Toshiba Super MMY-MAP0801HT8 - Page 270

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Table of Contents

Service Manual1
Check of Concentration Limit2
Total Amount of Refrigerant (Kg)2
No Partition2
Warnings on Refrigerant Leakage2
Table of Contents3
Safety Caution3
Combined Refrigerant Pipes Systematic Drawing3
Explanation of Illustrated Marks4
Confirmation of Warning Label on the Main Unit4
Explanation of Indications4
Safety Caution4
- Cautions on Installation/Service7
- New Refrigerant (R410A)7
- Pipe Materials7
- Safety Caution Concerned to New Refrigerant7
- General Tools8
- Required Tools for R410A8
- Tools8
- Environment9
- Recharge of Refrigerant9
- Branching Joints and Headers10
- Combination of Outdoor Units10
- Outdoor Units10
- Outline10
  - Indoor Units11
  - Remote Controller Switch12
  - Wireless Remote Controller Kit12
  - 4-Way Air Discharge Cassette Type13
  - Indoor Unit13
- Wiring Diagram13
  - 2-Way Air Discharge Cassette Type14
  - 1-Way Air Discharge Cassette Type15
  - High Wall Type21
  - Floor Standing Cabinet Type22
  - Floor Standing Concealed Type23
  - Floor Standing Type24
  - Outdoor Unit25
- Parts Rating26
  - High Wall Type28
  - Under Ceiling Type28
  - Floor Standing Type29
  - Cooling Only Model30
  - Heat Pump Model30
  - Outdoor Inverter31
  - Front Side32
  - Parts Layout in Outdoor Unit32
  - Rear Side32
  - Name of each Part33
  - Display Section35
  - Operation Section35
  - Parts Name of Remote Controller35
  - Correct Usage37
  - Requirement37
  - Automatic Operation (Auto Changeover)38
  - Cancel of Timer Operation39
  - TIMER Operation39
  - Re-Installation40
  - Troubles and Causes40
  - Confirmation before Operation41
  - Defrost During Heating Operation41
  - Heating Capacity41
  - Information41
  - Adjustment of Air Direction42
  - How to Set up the Air Direction42
  - How to Start Swing42
  - How to Stop Swing42
  - 2-Way/3-Way Air Discharge43
  - Heating Operation43
  - In Cooling Operation43
  - Left/Right Air Direction Adjustment44
  - Under Ceiling Type44
  - Up/Down Air Direction Adjustment44
  - Concealed Duct Standard Type45
  - 3 Minutes Protection Function47
  - Air Conditioner Operations and Performance47
  - Heating Characteristics47
  - Power Failure47
  - Cleaning of Air Filter48
  - Cleaning of Oil Guard Filter48
  - Daily Maintenance48
  - Maintenance48
  - Cleaning of Discharge Louver49
  - Before Cooling Season50
  - Cleaning of Drain Pan50
  - Concealed Duct High Static Pressure Type50
  - Air Inlet Grille51
  - Air Outlet Grille/Air Outlet Flap51
  - Attachment/Detachment of the Air Filter51
  - Cleaning of the Main Unit/Remote Controller53
  - Clean the Air Filter Frequently54
  - Close Window or Door Often54
  - Do Not Cool/Heat the Room Excessively54
  - How to Use the Air Conditioner Efficiently54
  - When the Following Symptoms Are Found55
  - Inverter Unit (5, 6, 8, 10, 12HP)56
- Refrigerant Piping Systematic Drawing56
  - Explanation of Functional Parts57
  - Indoor Unit58
- Combined Refrigerant Pipes Systematic Drawing59
  - Normal Operation (COOL Mode / DEFROST Mode)59
  - Normal Operation (HEAT Mode)60
  - Cooling Operation When Center Outdoor Backup61
  - Emergent Operation61
  - Heating Operation When Center Outdoor Backup62
  - In Case of Failure of Follower Unit63
  - Recovery of Refrigerant in Failed Outdoor Unit63
  - Check Code Clear64
- Control Outline64
  - Control Specifications64
  - Distinction of Outdoor Unit64
  - Cooling Fan Control68
  - Heating Fan Control68
  - Operation Start/Operation End68
  - Outdoor Unit68
  - PMV Control68
  - SV2 Gas Balance Control71
  - SV2 High Pressure Release Control71
  - SV2 Low Pressure Release Control71
  - SV41, 42 Low Pressure Release Control71
  - Compressor Case Thermo Control72
  - Heat Sink Temp Detection Control72
  - High Pressure SW Control72
  - Over-Current Protective Control72
  - Cooling Operation in Low Ambient Temperature73
  - Oil Equation Control Schematic Diagram73
  - PMV (Pulse Motor Valve) for Outdoor Unit73
- Applied Control74
  - Setup of Selecting Function in Indoor Unit74
  - Table: Function Selecting Item Numbers (DN)75
  - Applied Control in Indoor Unit77
  - Remote Location ON/OFF Control Box77
  - Ventilating Fan Control from Remote Controller78
  - Leaving-ON Prevention Control79
  - Power Peak-Cut from Indoor Unit79
  - Applied Control in Outdoor Unit80
  - Interface P.C. Board of Outdoor Unit80
  - Switch Position Magnified Drawing80
  - Cooling Priority, Heating Priority Control81
  - Outdoor Fan High Static Pressure Shift81
  - Outdoor Unit (Header Unit Only) Setup81
  - Specifications81
  - Connector Position Magnified Drawing83
  - Outdoor Unit Interface P.C. Board83
  - Power Peak-Cut Control84
  - Power Peak-Cut Control (Expansion)85
  - Setup at Power Peak-Cut Control (Expansion) Request85
  - External Master ON/OFF Control86
  - Snowfall Fan Control86
  - Night Operation Control87
  - Operation Mode Selection Control87
  - Check Items before Test Operation88
  - Main Check Items for Electric Wiring88
  - Procedure and Summary of Test Operation88
- Test Operation88
  - Check List90
  - Additional Amount of Refrigerant91
  - Additional Amount of Refrigerant by Pipe Length91
  - Corrective Amount of Refrigerant by System Capacity91
  - Check at Main Power-ON92
  - Check on Indoor Unit92
  - Check on Outdoor Unit92
  - Address Setup93
  - Address Setup and Check Procedure93
  - Rotary Switches93
  - Address Setup Procedure94
  - Automatic Address Setup94
  - Header Unit Interface P.C. Board94
  - System Address Switch on Outdoor Interface P.C. Board95
  - How to Set up Resistance of the End Terminal96
  - Indoor Side (Automatic Setup)96
  - Group Address97
  - Manual Address Setup from Remote Controller97
  - Change of Indoor Address from Remote Controller99
  - Operation While the Air Conditioner Stops99
  - To Select Another Line Address99
  - Operation While Air Conditioner Stops100
  - Clearance of Address101
  - In Case of Increase the Address-Undefined Indoor Units102
  - Check after Address Setup When Central Control System Is Connected103
  - A Check Code Is Displayed on the Remote Controller104
  - Troubleshooting in Test Operation104
  - Miswiring Example106
  - Cooling/Heating Test Operation Check107
  - Fan Check107
  - Test Operation Check107
  - Wired Remote Controller107
  - In Case of Wireless Remote Controller109
  - Outline of Test Operation from the Wireless Remote Controller109
  - Criterion for Cycle Status111
  - Criterion for Operating Power Current111
  - Criterion for Operating Pressure111
  - Check Function for Connecting of Refrigerant and Control Lines112
  - Service Support Function112
  - Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit114
  - Interface P.C. Board114
  - Cooling Test Operation Function115
  - Heating Test Operation Function115
  - Operation Procedure115
  - Batch Start/Stop (ON/OFF) Function116
  - Individual Start/Stop (ON/OFF) Individual Test Operation Function117
  - Clearing from the Main Remote Controller118
  - Error Clearing Function118
  - Error Clearing in Indoor Unit118
  - Clearing from the Interface P.C. Board119
  - Clearing of Error Check Code by Power Reset119
  - Distinction Procedure120
  - Remote Controller Distinction Function120
  - Clear121
  - Close Fully121
  - Open Fully121
  - Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit121
  - Solenoid Valve Forced Open/Close Function in Outdoor Unit122
  - Fan Operation Check in Outdoor Unit123
  - Abnormal Outdoor Unit Discrimination Method124
  - By Fan Operating Function124
  - In Case to Operate the Fans in All the Normal Outdoor Units124
  - Manual Adjustment Function of Outside Temp (TO) Sensor125
  - Service Support Function List125
  - Indoor Fan Only Operating Mode126
  - Indoor Fan Operation Check Function126
  - Calling of Display Screen127
  - Monitor Function of Remote Controller Switch127
- Troubleshooting128
  - Troubleshooting Summary128
  - Check Code List129
  - Check Method129
  - Display in Wired Remote Controller132
  - New Check Code132
  - Special Mention132
  - Confirmation and Check133
  - Confirmation of Error History133
  - In Case of Main Remote Controller (RBC-AMT21E)133
  - Troubleshooting by Check Display on Remote Controller133
  - In Case of TCC-LINK Central Control Remote Controller (TCB-SC642TLE)134
  - Display on CHECK Monitor135
  - In Case of AI-NET Central Control Remote Controller135
  - Operation for CHECK Display135
  - Reading of CHECK Monitor Display135
  - Error Detected by AI-NET Central Control Device147
  - Error Detected by TCC-LINK Central Control Device147
  - Cautions When Servicing for Compressor148
  - How to Check Inverter Output148
  - How to Check Resistance of Compressor Winding148
  - How to Check the External Fan Motor148
  - Diagnosis Procedure for each Check Code149
  - Automatic Address Start Error155
  - Communication Error in Indoor P.C. Board A’ssy155
  - Duplicated Master Remote Controller155
  - No Corresponding Indoor Unit During Automatic Address156
  - Connected Indoor Units Capacity over157
  - Communication Error between Indoor Header and Follower158
  - Header Outdoor Units Quantity Error159
  - Unit Connected to Other Line During Automatic Address159
  - Communication Sending Error between Outdoor Units160
  - Decrease of Connected Outdoor Units161
  - Duplicated Follower Outdoor Address Setup161
  - Follower Outdoor Unit Error162
  - IPDU Communication Error162
  - Indoor TC2 Sensor Error163
  - Indoor TCJ Sensor Error163
  - Indoor TC1 Sensor Error164
  - TD1 Sensor Error164
  - TD2 Sensor Error164
  - TE1 Sensor Error164
  - Indoor TA Sensor Error165
  - TL Sensor Error165
  - TO Sensor Error165
  - TS1 Sensor Error165
  - Outdoor Temp Sensor Miscabling166
  - TH Sensor Error166
  - Outdoor Pressure Sensor Miscabling167
  - Pd Sensor Error168
  - Ps Sensor Error168
  - Indoor Other Error169
  - Outdoor EEPROM Error169
  - Compressor Breakdown170
  - Compressor Error (Lock)171
  - Current Detective Circuit System Error172
  - Compressor 1 Case Thermo Operation173
  - Compressor 2 Case Thermo Operation173
  - Low-Pressure Protective Operation174
  - Oil Level down Detection Protection175
  - Clogging Check for SV3B Valve176
  - Clogging for SV3E Valve176
  - Leakage Check for SV3A Valve176
  - Leakage Check for SV3C Valve176
  - Clogging Check for Oil-Equalization Circuit177
  - Clogging Check for SV3A Valve177
  - Oil Level Detective Temperature Sensor Error178
  - TK1 Temperature Detective Circuit Error178
  - Oil Level Detective Circuit System Error179
  - TK3 Temperature Detective Circuit Error180
  - TK4 Temperature Detective Circuit Error181
  - Duplicated Indoor Header Units182
  - Duplicated Setup of Outdoor Line Address182
  - Group Line in Individual Indoor Unit183
  - Indoor Capacity Unset184
  - Indoor Group / Address Unset184
  - Duplicated Central Control Addresses185
  - Outdoor Capacity Unset185
  - Quantity over of Connected Outdoor Units185
  - IPDU Quantity Error186
  - Extended IC Error187
  - Indoor Fan Motor Error187
  - Interlock in Indoor Unit from Outside187
  - Discharge Temp TD1 Error188
  - Actuation of High-Pressure SW189
  - Heat Sink Overheat Error191
  - Open Phase, Negative Phase191
  - Indoor Overflow Error192
  - Outdoor Liquid Back Detection Error194
  - Gas Leak Detection195
  - 4-Way Valve Operation Error198
  - High-Pressure Protective Operation199
  - Outdoor Fan IPDU Error201
  - G-Tr Short-Circuit Protection Error202
  - Compressor Position Detective Circuit Error203
  - Other Indoor Error203
  - AI-NET Communication Line Error204
  - 7-Segment Display Function205
  - 7-Segment Display on the Outdoor Unit (Interface P.C. Board)205
  - How to Read the Check Monitor205
  - Data Display of System Information206
  - Data Display of Outdoor Unit Information207
  - Data Display of Outdoor Cycle208
  - Data Display of Indoor Unit Information209
  - Outdoor EEPROM Write-In Error Code Display209
  - Sensor Characteristics210
  - Temperature Sensor Characteristics210
  - I/O Cable Connection Table211
  - Output Voltage — Pressure211
  - Pressure Sensor Characteristics211
  - Pd Sensor Characteristics212
  - Pressure Sensor Output Check212
  - Ps Sensor Characteristics213
Indoor Controller Block Diagram214
Configuration of Control Circuit214
- Positions to be Checked on the Interface P.C. Board (MCC-1429)224
- Inverter P.C. Board (MCC-1502)225
- Power P.C. Board for Fan (MCC-1439)226
- Outdoor Interface P.C. Board227
- Dip Switch Function Exchange Setup List227
- Before Backup Operation228
- Compressor Backup Setup228
Backup Operations (Emergency Operation)228
- Outdoor Unit Backup Setup229
- In Case of Trouble on Follower Outdoor Unit229
- Setup for Header Unit229
- Setup for Outdoor Unit with Trouble229
- Setup for the Header Unit230
- In Case of Trouble on Header Unit230
- Setup for the Unit Selected as the Header Unit231
- Connection Change of the Communication Line231
- Backup Setup for Outdoor Unit During Cooling Season232
- Judgment Result of Oil Level233
Oil Level Judgment Display233
- Before Refrigerant Recovery Operation234
- Refrigerant Recovery Procedure234
Refrigerant Recovery When Replacing the Compressor234
- Setup for the Troubled Outdoor Unit235
- Selection of Outdoor Unit for Pressure Adjustment235
- Setup for Outdoor Unit for Adjustment of Pressure235
- Display Example235
- Backup Operation of the Outdoor Unit Is Being Executed236
- Setup for the Unit Selected as Header Unit236
- Process after Repair239
- Trouble with Clogging240
- Trouble with Leakage240
Leakage/Clogging of Oil-Equalization Circuit240
Compressor Replacing Procedure242
Replacing Compressor242
- Measurement of Oil Amount in the Defective Compressor243
- Removal of Defective Compressor243
- Concept of Exchange243
- Color Check for Oil of the Defective Compressor244
- In Case of Replacing of Troubled Compressor Only244
- In Case of Replacing of both Troubled and Normal Compressors245
- Measurement of Oil Amount in the Normal Compressor245
- Adjustment of Oil Amount in the Service Compressor245
- Installation of Compressor246
- Vacuuming246
- Full Opening of PMV246
- Refrigerant Charging246
- Propeller Fan Motor249
- Cabinet249
Reolacing Method of Parts249
- P.C. Board Exchange Procedures259
- Exchange of P.C. Board for Indoor Service259
- Requirement at Exchange of P.C. Board Assembly for Indoor Service259
- Readout Setup Contents from EEPROM260
- Item Code Necessary at Minimum260
- Remote Controller Operation Diagram260
- Exchange of P.C. Board for Service261
- Writing-In of Setup Contents to EEPROM262
- EEPROM Layout262
- Indoor Unit Capacity263
- Make a Note of the Setup Contents263
- Cautions in Service for Compressor264
- How to Check Outdoor Fan Motor264
- How to Check Fan Power Supply P.C. Board and Fan IPDU265
- MCC-1439 Front View265
- Interface Board Replacement Procedure Manual266
- Comp-IPDU Board Replacement Procedure Manual267
- Board Layout the Inverte267
- Switch Layout on the Board267
- Notice for Wiring268
- Inverter Assembly Configuration269

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