Table Of Contents - Toshiba RAS-4M27S3AV-E Service Manual

Table of Contents

Service Manual1
Table Of Contents2
Safety Precautions3
Specifications5
Summaries Of Product Characteristics6
Dred Installation Position6
Outline Of Dred Wiring6
Specifications Of Electrical Parts7
Operation Characteristic Curve26
Capacity Variation Ratio According To Outdoor Temperature26
Capacity Variation Ratio According To Pipe Length26
Refrigerant - Safety During Installation/Servicing27
Refrigerant Piping Installation27
Copper Pipes27
Refrigerant R410A27
Thicknesses Of Annealed Copper Pipes28
Joints28
Processing Of Piping Materials28
Flare Processing Procedures And Precautions28
Flare Connecting Procedures And Precautions30
Tightening Torque Of Flare30
Required Tools31
Recharging Of Refrigerant32
Configuration Of Refrigerant Charging32
Brazing Of Pipes33
Flux33
Materials For Brazing33
Brazing34
Construction Views35
Outdoor Unit View35
Wiring Diagram36
Wiring Procedure39
Refrigerant Cycle Diagram41
Operation Data42
Control Block Diagram48
Operation Description50
Outline Of Air Conditioner Control50
Role Of Indoor Unit Controller50
Contents Of Operation Command Signal50
Basic Operation52
Operation Control52
Operating Mode Selection When Performing 2-Room Operation53
Cooling/Heating Operation53
Outdoor Fan Motor Control54
Capacity Control55
Current Release Control55
Winding/Coil Heating Control56
Defrost Control (Only In Heating Operation)56
Compressor Protective Control56
Discharge Temperature Control57
Pulse Motor Valve (Pmv) Control57
High-Pressure Switch/Compressor Case Thermostat Control57
Various Setting On Outdoor Unit (Power Save, Cooling-Only, Etc.)58
Intermittent Operation Control For Indoor Fans Of The Indoor Unit At Thermo-Off Side In Heating Operation58
Installation Procedure59
Installation/Servicing Tools59
Refrigerant Piping60
Outdoor Unit Installation Place60
Optional Installation Parts (Local Supply)60
Necessary Space For Installation61
Fixing Bolt Arrangement Of Outdoor Unit61
How To Remove The Front Panel62
Tightening Connection62
Refrigerant Piping Connection63
Flaring63
Evacuating/Air Purge63
Use A Vacuum Pump63
Packed Valve Handling Precautions64
Electrical Work64
Wiring Connection64
Stripping Length Power Cord And Connecting Cable64
Check And Test Operation65
Miswiring (Mispiping) Check65
Test Operation67
Gas Leak Test67
Setting The Auto Restart67
Remote Control A-B Selection67
How To Diagnose The Trouble68
Discharging Method68
First Confirmation69
Confirmation Of Power Supply69
Operation Which Is Not A Trouble69
Primary Judgment70
Judgment By Flashing Led Of Indoor Unit70
Self-Diagnosis By Remote Controller (Check Code)71
How To Use Remote Controller In Service Mode71
Caution At Servicing72
Judgment Of Trouble By Symptom78
Wiring Failure (Interconnecting And Serial Signal)78
Outdoor Unit Does Not Operate78
Outdoor Unit Stops In A Little While After Operation Started78
Service Support Function (Led Display, Switch Operation)79
Trouble Diagnosis By Outdoor Led80
Troubleshooting Procedure89
Diagnosis When Compressor Does Not Work89
Diagnosis When Cooling/Heating Is Poor89
Troubleshooting For Demand Unit90
Inspection Of The Main Parts91
Sensor Characteristic Table91
How To Simply Judge Whether Outdoor Fan Motor Is Good Or Bad92
How To Replace The Main Parts95
Outdoor Unit Replacement95
Replacement Of Reactor101
Removal Of Defective Compressor103
Fan Guard Detachment And Attachment104
Fin Guard Detachment And Attachment104
Pmv Detachment And Attachment105
Exploded Views And Parts List110
Inverter Assembly111