Table Of Contents - Toshiba RAS-5M34S3AV-E Service Manual

Table of Contents

Service Manual1
Table Of Contents2
Safety Precautions3
Explanation Of Indications3
Explanation Of Illustrated Marks3
For General Public Use3
Specifications5
Summaries Of Product Characteristics6
Dred Installation Position6
Outline Of Dred Wiring6
Specifications Of Electrical Parts7
Parts For Demand Response7
Demand Response P.c. Board7
Operation Characteristic Curve26
Capacity Variation Ratio According To Outdoor Temperature26
Capacity Variation Ratio According To Pipe Length26
Refrigerant R410A27
Safety During Installation/Servicing27
Refrigerant Piping Installation27
Piping Materials And Joints Used27
Thicknesses Of Annealed Copper Pipes28
Joints28
Minimum Thicknesses Of Socket Joints28
Processing Of Piping Materials28
Dimensions Related To Flare Processing For R410A29
Dimensions Related To Flare Processing For R2229
Flare And Flare Nut Dimensions For R410A29
Flare Processing Dimensions29
Flare And Flare Nut Dimensions For R2230
Flare Connecting Procedures And Precautions30
Relations Between Flare Nut And Flare Seal Surface30
Tools31
Required Tools31
General Tools (Conventional Tools Can Be Used.)31
Recharging Of Refrigerant32
Configuration Of Refrigerant Charging32
Brazing Of Pipe33
Materials For Brazing33
Silver Brazing Filler33
Flux33
Brazing34
Characteristics Required For Flux34
Types Of Flux34
Brazing Method To Prevent Oxidation34
Construction Views35
Wiring Diagram36
Outdoor Unit36
Important Notice38
Wiring Between Dred38
Connection Procedure38
Air Conditioner Demand Response39
Wiring Procedure39
Refrigerant Cycle Diagram41
Operation Data42
Control Block Diagram48
Outdoor Unit (Inverter Assembly)48
Operation Description50
Outline Of Air Conditioner Control50
Role Of Indoor Unit Controller50
Role Of Outdoor Unit Controller50
Basic Operation52
Operation Control52
Indoor Unit52
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
Changes In The Product And Components59
New Tools For R410A59
Accessory And Installation Parts60
Refrigerant Piping60
Installation Place60
Optional Installation Parts60
Necessary Space For Installation61
Upper Side View (Unit: Mm)61
Fixing Bolt Arrangement Of Outdoor Unit61
Side View (Unit: Mm)61
How To Remove The Front Panel62
Tightening Torque Of Flare Pipe62
Tightening Connection62
Refrigerant Piping Connection63
Evacuating63
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
Remote Control A-B Selection67
Setting The Auto Restart67
How To Diagnose The Trouble68
Discharging Method68
First Confirmation69
Confirmation Of Power Supply69
Confirmation Of Power Voltage69
Operation Which Is Not A Trouble69
Primary Judgment70
Judgment By Flashing Led Of Indoor Unit70
Self-Diagnosis By Remote Controller71
How To Use Remote Controller In Service Mode71
Caution At Servicing72
Judgment Of Trouble By Symptom78
Wiring Failure (Interconnecting And Serial Signal78
Outdoor Unit Does Not Operate78
Outdoor Unit Stops In A Little While After Operation Started78
Service Support Function (Led Display, Switch Operation)79
Operation Part79
Display Part79
Control P.c.b Mcc-507179
Trouble Diagnosis By Outdoor Led80
Case Thermo Operation, Power Supply Error81
Short-Circuit Of Compressor Drive Element81
Position Detection Circuit Error81
Current Detection Circuit Error81
Suction Temp. Sensor (Ts) Error82
Heat Exchanger Temp. Sensor (Te) Error82
Discharge Temp. Sensor (Td) Error82
Fan System Error82
Compressor System Error, Compressor Lock83
A Room Gas Side Temp. Sensor (Tga) Error84
B Room Gas Side Temp. Sensor (Tgb) Error84
C Room Gas Side Temp. Sensor (Tgc) Error84
D Room Gas Side Temp. Sensor (Tgd) Error84
Communication Error Between Mcus85
Compressor Lock85
Discharge Temp. Error85
Compressor Break Down86
Pmv Error For A Room86
Pmv Error For B Room86
Pmv Error For C Room86
Pmv Error For D Room87
Pmv Error For E Room87
High Pressure Sw System Error87
Before Troubleshooting89
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
Inverter Assembly97
Cdb P.c. Board99
Ipdu P.c. Board99
Replacement Of Reactor101
Reactor To Be Attached To The Inverter Assembly101
Fan Motor102
Compressor Assembly103
Removal Of Defective Compressor103
Fan Guard104
Fin Guard104
4-Way Valve Coil105
Te Sensor106
Ts Sensor106
Td Sensor106
To Sensor106
Tg Sensor107
Sensor Wiring Process107
Pressure Switch108
Demand P.c. Board109
Exploded Views And Parts List110