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Table Of Contents - Mitsubishi Electric PUHZ-RP250YHA2 Service Manual

Outdoor unit

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Installation manual (13 pages)

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Technical data manual (126 pages)

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Manual (36 pages)

Table Of Contents

Table of Contents

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Table of Contents

Table Of Contents1

Service Manual1

Reference Manual2

Safety Precaution3

Cautions Related To New Refrigerant3

Cautions For Service4

Additional Refrigerant Charge4

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

Combination Of Indoor And Out Door Units7

Synchronized Twin, Triple And Quadruple System7

Multi Distribution Pipe7

Specifications8

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

M-Net Wiring Method17

M-Net Address Setting18

Refrigerant Address Setting18

Regulations In Address Settings18

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

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

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

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

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

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

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

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

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Table of Contents

Troubleshooting