Table Of Contents - Toshiba MMY-MAP0804HT8-E Service Manual

Table of Contents

Service Manual1
Model Name1
Heat Pump Model1
Cooling Only Model1
Table Of Contents2
Original Instruction6
Generic Denomination: Air Conditioner6
Definition Of Qualified Installer Or Qualified Service Person6
Definition Of Protective Gear7
Explanation Of Illustrated Marks7
Explanation Of Indications7
Warning Indications On The Air Conditioner Unit8
Confirmation Of Warning Label On The Main Unit8
Precautions For Safety9
Explanations Given To User13
Relocation13
Declaration Of Conformity14
Specifications15
Carrying In The Outdoor Unit17
Weight Centre And Weight18
Weight Centre Of An Outdoor Unit18
Selection Of Pipe Size19
Coupling Size Of Brazed Pipe19
Screw Size And Tightening Torque19
Adding Refrigerant20
New Refrigerant (R410A)22
Safety Caution Concerned To New Refrigerant22
Cautions On Installation/Service22
Pipe Materials22
Required Tools For R410A23
Tools Exclusive For R410A23
General Tools (Conventional Tools Can Be Used.)23
Wiring Diagrams24
Outdoor Unit24
4-Way Air Discharge Cassette Type26
Indoor Unit26
Compact 4-Way Cassette Type27
1-Way Air Discharge Cassette Type (Compact Type)28
1-Way Air Discharge Cassette Type Sh 2 Series29
2-Way Air Discharge Cassette Type 1 Series30
2-Way Air Discharge Cassette Type 2 Series31
Concealed Duct Standard Type32
Concealed Duct High Static Pressure Type33
Slim Duct Type35
Under Ceiling Type36
High Wall Type 2 Series37
High Wall Type 3 Series38
Floor Standing Cabinet Type39
Floor Standing Concealed Type40
Floor Standing Type41
Fresh Air Intake Indoor Unit For S-Mms42
Parts Rating44
Outdoor Unit (60Hz Model: Mmy-Map 4Ht7)45
Outdoor Inverter (50Hz Model: Mmy-Map 4Ht8-E, Map 4Ht8-Tr, Map 4Ht8, Map 4T8-Sg)46
Outdoor Inverter (60Hz Model: Mmy-Map 4Ht7)47
Parts Layout In Outdoor Unit54
Parts Layout In Inverter Assembly56
Outdoor (Inverter) Print Circuit Board58
Interface P.c. Board (Mcc-1606)58
Inverter P.c. Board For Compressor (Mcc-1596) A3-Ipdu59
Inverter P.c. Board For Fan (Mcc-1610)60
Refrigerant Piping Systematic Drawing61
Explanation Of Functional Parts63
Combined Refrigerant Piping System Schematic Diagrams65
Normal Operation (Cool Mode / Defrost Mode) - High Outside Air Temperature (Roughly 20 °C Or Above)65
Normal Operation (Cool Mode) - Low Outside Air Temperature (Roughly Below 20 °C)66
Normal Operation (Heat Mode)67
Emergency Operation (Cooling Operation Under Header Outdoor Unit Backup Scenario)68
Emergency Operation (Heating Operation Under Header Outdoor Unit Backup Scenario)69
Refrigerant Recovery From Failed Outdoor Unit (Pump-Down Operation Under Follower Outdoor Unit Backup Scenario)70
Control Outline71
Control Specifications71
Defrosting Commencement Conditions81
Details Of Defrosting Control81
Defrosting Termination Conditions81
Details Of Defrosting Termination Control81
Sv2 Gas Balance Control82
Sv2 High Pressure Release Control82
Sv2 Low Pressure Release Control82
Sv41, 42, 43 Low Pressure Release Control83
Sv5 High Pressure Release Control83
Current Release Control84
Heat Sink Temperature Detection Control84
High Pressure Sw Control84
Overcurrent Protection Control84
Other Points To Note85
Cooling Operation Under Low Outside Temperature Conditions85
Pmv (Pulse Motor Valve)85
Schematic Diagram For Oil Equation Control85
Indoor Controller Block Diagram86
When Main (Sub) Remote Controller Connected86
Applied Control And Functions (Including Circuit Configuration)86
When Wireless Remote Controller Kit Connected89
When Both Main (Sub) Remote Controller And Wireless Remote Controller Kit Connected92
Indoor Printed Circuit Board95
Optional Connector Specifications Of Indoor P.c. Board98
Test Operation Of Indoor Unit99
Check Function For Operation Of Indoor Unit99
Method To Set Indoor Unit Function Dn Code100
Applied Control Of Indoor Unit104
Control System Using Remote Control Interface (Tcb-Ifcb4E2)104
Wiring Diagram Of Control System Using Remote Control Interface104
Ventilating Fan Control From Remote Controller105
Leaving-On Prevention Control106
Power Peak-Cut From Indoor Unit106
Applied Control For Outdoor Unit107
Outdoor Fan High Static Pressure Shift107
Maximum External Static Pressures Of Base Outdoor Units107
Maximum External Static Pressures For Combined Use Of Base Units107
Priority Operation Mode Setting108
High Efficiency Type108
Outdoor Unit Setup Method108
Indoor Unit Setup Method For Priority Indoor Unit Mode109
Applied Control Of Outdoor Unit110
Layout Of Outdoor Unit Interface P.c. Board110
Power Peak-Cut Control (Standard)111
Power Peak-Cut Control Settings111
Power Peak-Cut Control (Extended)112
Specifications Of Display Relay Contact112
Snowfall Fan Control113
External Master On/Off Control113
Night Operation (Sound Reduction) Control114
Operation Mode Selection Control115
Sw1: Cool Mode Selection Switch115
Sw2: Heat Mode Selection Switch115
Error/Operation Output116
Output Relay (K1, K2, K3) Contact Specifications116
Compressor Operation Output117
Operating Rate Output118
Test Operation119
Procedure And Summary Of Test Operation119
Main Check Items For Electric Wiring120
Check Items Before Test Operation (Before Powering-On)120
Check The Additional Amount Of Refrigerant123
Additional Amount Of Refrigerant By Pipe Length123
Check At Main Power-On124
Check On The Indoor Unit124
Precautions125
Address Setup And Check Procedure125
Address Setup Procedure126
Interface P.c. Board On The Header Outdoor Unit126
Switch Setting130
Manual Address Setup From The Remote Controller131
Confirming The Numbers And Positions Of Indoor Units132
To Find an Indoor Unit's Position from Its Address133
Changing The Indoor Unit Address Using A Remote Controller134
To Select Another System Address134
To Change An Indoor Unit Address Using A Wired Remote Controller134
Resetting The Address136
In The Case Of An Increase In Address-Undefined Indoor Units138
Check After Address Setup When Central Control System Is Connected139
Troubleshooting In Test Operation140
A Check Code Is Displayed On The Remote Controller140
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 H141
There Is No Display Of A Check Code On The 7-Segment Display On The Interface Pc Board Of141
Remote Controller141
In Checking The Number Of Connected Outdoor Units And Connected Indoor Units After Ad142
Units That Do Not Operate In A Test Operation.)142
Miswiring Example143
Test Operation Check144
Fan Check144
Cooling/Heating Test Operation Check145
Wireless Remote Controller146
Criteria For The Difference Between Suction And Discharge Temperatures148
Criteria For Operating Power Current148
Criteria For Cycle Status148
Service Support Function149
Check Function For Connecting Of Refrigerant And Control Lines149
Function To Start/Stop (On/Off) Indoor Unit From Outdoor Unit151
Cooling Test Operation Function152
Heating Test Operation Function153
Batch Start/Stop (On/Off) Function154
Individual Start/Stop (On/Off) Individual Test Operation Function155
Error Clearing Function156
Clearing From The Main Remote Controller156
Error Clearing In Outdoor Unit156
Clearing Error By Using Switches On The Interface Board Of Header Unit157
Clearing Error By Resetting Power157
Remote Controller Distinction Function158
Pulse Motor Valve (Pmv) Forced Open/Close Function In Indoor Unit159
Pulse Motor Valve (Pmv) Forced Open Fully/Close Fully Function In Outdoor Unit159
Solenoid Valve Forced Open/Close Function In Outdoor Unit160
Fan Operation Check In Outdoor Unit161
Abnormal Outdoor Unit Discrimination Method By Fan Operating Function162
Manual Adjustment Function Of Outside Temperature (To) Sensor163
Service Support Function List164
Monitor Function Of Remote Controller Switch165
Calling Of Display Screen165
Troubleshooting167
Before Engaging In Troubleshooting167
Overview167
Troubleshooting Method168
List Of Check Codes (Indoor Unit)168
List Of Check Codes (Outdoor Unit)170
Troubleshooting Based On Information Displayed On Remote Controller174
Using Main Remote Controller (Rbc-Amt32E)174
Using Tcc-Link Central Control Remote Controller (Tcb-Sc642Tle2)175
Using Indoor Unit Indicators (Receiving Unit Light Block)176
Check Codes Displayed On Remote Controller And Smms-I Outdoor Unit (7-Segment Display On I/F Board) And Locations To Be Checked179
Errors Detected By Tcc-Link Central Control Device193
Points To Note When Servicing Compressor194
How To Check Inverter Output194
How To Check Resistance Of Compressor Winding194
How To Check Outdoor Fan Motor194
Diagnosis Procedure For Each Check Code195
7-Segment Display Function226
Interface P.c. Board226
Checking Procedure To Be Followed In Event Of Abnormal Shutdown226
Display Of System Information227
Display Of Outdoor Unit Information228
Display Of Outdoor Cycle Data229
Oil Level Judgment Display232
Oil Level Judgment Results232
Leakage/Clogging Of Refrigerating Cycle Circuit233
Sensor Characteristics237
Temperature Sensor Characteristics237
Pressure Sensor Characteristics238
Input/Output Wiring Summary238
Output Voltage Vs. Pressure238
Indoor Tc1 Sensor239
Indoor Tc2 And Tcj Sensors239
Pressure Sensor Output Check240
Pd Sensor Characteristics240
Note For Backup Operation242
Backup Operation (Emergency Operation)242
Compressor Backup Operation Setting243
Outdoor Unit Backup Operation Setting244
Follower Outdoor Unit Backup Operation Setting (Failure Of Follower Outdoor Unit)244
Header Outdoor Unit Backup Operation Setting (Failure Of Header Outdoor Unit)246
Cooling-Season Outdoor Unit Backup Operation Setting248
Outdoor Unit Refrigerant Recovery Method249
Refrigerant Recovery From Failed Outdoor Unit (Pump-Down)249
Note For Refrigerant Recovery Operation249
Refrigerant Recovery Procedure A (Case Of No Outdoor Unit Backup Operation Setting)249
Selection Of Outdoor Unit For Pressure Adjustment250
Refrigerant Recovery Procedure B (Case Of Outdoor Unit Backup Operation Setting)252
Setup Of Outdoor Units Other Than Header Unit And Failed Unit253
How To Operate System While Failed Outdoor Unit Being Repaired254
Work Procedure After Repair255
Replacing Compressors256
Compressor Replacement Procedure (Outline)256
Replacement Of Compressors257
Checking Color Of Oil In Faulty Compressor257
When Replacing Faulty Compressor Only257
When Replacing Normal As Well As Faulty Compressor258
Measuring Amount Of Oil In Normal Compressor258
Adjusting Amount Of Oil In New Compressors258
When Replacing Normal As Well As Faulty Compressors259
Installing Compressor260
Vacuum-Pumping260
Method To Fully Open Pmv Manually260
Check Procedure To Search Cause Of Compressor Oil Shortage261
Outdoor Unit Parts Replacement Methods264
P.c. Board Exchange Procedures277
Replacement Of Indoor P.c. Boards277
Reading Setting Data From Eeprom279
Code No. (Dn Code) Necessary At Minimum279
Remote Controller Operation Diagram279
Procedure 2: Replacing P.c. Board280
Writing Setting Data In Eeprom281
Eeprom Location Diagram282
Replacement Of Outdoor P.c. Boards284
List Of Service P.c. Boards284
Configuration Of Inverter Assembly284
Interface Board (Mcc-1606) Replacement Method285
Comp-Ipdu P.c. Board (Mcc-1596) Replacement Procedure286
Fan Ipdu P.c. Board (Mcc-1610) Replacement Procedure288
Noise Filter P.c. Board (Mcc-1608 A, B) Replacement Procedure289
Exploded Diagram/Parts Price List292
Refrigeration Circuit Diagram294