Table Of Contents - Mitsubishi Electric PUHZ-RP250YHA2 Service Manual

Table of Contents

Table Of Contents1
Service Manual1
Reference Manual2
Safety Precaution3
Cautions Related To New Refrigerant3
Cautions For Service4
Additional Refrigerant Charge4
Service Tools4
Precautions When Reusing Existing R22 Refrigerant Pipes5
Connecting A New Air Conditioner To Existing R22 Refrigerant Pipes5
Cautions For Refrigerant Piping Work6
Thickness Of Pipes6
Dimensions Of Flare Cutting And Flare Nut6
Flare Cutting Dimensions6
Features7
Combination Of Indoor And Out Door Units7
Synchronized Twin, Triple And Quadruple System7
Multi Distribution Pipe7
Specifications8
Data9
Adjusting The Amount Of Refrigerant9
Compressor Technical Data9
Noise Criterion Curves9
Electrical Parts Specifications10
Standard Operation Data11
Outlines And Dimensions12
Puhz-Rp200Yha212
Puhz-Rp250Yha212
Wiring Diagram13
Puhz-Rp200Yha2 Puhz-Rp250Yha213
Wiring Specifications14
Field Electrical Wiring14
Power Wiring Specifications14
Synchronized Twin And Triple System Electrical Wiring14
Separate Indoor Unit/ Outdoor Unit Power Supplies15
Simultaneous Twin/Triple/Four System15
Indoor – Outdoor Connecting Cable16
Power Supply16
M-Net Wiring Method17
M-Net Address Setting18
Refrigerant Address Setting18
Regulations In Address Settings18
M-Net Wiring18
Refrigerant System Diagram19
Refrigerant Recovering (Pump Down)20
Unit Replacement Operation20
Start And Finish Of Test Run20
Replacement Operation Procedures20
Troubleshooting21
Check Point Under Test Run21
Before Test Run21
Operating Procedures22
Test Run23
How To Proceed "Self-Diagnosis"24
When A Problem Occurs During Operation24
Self-Diagnosis During Maintenance Or Service24
Remote Controller Diagnosis25
Remote Controller Self-Diagnosis Result25
Switch To The Remote Controller Self-Diagnosis Mode25
Malfunction-Diagnosis Method By Wireless Remote Controller26
Output Pattern A27
Output Pattern B27
Errors Detected By Indoor Unit27
Errors Detected By Unit Other Than Indoor Unit27
Discharge Temperature27
Self-Diagnosis Action Table28
Temperature Of Heatsink31
Abnormal If Heatsink Thermistor(Th8)31
Power Module31
Outdoor Fan Motor31
Overheat Protection32
Compressor Overcurrent Interruption32
Low Pressure(Rp200)32
Compressor Current Sensor Error Or Input Current Error32
Remote Controller Transmission Error/Signal Receiving Error(E4)33
Remote Controller Control Board33
Indoor/Outdoor Unit Communication Error34
Non Defined Error Code34
Serial Communication Error34
Pipe Temperature35
Cooling Mode35
Heating Mode35
Address Duplicate Definition35
Communication Error With Communication Processor36
No Ack Signal36
Troubleshooting By Inferior Phenomena38
M-Net No Response38
"PLEASE WAIT" Is Kept Being Displayed on the Remote Controller40
Symptoms: Nothing Is Displayed On The Remote Controller41
Before Repair44
Frequent Calling From Customers44
How To Check The Parts48
Check Method Of Dc Fan Motor49
Fuse Check49
How To Check The Components50
Low Temperature Thermistors50
High Temperature Thermistor50
Linear Expansion Valve51
Output Pulse Signal And The Valve Operation51
Linear Expansion Valve Operation51
Operation Summary Of The Linear Expansion Valve51
How To Attach And Detach The Coil Of Linear Expansion Valve53
How To Detach The Coil53
How To Attach The Coil53
How To Attach And Detach The Coil Of Linear Expansion Valve(Rp250)54
Emergency Operation55
Emergency Operation Procedure55
Releasing Emergency Operation55
Operation Data During Emergency Operation56
Test Point Diagram Outdoor Controller Circuit Board57
Outdoor Noise Filter Circuit Board58
Outdoor Power Circuit Board59
Brief Check Of Power Module59
Function Of Switches, Connectors And Jumpers60
Function Of Connectors And Switches61
Special Function61
Low-Level Sound Priority Mode61
How To Wire61
Display Function Of Inspection For Outdoor Unit62
Normal Condition62
Abnormal Condition62
Outdoor Unit Operation Monitor Function64
Digital Indicator Led1 Working Details64
When The Display Blinks64
Condensing Temperature72
Function Setting73
Unit Function Setting By The Remote Controller73
Function Selections73
Meaning Of "Function Setting"73
Selecting Functions Using The Wired Remote Controller75
Selecting Functions Using The Wireless Remote Controller77
Function Selection Of Remote Controller78
Change Language Setting78
Function Limit78
Use Of Automatic Mode Setting78
Function Selection Flowchart79
Monitoring The Operation Data By The Remote Controller80
How To "Monitor The Operation Data"80
Operating The Service Inspection Monitor80
Canceling The Monitoring The Operation Data80
Request Code List81
Detail Contents In Request Code85
Relay Output State85
Data Display85
Fan Control State86
Actuator Output State86
Error Content86
Contact Demand Capacity87
External Input State87
Outdoor Unit -– Capacity Setting Display87
Outdoor Unit – Setting Information87
Outdoor Unit Switch Setting Display (Sw1 To Sw10, Except Sw3)88
Indoor Unit – Model Setting Information89
Indoor Unit – Capacity Setting Information89
Wireless Pair No. (Indoor Control Board Side89
Easy Maintenance Function90
Easy Maintenance Information (Unit)90
Switching To Maintenance Mode90
Fixed Hz Operation90
Data Measurement91
Compressor Information91
Indoor Unit Information91
Outdoor Unit Information91
Guide For Operation Condition92
Check Points92
Disassembly Procedure93
Removing The Service Panel And Top Panel93
Removing The Fan Motor (Mf1, Mf2)93
Removing The Electrical Parts Box93
Removing The Thermistor94
Removing The 4-Way Valve Coil95
Removing The 4-Way Valve And Bypass Valve95
Removing The Linear Expansion Valve95
Removing The High Pressure Switch96
Removing The Compressor (Mc)96
Removing The Accumulator(Rp200)97
Removing The Power Receiver(Rp250)97