Table Of Contents - Toshiba HFCR407C Service Manual

Table of Contents

Table Of Contents3
Introduction5
Precautions5
Avoid Installation In The Following Locations:5
Precautions For R407C Outdoor Units5
Precautions For R-407C Outdoor Units6
Liquid Receiver Fusible Plug6
System Pressure Measurement6
Explanation Of Toshiba Serial Number6
Components7
Outdoor Unit7
Branching Joints/Headers7
Summary8
Operating Conditions8
Outdoor Temperature8
Room Temperature8
Model Name9
Range Of Combined Units9
Restriction For Combination Units9
Mode Priority9
Outline Of Mms (Modular Multi System)10
Branching10
Parts Specifications12
Indoor Units12
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
Wiring Diagrams31
Inverter Unit (10 Hp, 8 Hp)31
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
Wall Unit38
Refrigerant Piping Systematic Drawings44
Inverter Unit (10 Hp, 8 Hp) Heat Pump44
Model Mm-A0280Ht, Mm-A0224Ht44
Model Mm-A0280Hx, Mm-A0224Hx45
Fixed-Speed Unit (6 Hp) Heat Pump46
Model Mm-A0160Hx, Mm-A0160Cx46
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
Recovery Of Refrigerant In Failed Outdoor Unit52
Heat Pump System (Normal Outdoor Unit Refrigerant Recovery)52
Refrigeration Cycle Schematic53
Refrigerant Cycle Schematic - Indoor Units53
Outline Of Control54
Operation Start/Operation End54
Thermostat On/Thermostat Off54
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
Other Cautions63
Cooling Operation In Low Ambient Temperature63
Pmv (Pulse Motor Valve)63
Self Diagnostic Display Information67
System Information Data Display (Displayed On The Inverter Unit Only)67
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
Control Circuit Configuration71
Led Display On Indoor Pc Board-Mcc-1361-0171
General Type71
Indoor Pc Board Parts Layout71
Display On Remote Controller72
Indoor Pmv Full Open/Full Close Function72
Switch Positions At Shipment From The Factory73
Contents Of Switch Set-Up74
Service Pc Board Selection Corresponded Table Mcc-1361-0175
Switch Set-Up75
Jumper Set-Up75
Troubleshooting76
Remote Controller Check Display76
Operating And Reading The Check Display76
Lcd Display76
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
[17] Current Detection Circuit Alarm83
[18] Outdoor Heat Exchanger Sensor (Te) Short Circuit83
[1C] Extension Ic, Eeprom Short Circuit Alarm83
[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
[B4] Low Pressure Sensor (Ps) Short Circuit102
[B9] Indoor Pressure Sensor 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
[Db] Sv3C Valve Blockage Detection113
Sv3C Valve Blockage Check Procedure113
[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
Back-Up Operation122
Emergency Operation122
When One Compressor Has Failed (Back-Up Set-Up Of Compressor)122
When An Outdoor Unit Has Failed122
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
Forced Function Of Oil Level Detection126
Oil Tank Circuit System Error126
Oil Level Judgement Result126
Peripheral Circuits Of Oil Tank126
Refrigerant Pipe Installation127
Leak Test127
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
Replacing The Compressor145
Refrigerant Recovery Method145
Refrigerant Recovery Method For A Failed Outdoor Unit145
When Back-Up Operation Has Not Been Utilised145
When Back-Up Operation Has Been Utilised146
Explanatory Diagram: Modular Multi Service Valve147
Open/Close Direction Of Service Valve147
Position Of Service Valve147
Compressor Replacement Procedure148
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
Exploded Views And Service Parts156
Mm-A0280Ht, Mma0280Hx, Mm-A0280Ct, Mma0280Cx, Mm-A0224Ht, Mma0224Hx, Mm-A0224Ct, Mma0224Cx156
Mm-A0280Ht, Mm-A0280Ct, Mm-A0224Ht, Mm-A0224Ct, Mm-A0280Hx, Mm-A0280Cx, Mm-A0224Hx, Mm-A0224Cx157
Mm-A0160Hx, Mm-A0160Cx158
Outdoor Unit Electrical Parts Assembly160
Mm-A0280Ht, Mm-A0280Ct, Mm-A0224Ht, Mm-A0224Ct160
Mm-A0280Hx, Mm-A0280Cx, Mm-A0224Hx, Mm-A0224Cx160
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