Toshiba MMY-MAP1604T8P-T - User Manual

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.

Summary

SAFETY CAUTION

New Refrigerant (R410 A)

Information on the adoption of HFC type refrigerant R410A for ozone layer protection.

1 Wiring Diagrams

1-1. Outdoor Unit

Wiring diagrams for the outdoor unit.

1-2. Indoor Unit

Wiring diagrams for various types of indoor units.

1-2-1. 4-way Cassette Type

Wiring diagram for the 4-way cassette type indoor unit.

1-2-2. Compact 4-way Cassette Type

Wiring diagram for the compact 4-way cassette type indoor unit.

1-2-3. 1-way Cassette Type (Compact type)

Wiring diagram for the 1-way cassette type indoor unit (compact).

1-2-4. 1-way Cassette Type SH series

Wiring diagram for the 1-way cassette type SH series indoor unit.

1-2-5. 2-way Cassette Type 2 series

Wiring diagram for the 2-way cassette type 2 series indoor unit.

1-2-6. Concealed Duct Standard Type

Wiring diagram for the concealed duct standard type indoor unit.

1-2-7. Concealed Duct Standard Type 6 series

Wiring diagram for the concealed duct standard type 6 series indoor unit.

1-2-8. Concealed Duct High Static Pressure Type

Wiring diagram for the concealed duct high static pressure type indoor unit.

1-2-9. Slim Duct Type

Wiring diagram for the slim duct type indoor unit.

1-2-10. Slim Duct Type (AP024, AP027)

Wiring diagram for the slim duct type indoor unit (AP024, AP027).

1-2-11. Ceiling Type

Wiring diagram for the ceiling type indoor unit.

1-2-12. High Wall Type 4 MH series

Wiring diagram for the high wall type 4MH series indoor unit.

1-2-13. High Wall Type 3 series

Wiring diagram for the high wall type 3 series indoor unit.

1-2-14. Floor Standing Cabinet Type

Wiring diagram for the floor standing cabinet type indoor unit.

1-2-15. Floor Standing Concealed Type

Wiring diagram for the floor standing concealed type indoor unit.

1-2-16. Floor Standing Type

Wiring diagram for the floor standing type indoor unit.

1-2-17. Air to Air Heat Exchanger with DX Coil Unit

Wiring diagram for the air to air heat exchanger with DX coil unit.

1-2-18. Fresh Air Intake Indoor Unit

Wiring diagram for the fresh air intake indoor unit.

2 Parts Rating

2-1. Outdoor Unit (50 Hz model: MMY-MAP***4*T8*P*)

Parts rating for 50Hz outdoor units.

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

Parts rating for 60Hz outdoor units.

2-3. Outdoor Inverter (50 Hz model: MMY-MAP***4*T8*P*)

Parts rating for 50Hz outdoor inverter units.

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

Parts rating for 60Hz outdoor inverter units.

2-5. Parts Layout in Outdoor Unit

Exploded view showing the location of parts in the outdoor unit.

2-6. Parts Layout in Inverter Assembly

Exploded view showing the location of parts in the inverter assembly.

2-7. Outdoor (Inverter) Print Circuit Board

Identification of print circuit boards within the outdoor inverter unit.

2-7-1. Interface P.C. board (MCC-1606)

Details of the interface P.C. board.

2-7-2. Inverter P.C. board for compressor (MCC-1596) A3-IPDU

Details of the inverter P.C. board for the compressor.

2-7-3. Inverter P.C. board for fan (MCC-1610)

Details of the inverter P.C. board for the fan.

3 Refrigerant Piping Systematic Drawing

4 Combined Refrigerant Piping System Schematic Diagrams

4-1. Normal Operation (COOL Mode; DEFROST Mode) - High Outside Air Temperature (Roughly 20°C or Above)

Schematic diagram for normal operation in COOL/DEFROST mode at high outside temperatures.

4-2. Normal Operation (COOL Mode) - Low Outside Air Temperature (Roughly Below 20°C)

Schematic diagram for normal operation in COOL mode at low outside temperatures.

4-3. Normal Operation (HEAT Mode)

Schematic diagram for normal operation in HEAT mode.

4-4. Emergency Operation (Cooling Operation under Header Outdoor Unit Backup Scenario)

Schematic diagram for emergency cooling operation with backup from header unit.

4-5. Emergency Operation (Heating Operation under Header Outdoor Unit Backup Scenario)

Schematic diagram for emergency heating operation with backup from header unit.

4-6. Refrigerant Recovery from Failed Outdoor Unit (Pump-Down Operation under Follower Outdoor Unit Backup Scenario)

Schematic diagram for refrigerant recovery during pump-down with follower unit backup.

5 Control Outline

Indoor Unit Control Specifications

Specifications and control items for indoor units.

6 Applied Control and Functions (including Circuit Configuration)

6-1. Indoor Controller Block Diagram

Block diagram illustrating the indoor controller configuration.

6-1-1. When Wired (Simple) Remote Controller Connected

Block diagram for wired remote controller connection.

6-1-2. When Wireless Remote Controller Kit Connected

Block diagram for wireless remote controller kit connection.

6-1-3. When Both Main (Sub) Remote Controller and Wireless Remote Controller Kit Connected

Block diagram for connection with both wired and wireless controllers.

6-2. Indoor Printed Circuit Board

Layout and identification of components on the indoor P.C. board.

6-3. Optional Connector Specifications of Indoor P.C. Board

Specifications for optional connectors on the indoor P.C. board.

6-4. Test Operation of Indoor Unit

Procedure for testing the operation of the indoor unit.

6-5. Method to Set Indoor Unit Function DN Code

Procedure for setting indoor unit functions using DN codes.

7 TEST OPERATION

7-1. Procedure and Summary of Test Operation

Overview and steps for performing a test operation.

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

Pre-operation checks for installation and wiring.

7-3. Check at Main Power-on

Checks to perform after turning on the main power.

7-4. Address Setup

Procedures related to setting up system addresses.

7-4-1. Precautions

Precautions regarding address setup procedures.

7-4-2. Address Setup and Check Procedure

Steps for performing address setup and verification.

7-4-3. Address Setup Procedure

Detailed procedure for setting addresses.

7-4-4. Check after Address Setup when Central Control System Is Connected

Verification steps after address setup with a central control system.

7-5. Troubleshooting in Test Operation

Troubleshooting guide for issues encountered during test operations.

7-5-1. A Check Code is Displayed on the Remote Controller

Troubleshooting steps when a check code appears on the remote controller.

7-5-2. Operation from the indoor remote controller is not accepted, and a check code is displayed on the 7-segment display of the interface PC board of the header unit.

Troubleshooting for unresponsive remote controller and header unit display errors.

7-5-3. There is no display of a check code on the 7-segment display on the interface PC board of the header unit, although there is indoor unit that is not accepting operation from the indoor remote controller.

Troubleshooting for missing check codes with unresponsive indoor units.

7-5-4. In checking the number of connected outdoor units and connected indoor units after address setup, a lower number of connected units is displayed. (There are outdoor;indoor units that do not operate in a test operation.)

Troubleshooting for incorrect unit count display and non-operational units.

7-6. Test Operation Check

Checks to perform after completing test operations.

7-6-1. Fan Check

Procedure for checking the fan operation during test.

7-6-2. Single cooling;Single heating Test Operation Check

Procedure for single cooling/heating test operation.

7-7. Service Support Function

Functions for service support and diagnostics.

7-7-1. Check Function for Connecting of Refrigerant and Control Lines

Function to check refrigerant and control line connections.

7-7-2. Function to Start;Stop (ON;OFF) Indoor Unit from Outdoor Unit

Function to control indoor unit ON/OFF status from the outdoor unit.

7-7-3. Error Clearing Function

Procedures for clearing detected errors.

7-7-4. Remote Controller Distinction Function

Function to distinguish connected remote controllers.

7-7-5. Pulse Motor Valve (PMV) Forced Open;Close Function in Indoor Unit

Function to force open/close indoor PMV.

7-7-6. Pulse Motor Valve (PMV) Forced Open Fully;Close fully Function in Outdoor Unit

Function to force open/close outdoor PMV fully.

7-7-7. Solenoid Valve Forced Open;Close Function in Outdoor Unit

Function to force open/close outdoor solenoid valves.

7-7-8. Fan Operation Check in Outdoor Unit

Function to check outdoor fan operation.

7-7-9. Abnormal Outdoor Unit Discrimination Method By Fan Operating Function

Method to discriminate abnormal outdoor units using fan operation.

7-7-10. Manual Adjustment Function of Outside Temperature (TO) Sensor

Function to manually adjust the outside temperature sensor value.

7-7-11. Monitor Function of Remote Controller Switch

Function to monitor remote controller switch operations.

8 TROUBLESHOOTING

8-1. Overview

General overview of troubleshooting procedures and required tools.

8-2. Troubleshooting Method

Detailed method for troubleshooting faults using check codes.

8-3. Troubleshooting Based on Information Displayed on Remote Controller

Troubleshooting based on remote controller and indoor unit displays.

8-4. Check Codes Displayed on Remote Controller and SMMS-i Outdoor Unit (7-Segment Display on I;F Board) and Locations to Be Checked

Table of check codes, causes, and locations for diagnosis.

8-5. Diagnosis procedure for each check code

Diagnostic flowcharts for various check codes.

8-6. 7-Segment Display Function

Explanation of the 7-segment display function for checking status.

8-7. Oil Level Judgment Display

Display and interpretation of compressor oil level judgment results.

8-8. Leakage;Clogging of Refrigerating Cycle Circuit

Troubleshooting for refrigerant leaks and blockages in the cycle.

8-9. Sensor Characteristics

Resistance characteristics of various sensors at different temperatures.

8-10. Pressure Sensor Output Check

Output voltage characteristics of pressure sensors.

9 BACKUP OPERATION (EMERGENCY OPERATION)

9-1. Note for Backup Operation

Important notes regarding backup operation procedures and limitations.

9-2. Compressor Backup Operation Setting

Procedure for setting compressor backup operation.

9-3. Outdoor Unit Backup Operation Setting

Procedure for setting outdoor unit backup operation.

9-3-1. Follower outdoor unit backup operation setting (failure of follower outdoor unit)

Setting backup operation when a follower unit fails.

9-3-2. Header outdoor unit backup operation setting (failure of header outdoor unit)

Setting backup operation when a header unit fails.

9-4. Cooling-Season Outdoor Unit Backup Operation Setting

Setting backup operation specifically for the cooling season.

10 OUTDOOR UNIT REFRIGERANT RECOVERY METHOD

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

Method for recovering refrigerant from a failed outdoor unit via pump-down.

10-1-1. Note for refrigerant recovery operation

Important notes for performing refrigerant recovery.

10-1-2. Refrigerant recovery procedure A (Case of no outdoor unit backup operation setting)

Refrigerant recovery procedure when backup setting is not used.

10-1-3. Refrigerant recovery procedure B (Case of outdoor unit backup operation setting)

Refrigerant recovery procedure when backup setting is used.

10-2. How to Operate System While Failed Outdoor Unit Being Repaired

Procedure for operating the system while a failed outdoor unit is under repair.

10-3. Work procedure after Repair

Procedures to follow after completing repairs to the outdoor unit.

11 REPLACING COMPRESSORS

11-1. Compressor Replacement Procedure (Outline)

General outline for compressor replacement procedures.

11-2. Replacement of Compressors

Detailed procedures for replacing compressors.

11-3. Check Procedure to Search Cause of Compressor Oil Shortage

Procedure for investigating the cause of compressor oil shortage.

12 OUTDOOR UNIT PARTS REPLACEMENT METHODS

1 Cabinet

Procedure for detaching and attaching the outdoor unit cabinet.

13 P.C. BOARD EXCHANGE PROCEDURES

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

Procedures for replacing indoor P.C. boards.

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

Procedures for replacing outdoor P.C. boards.

13-2-1. List of service P.C. boards

List of available service P.C. boards.

13-2-2. Configuration of inverter assembly

Diagram showing the configuration of the inverter assembly.

13-2-3. Interface board (MCC-1606) replacement method

Method for replacing the interface board.

13-2-4. Comp-IPDU P.C. Board (MCC-1596) Replacement Procedure

Procedure for replacing the Compressor IPDU P.C. board.

13-2-5. Fan IPDU P.C. Board (MCC-1610) Replacement Procedure

Procedure for replacing the Fan IPDU P.C. board.

13-2-6. Noise Filter P.C. Board (MCC-1608 A, B) Replacement Procedure

Procedure for replacing the noise filter P.C. board.

14 EXPLODED DIAGRAM;PARTS LIST

Toshiba MMY-MAP1604T8P-T Specifications