Table Of Contents - Mitsubishi Electric PUMY-P250YBM Technical & Service Manual

Table of Contents

Table Of Contents1
Safety Precaution2
Cautions Related To New Refrigerant2
Cautions For Units Utilizing Refrigerant R410A2
Preparation Before The Repair Service2
Cautions For Service3
Additional Refrigerant Charge3
Service Tools3
Precautions For Salt Proof Type "-Bs" Model3
Cautions For Refrigerant Piping Work4
Thickness Of Pipe4
Dimensions Of Flare Cutting And Flare Nut4
Flare Cutting Dimensions4
Tools For R410A5
Overview Of Units6
System Construction6
Connectable Indoor Unit Lineup6
System Construction (Branch Box System)7
System Construction (Mixed System)8
System Specifications9
Outdoor Unit9
Method For Identifying9
Operating Temperature Range9
Specifications10
Data11
Selection Of Cooling/Heating Units11
Capacity Of Indoor Unit11
Cooling Calculation11
Heating Calculation12
Temporary Selection Of Indoor Units12
Total Indoor Units Capacity12
Selection Of Outdoor Unit12
Correction By Temperature13
Indoor Unit Temperature Correction13
Outdoor Unit Temperature Correction13
Standard Capacity Diagram15
Pumy-P250Ybm15
Total Capacity Of Indoor Units(Kw)15
Correcting Capacity For Changes In The Length Of Refrigerant Piping19
Capacity Correction Curve19
Correction Of Heating Capacity For Frost And Defrosting20
Method For Obtaining The Equivalent Piping Length20
Correction Factor Diagram20
Noise Criterion Curves21
Standard Operation Data (Reference Data)21
Outlines And Dimensions22
Wiring Diagram23
Necessary Conditions For System Construction24
Transmission System Setup24
Refrigerant System Diagram25
Connection Without Branch Box25
Connection With Branch Box26
In Case Of Using 1-Branch Box26
In Case Of Using 2-Branch Boxes26
In Case Of Using 3-Branch Boxes26
Mixed System27
Branch Box Pipe Size27
Brazing27
Different-Diameter Joint27
System Control28
Example For The System28
Example Of An M-Net Remote Controller System28
Group Operation28
Name, Symbol And The Maximum Remote Controller Units For Connection29
Longest Transmission Cable Length29
Same As Above29
Name, Symbol, And The Maximum Units For Connection31
Example Of An Ma Remote Controller System32
Standard Operation32
Operation Using 2 Remote Controllers32
Example Of A System Using Branch Box And A-Control Indoor Unit36
Troubleshooting40
Checkpoints For Test Run40
Procedures Before Test Run40
Test Run For Wired Remote Controller40
Countermeasures For Error During Test Run41
Self-Diagnosis Function41
Serial Communication Error42
040342
Diagnosis Of Defects42
110243
130245
High Pressure Trouble47
Superheat Due To Low Discharge Temperature Trouble49
Refrigerant Shortage Trouble51
150151
Closed Valve In Cooling Mode53
Freeze Protection Of Branch Box Or Indoor Unit54
4-Way Valve Trouble In Heating Mode55
Compressor Current Interruption (Locked Compressor)56
410056
Compressor Overcurrent Interruption58
421058
Voltage Shortage60
Overvoltage60
Pam Error60
Heat Sink Temperature Trouble62
Power Module Trouble Or Overcurrent Trouble63
Fan Trouble (Outdoor Unit)64
440064
Compressor Temperature Thermistor (Th4) Open/Short65
510165
Suction Pipe Temperature Thermistor (Th6) Open/Short66
510266
Outdoor Liquid Pipe Temperature Thermistor (Th3) Open/Short67
510567
Ambient Temperature Thermistor (Th7) Open/Short68
510668
Hic Pipe Temperature Thermistor (Th2) Open/Short69
510969
Heat Sink Temperature Thermistor(Th8) Open/Short70
511070
High Pressure Sensor (63Hs) Trouble71
520171
Low Pressure Sensor (63Ls) Trouble72
520272
Current Sensor Trouble73
530073
Duplex Address Error74
660074
Transmission Processor Hardware Error75
Transmission Bus Busy Error76
660376
Signal Communication Error With Transmission Processor77
660677
No Ack Error78
660778
No Response Frame Error82
660882
Ma Communication Receive Error83
6831,683483
Ma Communication Send Error85
683385
Total Capacity Error87
710087
Capacity Code Error88
710188
Connecting Unit Number Error89
710289
Address Setting Error90
710590
Incompatible Unit Combination Error92
713092
Remote Controller Diagnosis93
The Following Symptom Do Not Represent Trouble (Emergency)93
Internal Switch Function Table94
Outdoor Unit Input/Output Connector96
State (Cn51)96
Auto Change Over (Cn3N)96
Silent Mode/Demand Control (Cn3D)96
How To Check The Parts97
Check Method Of Dc Fan Motor98
How To Check The Components99
Thermistor Feature Chart99
Low Temperature Thermistors99
Medium Temperature Thermistor99
High Pressure Sensor100
Comparing The High Pressure Sensor Measurement And Gauge Pressure100
High Pressure Sensor Configuration (63Hs)100
Low Pressure Sensor101
Comparing The Low Pressure Sensor Measurement And Gauge Pressure101
Low Pressure Sensor Configuration (63Ls)101
Test Point Diagram102
Outdoor Multi Controller Circuit Board102
Outdoor Power Circuit Board103
Brief Check Of Power Module103
M-Net Power Circuit Board104
Outdoor Noise Filter Circuit Board105
Outdoor Unit Functions106
Electrical Wiring111
Overview Of Power Wiring111
Wiring Of Main Power Supply And Equipment Capacity111
Wiring Diagram For Main Power Supply111
When Power Is Supplied To Outdoor Unit And Branch Box Separately112
When Power Is Supplied To Branch Box From The Outdoor Unit112
Cross Section Area Of Wire For Main Power And On/Off Capacities113
When Power Is Supplied Separately113
Connect To Branch Box (Pac-Mk·bc)113
Connect To Connection Kit (Pac-Lv11M)113
Design For Control Wiring114
Wiring Transmission Cables114
Selection Number Of Control Wires114
Types Of Control Cables114
Example External Wiring Diagram For A Basic System115
Example Of System When Using An M-Net Controller115
Example Of System When Using A Branch Box115
Obtaining Electrical Characteristics Of The Power Multi Series System116
Procedure For Obtaining Total Power Consumption116
Method Of Obtaining Total Current116
Method Of Obtaining System Power Factor116
Refrigerant Piping Tasks117
Refrigerant Piping System117
Selecting The Refrigerant Branch Kit118
Select Each Section Of Refrigerant Piping118
Precautions Against Refrigerant Leakage124
Confirming Procedure Of R410A Concentration124
Maximum Concentration124
Disassembly Procedure125
Removing The Panels On The Right Side Of The Unit125
Removing The Electrical Parts Box125
Removing The Thermistors126
Removing The 4-Way Valve Coil (21S4)127
Removing The 4-Way Valve127
Removing Bypass Valve Coil (Sv1 And Sv3) And Bypass Valve128
Removing The High Pressure Switch (63H)128
Removing Linear Expansion Valve (Lev-A, Lev-B)128
Removing The Reactor (Dcl, Dcl2)128
Removing The Compressor (Mc)129
Removing The Accumulator129
Remote Controller130
Remote Controller Functions130
Controller Interface130
Display131
Full Mode131
Basic Mode131
Menu Structure132
Main Menu132
Main Menu List134
Error Information139
Checking The Error Information140
Service Menu141
Maintenance Password Is Required141
Test Run142
Test Run Operation142
Auto Vane Check142
Function Setting145
Flow Of Function Selection Procedure146
Operating Instructions146
Select A Mode146
Select The Setting Number146
Going To The Function Select Mode147
Setting The Unit Number147
Selecting The Setting Number147
To Select Multiple Functions Continuously147
Error History148
Deleting The Error History148
16 Error History Records Will Appear148
Self-Diagnosis149
Resetting The Error History149
Malfunction-Diagnosis Method At Maintenance Service150
Remote Controller Check151
Remote Controller Check Results Screen151
Special Function Operation Setting152
How To Display The Setup Screen152
Home Screen152
Menu (User) Screen152
Group Setting153
Interlocked Lossnay153
Search Connection Information153
To Register Lossnay Units153