Toshiba MMY-MAP0804HT5P

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6 2-way valve coils

Pressure sensors

locations

MAP0804

MAP1004

MAP1204

MAP1404

MAP1604

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SV3B

SV3D

SV42

PD sensor

PS sensor

SV41

Accumulator

Rear

Front

Inverter assembly

Liquid tank

Oil separator

Compressor 1

SV2

SV5

SV3A

SV3C

SV3E

Compressor 2

SV3B

SV3D

SV42 SV43

PD sensor

PS sensor

SV41

Accumulator

Rear

Front

Inverter assembly

Liquid tank

Oil separator

Compressor 1

SV2SV6

SV3A

SV3C

SV3E

SV3F

Compressor 2

Compressor 3

Main Page

Table of Contents2
Safety Caution6
New Refrigerant (R410A)19
Wiring Diagrams21
Outdoor Unit21
Indoor Unit23
4-Way Cassette Type23
Compact 4-Way Cassette Type24
1-Way Cassette Type (Compact Type)25
1-Way Cassette Type SH Series26
2-Way Cassette Type 2 Series27
Concealed Duct Standard Type28
Concealed Duct Standard Type 6 Series29
Concealed Duct High Static Pressure Type30
Slim Duct Type32
Slim Duct Type (AP024, AP027)33
Ceiling Type34
High Wall Type 4MH Series35
High Wall Type 3 Series36
Floor Standing Cabinet Type37
Floor Standing Concealed Type38
Floor Standing Type39
Air to Air Heat Exchanger with DX Coil Unit40
Fresh Air Intake Indoor Unit44
Parts Rating46
Outdoor Unit (60Hz Model: MMY-MAP *** 4 * T5 * P * )46
Outdoor Inverter (60Hz Model: MMY-MAP *** 4HT5P * P)47
Parts Layout in Outdoor Unit48
Parts Layout in Inverter Assembly50
Outdoor (Inverter) Print Circuit Board52
Interface P.C. Board (MCC-1606)52
Inverter P.C. Board for Compressor (MCC-1596) A3-IPDU53
Inverter P.C. Board for Fan (MCC-1610)54
Refrigerant Piping Systematic Drawing55
Combined Refrigerant Piping System Schematic Diagrams59
Normal Operation (COOL Mode / DEFROST Mode)59
High Outside Air Temperature (Roughly 20°C or Above)59
Normal Operation (COOL Mode) - Low Outside Air Temperature (Roughly below 20°C)60
Normal Operation (HEAT Mode)61
Emergency Operation (Cooling Operation under Header Outdoor Unit Backup Scenario)62
Emergency Operation (Heating Operation under Header Outdoor Unit Backup Scenario)63
Refrigerant Recovery from Failed Outdoor Unit (Pump-Down Operation under Follower Outdoor Unit Backup Scenario)64
Control Outline65
Applied Control and Functions (Including Circuit Configuration)80
Indoor Controller Block Diagram80
When Wired (Simple) Remote Controller Connected80
When Wireless Remote Controller Kit Connected83
When both Main (Sub) Remote Controller and Wireless Remote Controller86
Kit Connected86
Indoor Printed Circuit Board89
Optional Connector Specifications of Indoor P.C. Board92
Test Operation of Indoor Unit93
Method to Set Indoor Unit Function DN Code94
Applied Control of Indoor Unit98
Applied Control for Outdoor Unit101
Outdoor Fan High Static Pressure Shift101
Priority Operation Mode Setting102
Applied Control of Outdoor Unit104
Power Peak-Cut Control (Standard)105
Power Peak-Cut Control (Extended)106
Snowfall Fan Control107
External Master ON/OFF Control107
Night Operation (Sound Reduction) Control108
Operation Mode Selection Control109
Error/Operation Output110
Compressor Operation Output111
Operating Rate Output112
Test Operation113
Procedure and Summary of Test Operation113
Check Items before Test Operation (before Powering-On)114
Check at Main Power-On118
Address Setup119
Precautions119
Address Setup and Check Procedure119
Address Setup Procedure120
Check after Address Setup When Central Control System Is Connected133
Troubleshooting in Test Operation134
A Check Code Is Displayed on the Remote Controller134
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 Unit135
There Is no Display of a Check Code on the 7-Segment Display on the Interface135
PC Board of the Header Unit, Although There Is Indoor Unit that Is Not Accepting Operation from the Indoor Remote Controller135
In Checking the Number of Connected Outdoor Units and Connected Indoor Units136
Outdoor/Indoor Units that Do Not Operate in a Test Operation.)136
Test Operation Check138
Fan Check138
Single Cooling/Single Heating Test Operation Check139
Service Support Function143
Check Function for Connecting of Refrigerant and Control Lines143
Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit145
Error Clearing Function150
Remote Controller Distinction Function152
Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit153
Pulse Motor Valve (PMV) Forced Open Fully/Close Fully Function in Outdoor Unit153
Solenoid Valve Forced Open/Close Function in Outdoor Unit154
Fan Operation Check in Outdoor Unit155
Abnormal Outdoor Unit Discrimination Method by Fan Operating Function156
Manual Adjustment Function of Outside Temperature (TO) Sensor157
Monitor Function of Remote Controller Switch158
Troubleshooting161
Overview161
Troubleshooting Method162
Troubleshooting Based on Information Displayed on Remote Controller168
Check Codes Displayed on Remote Controller and SMMS-I Outdoor Unit (7-Segment Display on I/F Board) and Locations to be Checked173
Diagnosis Procedure for each Check Code189
7-Segment Display Function220
Oil Level Judgment Display226
Leakage/Clogging of Refrigerating Cycle Circuit227
Sensor Characteristics231
Pressure Sensor Output Check234
Backup Operation236
(Emergency Operation)236
Note for Backup Operation236
Compressor Backup Operation Setting237
Outdoor Unit Backup Operation Setting238
Follower Outdoor Unit Backup Operation Setting (Failure of Follower Outdoor Unit)238
Header Outdoor Unit Backup Operation Setting (Failure of Header Outdoor Unit)240
Cooling-Season Outdoor Unit Backup Operation Setting242
Outdoor Unit Refrigerant Recovery Method243
Refrigerant Recovery from Failed Outdoor Unit (Pump-Down)243
Note for Refrigerant Recovery Operation243
Refrigerant Recovery Procedure a (Case of no Outdoor Unit Backup Operation Setting)243
Refrigerant Recovery Procedure B (Case of Outdoor Unit Backup Operation Setting)247
How to Operate System While Failed Outdoor Unit Being Repaired248
Work Procedure after Repair249
Replacing Compressors250
Compressor Replacement Procedure (Outline)250
Replacement of Compressors251
Check Procedure to Search Cause of Compressor Oil Shortage256
Outdoor Unit Parts Replacement Methods259
C. Board Exchange Procedures272
Replacement of Indoor P.C. Boards272
Replacement of Outdoor P.C. Boards279
List of Service P.C. Boards279
Configuration of Inverter Assembly279
Interface Board (MCC-1606) Replacement Method280
Comp-IPDU P.C. Board (MCC-1596) Replacement Procedure281
Fan IPDU P.C. Board (MCC-1610) Replacement Procedure283
Noise Filter P.C. Board (MCC-1608 A, B) Replacement Procedure284
Exploded Diagram/Parts List287

Toshiba MMY-MAP0804HT5P - Page 265

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