Toshiba MMY-MAP1204HT7 Series User Manual

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

Toshiba MMY-MAP1204HT7 Series Specifications

General

Brand	Toshiba
Model	MMY-MAP1204HT7 Series
Category	Air Conditioner
Language	English

Summary

SERVICE MANUAL

AIR CONDITIONER (MULTI TYPE)

Specifies the type of service manual for multi-type air conditioners.

Outdoor Unit

<SUPER MODULAR MULTI SYSTEM-i>

Identifies the SMMS-i system for outdoor units.

<Heat Pump Model>

Lists outdoor units for heat pump models.

<Cooling Only Model>

Lists outdoor units for cooling only models.

1 Wiring Diagrams

1-1. Outdoor Unit

Wiring diagrams for specific outdoor unit models.

1-2. Indoor Unit

Wiring diagrams for various indoor unit types.

2 Parts Rating

2-1. Outdoor Unit (50Hz model: MMY-MAP***4HT8-E, MAP***4HT8-TR, MAP***4HT8, MAP4T8-SG)

Parts rating for 50Hz outdoor units.

2-2. Outdoor Unit (60Hz model: MMY-MAP***4HT7)

Parts rating for 60Hz outdoor units.

2-5. Indoor Unit

Parts rating for various indoor units.

5 Control Outline

6 Applied Control and Functions (including Circuit Configuration)

6-1. Indoor Controller Block Diagram

Block diagram illustrating the indoor unit controller.

6-7. Applied control for Outdoor Unit

Applied controls for outdoor units.

6-8. Applied Control of Outdoor Unit.

Specific applied controls for outdoor units.

7 TEST OPERATION

7-1. Procedure and Summary of Test Operation

Outlines the procedure and summary for test operations.

8 TROUBLESHOOTING

8-1. Overview

Introduces troubleshooting, required tools, and preliminary checks.

8-2. Troubleshooting Method

Details troubleshooting methods based on check codes.

9 BACKUP OPERATION (EMERGENCY OPERATION)

9-1. Note for Backup Operation

Provides essential notes for backup operation.

10 OUTDOOR UNIT REFRIGERANT RECOVERY METHOD

10-1. Refrigerant Recovery from Failed Outdoor Unit (Pump-Down)

Details the pump-down procedure for refrigerant recovery from a failed unit.

11 REPLACING COMPRESSORS

11-1. Compressor Replacement Procedure (Outline)

Provides an outline for the compressor replacement procedure.

13 P.C. BOARD EXCHANGE PROCEDURES

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

Instructions for replacing indoor P.C. boards.

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

Instructions for replacing outdoor P.C. boards.

14 EXPLODED DIAGRAM/PARTS PRICE LIST

Specifications

Details technical specifications like sound power level and weight.

Carrying in the Outdoor Unit

Instructions on how to handle and carry the outdoor unit.

Weight centre and weight

Information on the weight center and weight of outdoor units.

Selection of Pipe Size

Guidelines for selecting pipe sizes based on specifications.

Screw size and tightening torque

Specifies screw sizes and tightening torques for assembly.

Adding refrigerant

Calculation and procedure for adding refrigerant.

New Refrigerant (R410A)

Safety cautions and guidelines for using R410A refrigerant.

Tools

Lists required and general tools for R410A systems.