Toshiba MMY-MUP2401HT8P-A User Manual

7-4. Address Setup
This product requires address setup before operation.
Follow this procedure for address setup.
7-4-1. Precautions
(1) Address setup is not performed simply by turning on the power supply.
(2) For indoor units, address setup can be done either by manual address setup or by automatic address setup:
Automatic address setup: Setup from SW06 on the interface P.C. board of the header unit Manual address
setup: Setup from the wired remote controller. (For details, refer to “7-4-3. Address Setup Procedure.”)
(3) Automatic setup usually takes about 5 minutes per line. In some cases, however, it may take up to 10 minutes.
(4) It is unnecessary to operate the air conditioner to achieve address setup.
7-4-2. Address Setup and Check Procedure
Interface P.C. board
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SW04
SW01
Rotary switches
7-segment
display [B]
Push switch
7-segment
display [A]
SW02 SW03
SW05 SW06
Procedure Item Operation and check contents
1
Header outdoor unit
setting
Turn off DIP switch 1 of SW101 on the header outdoor unit interface P.C.boards.
And, turn on DIP switch 2 of SW100.
2 Indoor unit power-on Turn on the power of the indoor unit for the refrigerant line for which the address is to be set up.
3 Outdoor unit power-on Turn on the power of all the outdoor units for the refrigerant line for which the address is to be set up.
4
7-segment display
check
Check that “L08” is displayed on the 7-segment display [B] on the interface PC board of the header
unit in the system where the address is to be set up.
5 Address setup start Confirm the items in “7-4-3. Address Setup Procedure,” and then set up the address according to the
operation procedure.
(Be careful to note that the setup operation may differ in group control and central control systems.)
Note:
The address cannot be set up if switches are not operated.
6
Display check after
setup
• After address setup, “U1” “ ” is displayed on the 7-segment display.
• For follower outdoor units, “U2” to “U5” are displayed on the 7-segment display [A].
• If a check code is displayed on the 7-segment display [B], remove the cause of the problem
referring to “8 TROUBLESHOOTING.”
7
Communication setting
start
Confirm the items in “7-4-3. Address Setup Procedure,” and then set up the
communication according to the operation procedure.
Note:
The address cannot be set up if switches are not operated.
8
Display check after
communication setup
• After communication setup, “c.c.” “Fin” is displayed on the 7-segment display.
• If a unit that has already been set for communication is connected, it cannot be set correctly.
In this case, clear the communication settings and set again.
9
System information
check after setup
Using the 7-segment display function, check the system information of the scheduled system.
(This check is executed on the interface PC board of the header unit.)
Rotary switch setup 7-segment display
SW01 SW02 SW03 [A] [B]
1System capacity 2 3 [Number of
horsepower]
[H P]
1Number of connected
outdoor units
3 3 [Number of units] [ P]
2Communication
Type
16 2
[Type]
Type : 0=TCC-Link, 1=TU2C-Link
1Number of connected
indoor units
4 3 [Number of
connected units]
After the above checks, return rotary switches SW01, SW02, and SW03 to 1/1/1.
- 117 -

Toshiba MMY-MUP2401HT8P-A Specifications

General

Brand	Toshiba
Model	MMY-MUP2401HT8P-A
Category	Air Conditioner
Language	English

Summary

SERVICE MANUAL

SAFETY CAUTION

REFRIGERANT (R410A)

1. WIRING DIAGRAMS

2. PARTS RATING

2-1. Outdoor Unit (50Hz model: MMY-MUP***1HT8(J)P)

Lists parts and ratings for 50Hz outdoor units.

2-5. Inverter Assembly

Details components within the inverter assembly.

2-6. Parts Layout in Outdoor Unit

Visual representation of parts placement in outdoor units.

2-7. Parts Layout in Inverter Assembly

Visual representation of parts within the inverter assembly.

2-8. Outdoor (Inverter) Print Circuit Board

Explains the layout of the outdoor inverter circuit board.

3. REFRIGERANT PIPING SCHEMATIC DRAWING

4. COMBINED REFRIGERANT PIPING SYSTEM SCHEMATIC DIAGRAMS

4-1. Refrigerant Flow (Cooling)

Illustrates the refrigerant flow during cooling operation.

4-2. Refrigerant Flow (Single Defrost)

Illustrates the refrigerant flow during single defrost operation.

4-3. Refrigerant Flow (Heating)

Illustrates the refrigerant flow during heating operation.

4-4. Refrigerant Flow (Individual Defrost)

Illustrates refrigerant flow for individual defrost operations.

4-5-1. (1) Refrigerant Flow (Automatic emergency cooling)

Shows refrigerant flow during automatic emergency cooling.

4-5-2. (1) Refrigerant Flow (Automatic emergency heating)

Shows refrigerant flow during automatic emergency heating.

4-6. Refrigerant Flow (Reclaim)

Illustrates refrigerant flow during the reclaim process.

5. CONTROL OUTLINE

5-1. Outdoor Unit

Details the control functions of the outdoor unit.

6. APPLIED CONTROL AND FUNCTIONS

6-1. Optional connector Specifications of Indoor P.C.Board

Lists specifications for optional indoor P.C. board connectors.

6-2. Test Operation of Indoor Unit

Describes how to perform test operations for indoor units.

6-3. Method to Set Indoor Unit Function DN Code

Explains how to set indoor unit function codes via remote controller.

6-4. Method to set Outdoor Unit Function Code No. (O.DN )

Guides setting outdoor unit function codes using switches or remote controller.

6-5. Applied Control of Indoor Unit

Details control systems using remote location ON/OFF boxes.

6-6. Applied Control of Outdoor Unit

Explains applied controls for outdoor units based on settings.

6-7. Notice Code

Explains how notice codes are displayed and managed.

6-8. System Cooperation Defrosting

Describes how systems cooperate to manage defrosting timing.

6-9. Night operation (Sound reduction control)

Details how to set night operation for reduced sound levels.

7. TEST OPERATION

7-1. Procedure and Summary of Test Operation

Provides an overview and steps for test operations.

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

Lists essential checks before starting test operations.

7-3. Check at Main Power-on

Steps to check the system after main power is turned on.

7-4. Address Setup

Procedures for setting system addresses.

7-5. Troubleshooting in Test Operation

Addresses issues encountered during test operations.

7-6. Test Operation Check

Procedures to check system operation after test run.

7-7. Service Support Function

Provides functions for service support and troubleshooting.

7-8. Wave Tool Advance for SMMS-u Series

Information on using the Wave Tool Advance application.

8. TROUBLESHOOTING

8-1. Overview

Provides an overview of troubleshooting procedures and tools.

8-2. Troubleshooting method

Explains how to use check codes for troubleshooting.

8-3. Troubleshooting based on information displayed on remote controller

Troubleshooting based on remote controller displays and history.

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

Lists check codes and locations for troubleshooting.

8-5. Diagnosis procedure for each check code

Flowcharts for diagnosing specific check codes.

8-6. 7-Segment Display Function

Explains the function and usage of the 7-segment display.

8-7. Oil Level Judgment Display

How to check compressor oil levels using the display.

8-8. SMMS-u Outdoor Interface P.C. Board Function Setting Change Table

Table detailing DIP switch and function settings.

8-9. Leakage/Clogging of Refrigerating Cycle Circuit

Identifies check codes related to refrigerant or oil circuit issues.

9. BACKUP OPERATION (EMERGENCY OPERATION)

9-1. Note for Backup Operation

Important notes and considerations for backup operations.

9-2. Compressor Backup Operation Setting

Procedure for setting compressor backup operation.

9-3. Outdoor Unit Backup Operation Setting

Procedures for setting outdoor unit backup operation.

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

Specific backup operation settings for cooling season.

9-5. Outdoor Unit Automatic Backup Operation Outline

Overview of the automatic backup operation function.

10. OUTDOOR UNIT REFRIGERANT RECOVERY METHOD

10-1. Refrigerant Recovery from Troubled Outdoor Unit (Reclaim)

Methods for reclaiming refrigerant from faulty outdoor units.

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

Guides system operation while a unit is under repair.

10-3. Work procedure after Repair

Steps to follow after completing repairs, including vacuuming.

11. REPLACING COMPRESSORS

11-1. Compressor Replacement Procedure (Outline)

Outlines the general steps for compressor replacement.

11-2. Replacement of Compressors

Detailed steps for replacing compressors and adjusting oil.

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

Diagnosing causes of compressor oil shortage.

12. OUTDOOR UNIT PARTS REPLACEMENT METHODS

13. P.C. BOARD REPLACEMENT PROCEDURES

13-1. Replacement of outdoor P.C. board & Inverter Parts

Lists service parts for outdoor PC boards and inverters.

14. EXPLODED DIAGRAM/PARTS LIST

14-1. Outdoor unit (8, 10, 12, 14HP)

Exploded diagram and parts list for 8-14HP outdoor units.

14-2. Outdoor unit (14A, 16, 18, 20HP)

Exploded diagram and parts list for 14A-20HP outdoor units.

14-3. Outdoor unit (22, 24HP)

Exploded diagram and parts list for 22-24HP outdoor units.