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3-5. Parts Layout in Outdoor Unit

Outdoor Unit (6 ton)

Model: MMY-MAP0726FT*

−30 −

TD1 sensor

TD2 sensor

SV41 valve

SV42 valve

Check joint

(Liguid pipe)

Compressor 1

Compressor 2

TE1 sensor

Low pressure

sensor

PMV 1

Check joint

(Low pressure)

4-way valve

High pressure

sensor

Check joint

(High pressure)

High pressure

SW2

TL1 sensor

TO sensor

High pressure

SW1

PMV 3

PMV 4

TE2 sensor

Fusible plug

TK5 sensor

SV2 valve

SV3A valve

SV3B valve

Liquid tank

TK1 sensor

TK2 sensor

Fusible plug

SV14 valve

SV3C valve

Oil separator

SV6 valve

SV11 valve

SV5 valve

Back side

from the rear

SV3E valve

Front side

from the rear

SV3D valve

SV15 valve

TK4 sensor

TS1 sensor

TS2 sensor

Accumulator

Table of Contents2
Precautions for Safety6
Refrigerant (R410A)13
Specifications15
Wiring Diagrams19
Outdoor Unit19
Single Port FS Unit20
Multi Port FS Unit22
Single Port FS Unit (Long Piping Model)25
Parts Rating28
Outdoor Unit (208/230V Model: MMY-MAP0726FT2P-UL)28
Outdoor Inverter (208/230V Model: MMY-MAP0726FT2P-UL)29
Multi Port FS Unit (RBM-Y0611F4PUL, RBM-Y0611F6PUL)30
Single Port FS Unit (Long Piping Model) (RBM-Y0384FUL, RBM-Y0614FUL, RBM-Y0964FUL)30
Parts Layout in Outdoor Unit31
Parts Layout in Inverter Assembly32
Outdoor (Inverter) Print Circuit Board33
Interface P.C. Board (MCC-1673)33
Inverter P.C. Board for Compressor (MCC-1683) A3-IPDU34
Inverter P.C. Board for Fan Motor (MCC-1610) FAN-IPDU35
Noise Filer PC Board (MCC-1682 -A, -B,)36
Refrigerant Piping Systematic Drawing37
Combined Refrigerant Piping System Schematic Diagrams42
All Cooling Mode (Operation of Cooling Only) When Outside Temperature Is High42
(Standard: 90°F or Higher)42
All Cooling Mode (Operation of Cooling Only) When Outside Temperature Is43
(Standard: 50゜F ~ 90゜F) / Defrost Mode43
All Cooling Mode (Operation of Cooling Only) When Outside Temperature Is Low44
(Standard: 50°F or Lower)44
All Heating Mode (Operation of Heating Only)45
Mainly Cooling Mode46
(Operating Cooling Function Mainly, Collective Operation of Cooling and Heating Operation)46
Mainly Heating Mode47
(Operating Heating Function Mainly, Collective Operation of Cooling and Heating Operation)47
Emergency Operation (All Cooling Operation at Backup of the Header Unit)48
Emergency Operation (All Heating Operation at Backup of the Header Unit)49
Refrigerant Recovery (During Pump-Down Operation) of the Troubled Outdoor Unit) (in Case of Trouble of Follower Unit)50
Control Outline51
Indoor Unit51
Outdoor Unit57
Applied Control for Outdoor Unit66
Outdoor Fan High Static Pressure Shift66
Priority Operation Mode Setting67
Applied Control of Outdoor Unit69
Power Peak-Cut Control (Standard)70
Power Peak-Cut Control (Extended)71
Snowfall Fan Control72
External Master ON/OFF Control72
Night Operation (Sound Reduction) Control73
Operation Mode Selection Control74
Trouble/Operation Output75
Compressor Operation Output76
Operating Rate Output77
Test Operation78
Procedure and Summary of Test Operation78
Check Items before Test Operation (before Powering-On)79
Check at Main Power-On83
Address Setup84
Precautions84
Address Setup and Check Procedure84
Address Setup Procedure85
Check after Address Setup When Central Control System Is Connected98
Setting When Connecting Multiple Indoor Units to a FS (Flow Selector) Unit99
How to Set up the Cooling Only Indoor Unit104
Troubleshooting in Test Operation105
A Check Code Is Displayed on the Remote Controller105
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 Unit106
Operation from the Indoor Remote Controller106
Outdoor/Indoor Units that Do Not Operate in a Test Operation.)107
Test Operation Check109
Fan Check109
Single Cooling/Single Heating Test Operation Check110
Service Support Function113
Check Function for Connecting of Refrigerant and Control Lines113
Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit116
Check Code Clearing Function122
Remote Controller Distinction Function124
Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit125
Pulse Motor Valve (PMV) Forced Open Fully/Close Fully Function in Outdoor Unit125
Solenoid Valve Forced Open/Close Function in Outdoor Unit126
Fan Operation Check in Outdoor Unit127
Abnormal Outdoor Unit Discrimination Method by Fan Operating Function128
Manual Adjustment Function of Outside Temperature (TO) Sensor129
Refrigerant Leakage Detection131
Monitor Function of Remote Controller Switch132
Smms Wave Tool for Smartphone134
Prohibition/Permission of the NFC Setting134
Confirmation for the Generation of the Trouble of the NFC135
Troubleshooting136
Overview136
Troubleshooting Method137
Troubleshooting Based on Information Displayed on Remote Controller143
Check Codes Displayed on Remote Controller and SHRM-E Outdoor Unit (7-Segment Display on I/F Board) and Locations to be Checked147
Diagnosis Procedure for each Check Code164
7-Segment Display Function196
Oil Level Judgment Display202
SHRM-E Outdoor Interface P.C. Board Function Setting Exchange Table203
Leakage/Clogging of Refrigerating Cycle Circuit206
Sensor Characteristics211
Pressure Sensor Output Check214
Backup Operation216
(Emergency Operation)216
Note for Backup Operation216
Compressor Backup Operation Setting217
Outdoor Unit Backup Operation Setting218
Follower Outdoor Unit Backup Operation Setting (Failure of Follower Outdoor Unit)218
Header Outdoor Unit Backup Operation Setting (Failure of Header Outdoor Unit)220
Outdoor Unit Refrigerant Recovery Method223
Refrigerant Recovery from Failed Outdoor Unit (Pump-Down)223
Note for Refrigerant Recovery Operation223
Refrigerant Recovery Procedure a (Case of no Outdoor Unit Backup Operation Setting)223
Refrigerant Recovery Procedure B (Case of Outdoor Unit Backup Operation Setting)226
How to Operate System While Failed Outdoor Unit Being Repaired228
Work Procedure after Repair229
Replacing Compressors230
Compressor Replacement Procedure (Outline)230
Replacement of Compressors231
Check Procedure to Search Cause of Compressor Oil Shortage235
Outdoor Unit Parts Replacement Methods237
C. Board Exchange Procedures250
Replacement of Outdoor P.C. Boards250
List of Service P.C. Boards251
Configuration of Inverter Assembly251
Interface P.C. Board (MCC-1673) Replacement Procedure252
Comp-IPDU P.C. Board (MCC-1683) Replacement Procedure253
Fan-IPDU P.C. Board (MCC-1610) Replacement Procedure255
Noise Filter P.C. Board (MCC-1682 A, B) Replacement Procedure257
Multi Port Fs Unit Parts Replacement Methods259
Single Port Fs Unit (Long Piping Model) Parts Replacement Method265
Exploded Diagram/Parts List274

Brand	Toshiba
Model	MMY-MAP0726FT2P-UL
Category	Air Conditioner
Language	English

Toshiba MMY-MAP0726FT2P-UL User Manual

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