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MMY-MAP0724HT6UL
Toshiba MMY-MAP0724HT6UL User Manual
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AIR CONDITIONER (MULTI TYPE)
SERVICE MANUAL
FILE No. A11-019
Outdoor Unit
<SUPER MODULAR MULTI SYSTEM-i>
Model name:
<Heat Pump Model>
MMY-MAP0724HT6UL
MMY-MAP0964HT6UL
MMY-MAP1144HT6UL
PRINTED IN JAPAN, Feb,
2012, TDOC
2
Table of Contents
Default Chapter
1
Default Chapter
1
Service Manual
1
Table of Contents
2
Generic Denomination: Air Conditioner
5
Warning Indications on the Air Conditioner Unit
6
Precautions for Safety
7
Carrying in the Outdoor Unit
12
Adding Refrigerant
14
New Refrigerant (R410A)
15
1 Specifications
17
2 Wiring Diagrams
19
Outdoor Unit
19
3 Parts Rating
21
Outdoor Unit
21
Outdoor Inverter
22
Parts Layout in Outdoor Unit
23
Parts Layout in Inverter Assembly
25
Outdoor (Inverter) Print Circuit Board
27
Interface P.C. Board (MCC-1606)
27
Inverter P.C. Board for Compressor (MCC-1595) A3-IPDU
28
Inverter P.C. Board for Fan (MCC-1610)
29
4 Refrigerant Piping Systematic Drawing
31
5 Combined Refrigerant Piping System Schematic Diagrams
34
Normal Operation (COOL Mode / DEFROST Mode) - High Outside Air Temperature
34
(20 °C) or Above)
34
Normal Operation (COOL Mode) - Low Outside Air Temperature (Roughly below 68 °F (20 °C))
35
Normal Operation (HEAT Mode)
36
Emergency Operation (Cooling Operation under Header Outdoor Unit Backup Scenario)
37
Emergency Operation (Heating Operation under Header Outdoor Unit Backup Scenario)
38
Refrigerant Recovery from Failed Outdoor Unit
39
Backup Scenario)
39
6 Control Outline
40
7 Applied Control and Functions
49
Applied Control for Outdoor Unit
49
Outdoor Fan High Static Pressure Shift
49
Priority Operation Mode Setting
49
Applied Control of Outdoor Unit
51
Power Peak-Cut Control (Standard)
52
Power Peak-Cut Control (Extended)
53
External Master ON/OFF Control
54
Snowfall Fan Control
54
Night Operation (Sound Reduction) Control
55
Operation Mode Selection Control
56
Error/Operation Output
57
Compressor Operation Output
58
Operating Rate Output
59
8 Test Operation
60
Procedure and Summary of Test Operation
60
Check Items before Test Operation (before Powering-On)
61
Check at Main Power-On
65
Address Setup
66
Precautions
66
Address Setup and Check Procedure
66
Address Setup Procedure
67
Check after Address Setup When Central Control System Is Connected
80
Troubleshooting in Test Operation
81
A Check Code Is Displayed on the Remote Control
81
Operation from the Indoor Remote Control Is Not Accepted, and a Check Code Is Displayed on the 7-Segment Display of the Interface PC Board of the Header Unit
82
Remote Control
82
There Is no Display of a Check Code on the 7-Segment Display on the Interface PC Board of
82
In Checking the Number of Connected Outdoor Units and Connected Indoor Units after Ad
83
Units that Do Not Operate in a Test Operation.)
83
Test Operation Check
85
Fan Check
85
Cooling/Heating Test Operation Check
86
Wired Remote Control
86
Service Support Function
90
Check Function for Connecting of Refrigerant and Control Lines
90
Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit
92
Operation Procedure
93
Error Clearing Function
97
Remote Control Distinction Function
99
Pulse Motor Valve (PMV) Forced Open Fully/Close Fully Function in Outdoor Unit
100
Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit
100
Solenoid Valve Forced Open/Close Function in Outdoor Unit
101
Fan Operation Check in Outdoor Unit
102
Abnormal Outdoor Unit Discrimination Method by Fan Operating Function
103
Manual Adjustment Function of Outside Temperature (TO) Sensor
104
Monitor Function of Remote Control Switch
106
9 Troubleshooting
108
Overview
108
Troubleshooting Method
109
Troubleshooting Based on Information Displayed on Remote Control
115
Check Codes Displayed on Remote Control and SMMS-I Outdoor Unit
119
Board) and Locations to be Checked
119
Errors Detected by Tcc-Link Central Control Device
131
Diagnosis Procedure for each Check Code
133
7-Segment Display Function
164
Oil Level Judgment Display
170
Leakage/Clogging of Refrigerating Cycle Circuit
171
Sensor Characteristics
175
Pressure Sensor Output Check
178
10 Backup Operation (Emergency Operation)
180
Note for Backup Operation
180
Compressor Backup Operation Setting
181
Outdoor Unit Backup Operation Setting
182
Follower Outdoor Unit Backup Operation Setting (Failure of Follower Outdoor Unit)
182
Header Outdoor Unit Backup Operation Setting (Failure of Header Outdoor Unit)
184
Cooling-Season Outdoor Unit Backup Operation Setting
186
11 Outdoor Unit Refrigerant Recovery Method
187
Refrigerant Recovery from Failed Outdoor Unit (Pump-Down)
187
Note for Refrigerant Recovery Operation
187
Refrigerant Recovery Procedure a (Case of no Outdoor Unit Backup Operation Setting)
187
Refrigerant Recovery Procedure B (Case of Outdoor Unit Backup Operation Setting)
190
How to Operate System While Failed Outdoor Unit Being Repaired
192
Work Procedure after Repair
193
12 Replacing Compressors
194
Compressor Replacement Procedure (Outline)
194
Replacement of Compressors
195
Check Procedure to Search Cause of Compressor Oil Shortage
199
13 Outdoor Unit Parts Replacement Methods
202
14 C. Board Exchange Procedures
221
Replacement of Outdoor P.C.board
221
List of Service P.C. Boards
221
Configuration of Inverter Assembly
221
Interface Board Replacement Procedure
222
Inverter P.C. Board for Compressor Replacement Procedure
223
Fan IPDU P.C. Board (MCC-1610) Replacement Procedure
225
Noise Filter P.C. Board (MCC-1625 A, B, C) Replacement Procedure
226
15 Exploded Diagram / Parts Price List
229
5
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Toshiba MMY-MAP0724HT6UL Specifications
General
Brand
Toshiba
Model
MMY-MAP0724HT6UL
Category
Air Conditioner
Language
English
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