

Check code Location of detection Description System status Error detection condition(s) Main Check items (locations)

Details check codes on remote controller and outdoor I/F board, with locations for checks.

REPLACING COMPRESSORS

Compressor Replacement Procedure (Outline)

Outline of the compressor replacement procedure, including safety warnings.

Check Procedure to Search Cause of Compressor Oil Shortage

Are the balance pipes of all outdoor units connected to the same refrigerant line fully open?

Checks balance pipe valve status for oil shortage issues.

BACKUP OPERATION (EMERGENCY OPERATION)

Note for Backup Operation

Important notes regarding backup operation for compressors and outdoor units.

Outdoor Unit Backup Operation Setting

Follower outdoor unit backup operation setting (failure of follower outdoor unit)

Procedure for backup operation when a follower outdoor unit fails.

Outdoor Unit Refrigerant Recovery Method

Refrigerant Recovery from Failed Outdoor Unit (Pump-Down)

Notes and procedures for refrigerant recovery from a failed outdoor unit using pump-down.

P.C. BOARD EXCHANGE PROCEDURES

Indoor Unit

Lists P.C. boards for indoor units and their applicable models.

Procedure 1: Reading Setting Data from EEPROM

Procedure 2: Replacing P.C. Board

Single (stand-alone) operation

Procedure for single unit operation after P.C. board replacement.

Procedure 3: Writing Setting Data in EEPROM

EXPLODED DIAGRAM;PARTS PRICE LIST

SMMS-i OUTDOOR UNIT MMY-MAP0804 HT8(Z)(ZG)-E, MMY-MAP1004 HT8(Z)(ZG)-E, MMY-MAP1204 HT8(Z)(ZG)-E

Exploded diagram of SMMS-i outdoor units with part numbers for MMY-MAP0804, 1004, 1204 -E models.

REFRIGERATION CIRCUIT DIAGRAM

MMY-MAP0804, MMY-MAP1004, MMY-MAP1204

Refrigeration circuit diagram for MMY-MAP0804, 1004, and 1204 outdoor units.

SMMS-i INV SERVICE PARTS LIST

MMY-MAP0804 HT8(Z)(ZG), MMY-MAP1004 HT8(Z)(ZG), MMY-MAP1204 HT8(Z)(ZG)

Service parts list for SMMS-i INV outdoor units (MMY-MAP0804, 1004, 1204 -ZG models).

WARNINGS ON REFRIGERANT LEAKAGE

Check of Concentration Limit

Information on concentration limits of R410A refrigerant and necessary measures in rooms.

Toshiba MMY-MAP1004HT7 Series Specifications

General IconGeneral
BrandToshiba
ModelMMY-MAP1004HT7 Series
CategoryAir Conditioner
LanguageEnglish

Related product manuals