Toshiba A90-0132 User Manual

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Modular Multi System

Service Manual

Air Conditioner - Multi Split Type System

A90-0132

HFC R407C

Table of Contents

Table of Contents3
Precautions for R407C Outdoor Units5
Introduction5
- Avoid Installation in the Following Locations:5
- Precautions5
- Precautions for R-407C Outdoor Units6
- Liquid Receiver Fusible Plug6
- System Pressure Measurement6
- Explanation of Toshiba Serial Number6
- Components7
- Outdoor Unit7
- Branching Joints/Headers7
- Operating Conditions8
- Outdoor Temperature8
- Room Temperature8
Summary8
- Mode Priority9
- Range of Combined Units9
- Restriction for Combination Units9
- Model Name9
- Branching10
Outline of MMS (Modular Multi System)10
Indoor Units12
Parts Specifications12
Outdoor Units13
Construction Views - Outdoor Units21
Built-In Duct22
Construction Views - Indoor Units22
- Built-In Slim Duct23
- Low Wall24
- Chassis25
- Ceiling26
- High Wall27
- 2-Way Cassette28
- 4-Way Cassette29
- Inverter Unit (10 HP, 8 HP)31
Wiring Diagrams31
- Fixed-Speed Unit (10 HP, 8 HP)32
- Fixed-Speed Unit (6 HP)33
- Inverter Unit (10 HP, 8 HP) Cooling Only34
- Fixed-Speed Unit (10 HP, 8 HP) Cooling Only35
- Wiring Diagrams36
- Wall Unit38
- Inverter Unit (10 HP, 8 HP) Heat Pump44
- Model MM-A0280HT, MM-A0224HT44
Refrigerant Piping Systematic Drawings44
- Model MM-A0280HX, MM-A0224HX45
- Model MM-A0160HX, MM-A0160CX46
- Fixed-Speed Unit (6 HP) Heat Pump46
- Model MM-A0280CT, MM-A0224CT47
- Model MM-A0280CX, MM-A0224CX48
- Normal Operation-Heat Pump System49
- Cooling Mode49
Combined Refrigerant Piping Systematic Drawings49
- Emergency Operation When Inverter Unit Has Failed50
- Heat Pump System (Master Unit Back-Up Operation: Cooling Mode)50
- Heat Pump System (Cooling Mode)51
- Combined Refrigerant Piping Systematic Drawings52
- Recovery of Refrigerant in Failed Outdoor Unit52
- Heat Pump System (Normal Outdoor Unit Refrigerant Recovery)52
- Refrigeration Cycle Schematic53
Refrigerant Cycle Schematic - Indoor Units53
- Thermostat On/Thermostat off54
- Outdoor Unit54
- Operation Start/Operation End54
Outline of Control54
- Electronic Expansion Valve (PMV) Control55
- Pulse Motor Valve (PMV) Control55
- Outdoor Fan Control55
- Capacity Calculation56
- Oil Level Valve Detection Control56
- Oil Equalizing this Control57
- Refrigerant/Oil Recovery Control57
- Release Valve Control58
- Fixed-Speed Compressor High Pressure Release Control58
- Compressor Winding Heating Control59
- Crank Case Heater Control59
- IPDU (Inverter) Control60
- Defrost Control (Reverse Defrost Method)61
- Cold Draught Prevention Control62
- IDU Exchanger Heat Removal62
- PMV (Pulse Motor Valve)63
- Cooling Operation in Low Ambient Temperature63
- Other Cautions63
- System Information Data Display (Displayed on the Inverter Unit Only)67
Self Diagnostic Display Information67
- Outdoor Unit Information Data Display (Displayed on each Outdoor Unit)68
- Outdoor Cycle Data Display (Displayed on each Outdoor Unit)69
- Outdoor Unit Information Data Display (Displayed on Inverter Unit Only)70
- LED Display on Indoor PC Board-MCC-1361-0171
- General Type71
- Indoor PC Board Parts Layout71
Control Circuit Configuration71
- Display on Remote Controller72
- Indoor PMV Full Open/Full Close Function72
- Switch Positions at Shipment from the Factory73
- Contents of Switch Set-Up74
- Jumper Set-Up75
- Service PC Board Selection Corresponded Table MCC-1361-0175
- Switch Set-Up75
- LCD Display76
- Remote Controller Check Display76
- Operating and Reading the Check Display76
Troubleshooting76
- 7 Segment Display77
- Filter Data77
- Check Data77
- Self Diagnostic Function78
- Diagnostic Procedure for Check Code79
- [04] Inverter Serial Signal Short Circuit79
- [0B] Drain Pump Fault80
- [0C] Indoor Sensor (TA) Short or Open Circuit Alarm80
- [11] Indoor Fan Motor Short Circuit Alarm81
- [12] Indoor PC Board Short Circuit Alarm81
- [14] G-Tr Short Circuit Protective Operation Alarm (Gate Transistor)82
- [1C] Extension IC, EEPROM Short Circuit Alarm83
- [17] Current Detection Circuit Alarm83
- [18] Outdoor Heat Exchanger Sensor (TE) Short Circuit83
- [1D] Compressor Error Alarm84
- [1F] Compressor Break down85
- [21] Inverter High Pressure SW Circuit Alarm86
- [22] High Pressure Protective Operation87
- [87] Missing Phase88
- Modify the Power Source Wiring88
- [89] Indoor over Capacity88
- [8D] Reduction in the No. of Connected Outdoor Units89
- [8E] Outdoor Unit Connection over Limit89
- [8F] Server Outdoor Address Incorrect90
- [93] Indoor TC1 Sensor Short Circuit Alarm90
- [94] Indoor TC2 Sensor Short Circuit Alarm90
- [95] Indoor/Outdoor Comunication Short Circuit91
- [96] No. of Connected Indoor Units over Capacity92
- [97] Central Management Communication Short Circuit93
- [98] Central Management Address Set-Up Fault94
- [99] Remote Controller Serial Signal Circuit Alarm95
- [9A] Indoor Unit Miswiring/Misconnection96
- [9F] Refrigerant Circulation Amount Shortage Judgement96
- [A0] Discharge Temp. Sensor (TD1) Short Circuit97
- [A2] Suction Temp. Sensor (TS) Short Circuit97
- [A1] Discharge Temp. Sensor (TD2) Short Circuit97
- [A6] Discharge Temperature TD1 Alarm98
- [A7] Suction Temperature (TS) Alarm99
- [AA] High Pressure Sensor (Pd) Short Circuit99
- [Ab] Pressure Sensor (Pd/Ps) Miswiring100
- [AE] Low Hz Time Discharge Temp. (TD1) Alarm101
- [AF] Outdoor Unit Power Source Phase Order Miswiring101
- [B9] Indoor Pressure Sensor Short Circuit102
- [B4] Low Pressure Sensor (Ps) Short Circuit102
- [Bb] Discharge Temperature (TD2) Alarm103
- [Bd] Mg-SW Protective Operation104
- [Be] Low Pressure (Ps) Protective Operation105
- [D1] Master Outdoor Unit Set-Up Alarm106
- [D2] Slave Outdoor Unit Alarm107
- [D3] TH Sensor Alarm107
- [D4] Oil Temp. (TK1) Sensor Alarm107
- [D5] Oil Temp. (TK2) Sensor Alarm107
- [D7] Low Oil Level Detection108
- 2-Way Valve Leakage/Blockage Check Procedure109
- Blockage Check Procedure for Oil Return Circuit of Oil Separator109
- [D8] Oil Temperature (TK1) Detection Alarm109
- [D9] Oil Temperature (TK2) Detection Alarm110
- Oil Tank Peripheral Circuit Leakage/Blockage Check Procedure111
- [Da] Abnormal Overheat of Heat Sink112
- SV3C Valve Blockage Check Procedure113
- [Db] SV3C Valve Blockage Detection113
- [DC] SV3C Valve Leakage Detection114
- SV3C Valve Leakage Check Procedure114
- [DD] Outdoor PMV Refrigerant Leakage Detection115
- [De] Indoor Address Undefined116
- [Df] Outdoor Address Undefined116
- [E1] Fixed-Speed (1) High Pressure SW System Alarm117
- [F0] Fixed-Speed (2) High Pressure SW System Alarm117
- [E5] Inverter IOL Short Circuit118
- [E6] Fixed-Speed (1) IOL, OCR Alarm119
- [F1] Fixed-Speed (2) IOL, OCR Alarm119
- Segment Display Function120
- Outdoor Unit 7 Segment Display (Interface PC Board)120
- When the System Has Stopped Due to an Error of the Outdoor Unit, Check the Following Items120
- Description of Functional Parts121
- When an Outdoor Unit Has Failed122
- Emergency Operation122
- When One Compressor Has Failed (Back-Up Set-Up of Compressor)122
Back-Up Operation122
- Fault in Fixed-Speed Unit (Back-Up of Slave Outdoor Unit)123
- Fault of Inverter Unit (Back-Up Set-Up of Master Outdoor Unit)124
- Outdoor Back-Up Set-Up in Cooling Season (Simple Setting Method)125
- Oil Tank Circuit System Error126
- Oil Level Judgement Result126
- Peripheral Circuits of Oil Tank126
Forced Function of Oil Level Detection126
Leak Test127
Refrigerant Pipe Installation127
- Vacuuming128
- Charging the System with Additional Refrigerant129
- Calculating the Amount of Additional Refrigerant Required129
- Refrigerant in the System When Shipped from the Factory129
- Additional Refrigerant Charging Method130
- Additional Refrigerant Charging Amount Reference Chart131
- Procedure and Summary of Trial Operation132
- Check before Trial Operation132
- Trial Operation Check133
- Flowchart of Trial Operation Procedure133
- Power Source and Initial Set-Up Check133
- Fan Operation Check133
- Cooling Operation Check134
- Criteria for Indoor Air Inlet/Outlet Temperature Difference135
- Criteria of Operation Current Value135
- Criteria of Operation Pressure135
- Automatic Address (between Outdoor Unit and Indoor Unit)136
- Cautions During Automatic Addressing136
- Service Support Function137
- Check Function for Connection of Refrigerant Pipe and Control Transmission Line137
- Function to Start/Stop (On/Off) Indoor Unit from Outdoor Unit138
- Trial Cooling Operation Function139
- Collective Start/Stop (On/Off) Function140
- Individual Start/Stop (On/Off) Function141
- Alarm Clear Function142
- Clearing of Check Code on Remote Controller142
- Clearing the Interface PC Board of the Inverter Outdoor Unit142
- Clearing of Check Code Alarm by Resetting Power Source143
- Remote Controller Identification Function143
- Identifying Procedure143
- Pulse Motor Valve (PMV) Manual “Full Open” Function in the Indoor Unit144
- Pulse Motor Valve (PMV) Forced Full Open/Full Close Function in Outdoor Unit144
- Refrigerant Recovery Method145
- Refrigerant Recovery Method for a Failed Outdoor Unit145
- When Back-Up Operation Has Not Been Utilised145
Replacing the Compressor145
- When Back-Up Operation Has Been Utilised146
- Position of Service Valve147
- Open/Close Direction of Service Valve147
- Explanatory Diagram: Modular Multi Service Valve147
- Compressor Replacement Procedure148
- Compressor Replacement Procedure149
- In Case of Removal of the Compressor from the Front Side149
- Outdoor Units (Inverter and Fixed-Speed Units)149
- Removing of Parts149
- Extraction of Oil from Compressor149
- Charging of Refrigerant150
- In Case of Removal of the Compressor from the Rear Side151
- Removing of Compressor152
- Replacing the Interface PC Board155
- MM-A0280Ht, Mma0280Hx, MM-A0280Ct, Mma0280Cx, MM-A0224Ht, Mma0224Hx, MM-A0224Ct, Mma0224Cx156
Exploded Views and Service Parts156
- MM-A0280Ht, MM-A0280Ct, MM-A0224Ht, MM-A0224Ct, MM-A0280Hx, MM-A0280Cx, MM-A0224Hx, MM-A0224Cx157
- MM-A0160Hx, MM-A0160Cx158
- MM-A0280Hx, MM-A0280Cx, MM-A0224Hx, MM-A0224Cx160
- Outdoor Unit Electrical Parts Assembly160
- MM-A0280Ht, MM-A0280Ct, MM-A0224Ht, MM-A0224Ct160
- MM-A0280Ht, MM-A0280Ct, MM-A0224Ht, MM-A0224Ct, MM-A0280Hx, MM-A0280Cx, MM-A0224Hx, MM-A0224Cx, MM-A0160Hx, MM-A0160Cx161
- Built-In Duct–MM-B056, MM-B080, MM-B112, MM-B140162
- Ceiling Type–MM-C042, MM-CR042, MM-C056, MM-CR056, MM-C080, MM-CR080, MM-C112, MM-CR112, MM-C140, MM-CR140163
- High Wall–MM-K042, MM-KR042, MM-K056, MM-KR056, MM-K080, MM-KR080164
- Chassis–MM-N028, MM-N042, MM-N056, MM-N080165
- Low Wall–MM-S056, MM-SR056, MM-S080, MM-SR080166
- Built-In Slim Duct–MM-SB028167
- 2-Way Cassette–MM-TU028, MM-TU042, MM-TU056168
- 4-Way Cassette–MM-U056, MM-U080169
- 4-Way Cassette–MM-U112, MM-U140170
- Ceiling Panel-RBC-U133PG(W)-PE171
- Ceiling Panel-RBC-U264PG(W)-E, RBC-U264PGR(W)-E172
- Ceiling Panel-RBC-U464PG(W)-E, RBC-U464PGR(W)-E173

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Toshiba A90-0132 Specifications

General

Brand	Toshiba
Model	A90-0132
Category	Air Conditioner
Language	English

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