Mitsubishi Electric PUHY-RP750 Manuals

Manuals and User Guides for Mitsubishi Electric PUHY-RP750. We have 2 Mitsubishi Electric PUHY-RP750 manuals available for free PDF download: Service Handbook

Mitsubishi Electric PUHY-RP750 Service Handbook

Mitsubishi Electric PUHY-RP750 Service Handbook (307 pages)

Brand: Mitsubishi Electric | Category: Air Conditioner | Size: 11.03 MB

Table of Contents

Safety Precautions
2
Before Installing the Unit
5
Before the Test Run
7
Table of Contents
8
Read before Servicing
10
1 I Read before Servicing

12
- Read before Servicing
  12
- Necessary Tools and Materials
  13
- Pipe Processing
  14
- Sealing the Pipe Ends
  14
- Storage of Piping
  14
- Brazing
  15
- Air Tightness Test
  16
- Vacuum Drying (Evacuation)
  17
- Refrigerant Charging
  18
- Remedies to be Taken in Case of a Refrigerant Leak
  18
- Characteristics of the Conventional and the New Refrigerants
  19
- Notes on Refrigerating Machine Oil
  20
- Restrictions
  22
2 II Restrictions

24
3 III Outdoor Unit Components

66
- Outdoor Unit Components and Refrigerant Circuit
  66
- Front View of an Outdoor Unit
  66
- Control Box of the Outdoor Unit
  68
- Outdoor Unit Circuit Board
  69
  - M-NET Board
    70
  - INV Board
    71
  - Fan Board
    72
  - Noise Filter
    73
Remote Controller

74
Electrical Wiring Diagram

84
- Electrical Wiring Diagram of the Outdoor Unit
  86
- Electrical Wiring Diagram of Transmission Booster
  87
Refrigerant Circuit

88
- Refrigerant Circuit Diagram
  90
- Principal Parts and Functions
  91
Control

96
- Control
  98
- Functions and Factory Settings of the Dipswitches
  98
- Function of the Switch (Indoor Unit)
  101
- Controlling the Outdoor Unit
  104
  - Initial Control/Control at Start-Up
    104
  - Outline of Control Method
    104
  - Startup Sequence Rotation
    104
  - Bypass Control
    105
  - Compressor Frequency Control
    106
  - Controlling the Intermediate Pressure
    106
  - Controlling the Plate Heat Exchanger
    106
  - Controlling the Plate Heat Exchanger 2
    107
  - Defrost Operation Control
    107
  - Refrigerant Recovery Control
    108
  - Capacity Control of Outdoor Fan
    109
  - Control at Initial Start-Up
    109
  - Refrigerant Flow Control
    109
  - Emergency Operation Mode
    112
  - Starting the Emergency Operation
    112
  - Ending the Emergency Operation
    113
  - Operation Mode
    114
  - Mode Determination Flowchart
    116
- Operation Flow Chart
  116
  - Operations in each Mode
    118
  - Dry Operation
    120
Test Run Mode

122
Troubleshooting

158
- Error Code Lists
  160
- Responding to Error Display on the Remote Controller
  163
  - Serial Communication Error
    163
  - Discharge Temperature Fault
    164
  - Low Pressure Fault
    165
  - High Pressure/Intermediate Pressure Fault 1 (Outdoor Unit)
    166
  - High Pressure Fault 2 (Outdoor Unit)
    167
  - Refrigerant Overcharge
    167
  - Drain Sensor Submergence (Models with a Drain Sensor)
    168
  - Drain Sensor Submergence (Models with a Float Switch)
    169
  - Drain Pump Fault (Models with a Drain Sensor)
    170
  - Drain Pump Fault (Models with a Float Switch)
    171
  - Drain Sensor (Thd) Fault
    172
  - Water Leakage from Humidifier
    173
  - Water Supply Cutoff
    174
  - Open Phase
    175
  - Error Code 4106
    176
  - Transmission Power Supply Fault Error Detail Code FF (Outdoor Unit)
    176
  - Power Supply Signal Sync Error
    177
  - RPM Error/Motor Error
    177
  - Abnormal Bus Voltage Drop
    178
  - Abnormal Bus Voltage Rise
    179
  - VDC Error
    179
  - Logic Error
    180
  - Low Bus Voltage at Startup
    181
  - Heatsink Overheat Protection
    181
  - Overload Protection
    182
  - IPM Error
    182
  - ACCT Overcurrent Relay Trip
    183
  - DCCT Overcurrent Relay Trip
    183
  - Overcurrent Relay Trip
    183
  - Short-Circuited Ipm/Ground Fault
    183
  - Overcurrent Error Due to Short-Circuited Motor
    184
  - Heatsink Overheat Protection at Startup
    184
  - Return Air Temperature Sensor Fault
    185
  - Gas-Side Pipe Temperature Sensor Fault
    185
  - Intake Air Temperature Sensor Fault
    185
  - HIC Bypass Circuit Outlet Temperature Sensor Fault (Outdoor Unit)
    186
  - Discharge Temperature Sensor (TH4) Fault
    186
  - Accumulator Inlet Temperature Sensor (TH5) Fault
    186
  - HIC Circuit Outlet Temperature Sensor (TH6) Fault
    186
  - Heatsink Temperature Sensor (THHS) Fault
    187
  - High-Pressure Sensor Fault
    187
  - ACCT Sensor Fault
    188
  - DCCT Sensor Fault
    188
  - ACCT Sensor Circuit Fault
    189
  - DCCT Sensor Circuit Fault
    190
  - Open-Circuited Ipm/Loose ACCT Connector
    191
  - Faulty ACCT Wiring
    191
  - Loose Float Switch Connector
    192
  - Remote Controller Board Fault (Nonvolatile Memory Error)
    192
  - Remote Controller Board Fault (Clock IC Error)
    192
  - Indoor Unit Cleaning Operation Error
    193
  - Address Overlap
    193
  - Polarity Setting Error
    194
  - Transmission Processor Hardware Error
    195
  - Transmission Line Bus Busy Error
    196
  - Communication Error between Device and Transmission Processors
    196
  - No ACK Error
    197
  - Error Code 6607
    204
  - No Response Error
    205
  - MA Controller Signal Reception Error (no Signal Reception)
    206
  - MA Remote Controller Signal Transmission Error (Synchronization Error)
    207
  - MA Remote Controller Signal Transmission Error (Hardware Error)
    208
  - MA Controller Signal Reception Error (Start Bit Detection Error)
    209
  - Total Capacity Error
    210
  - Capacity Code Setting Error
    211
  - Wrong Number of Connected Units
    212
  - Address Setting Error
    213
  - Attribute Setting Error
    213
  - Error Code 7110/7111
    214
  - Connection Information Signal Transmission/Reception Error
    214
  - Remote Controller Sensor Fault
    214
  - Error Code 7113/7116/7117
    215
  - Function Setting Error
    215
  - REPLACE Unit Cleaning Setting Error
    215
  - Refrigerant Pipe Cleaning Has Not Been Completed
    215
  - Model Setting Error
    215
  - Incompatible Unit Combination
    216
  - Troubleshooting According to the Remote Controller Malfunction
    217
  - Outdoor Unit Stops at Times During Operation
    229
- Investigation of Transmission Wave Shape/Noise
  230
  - M-NET Transmission
    230
  - MA Remote Controller Transmission
    232
- Troubleshooting Principal Parts
  233
- Refrigerant Leak
  253
- Compressor Replacement Instructions
  255
- Plate Heat Exchanger ASSY Replacement Instructions
  257
- Troubleshooting Using the Outdoor Unit LED Error Display
  258
LED Monitor Display on the Outdoor Unit Board

260
- How to Read the LED on the Service Monitor
  262
  - LED Monitor Display on the Outdoor Unit Board
    262
  - Time Data Storage Function
    263
  - LED Monitor Display
    264
  - Data before Error
    265

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Mitsubishi Electric PUHY-RP750 Service Handbook

Mitsubishi Electric PUHY-RP750 Service Handbook (306 pages)

Brand: Mitsubishi Electric | Category: Air Conditioner | Size: 7.52 MB

Table of Contents

Safety Precautions
2
Before Installing the Unit
5
Electrical Work
6
Table of Contents
8
Read before Servicing
10
Read before Servicing
12
I Read before Servicing
12
Necessary Tools and Materials
13
Storage of Piping
14
Pipe Processing
14
Brazing
15
Air Tightness Test
16
Vacuum Drying (Evacuation)
17
Refrigerant Charging
18
Remedies to be Taken in Case of a Refrigerant Leak
18
Characteristics of the Conventional and the New Refrigerants
19
Notes on Refrigerating Machine Oil
20
Restrictions

22
Outdoor Unit Components

64
- Outdoor Unit Components and Refrigerant Circuit
  66
- Refrigerant Circuit
  67
- Control Box of the Outdoor Unit
  68
- Outdoor Unit Circuit Board
  69
  - Inv Board
    71
  - Fan Board
    72
  - Noise Filter
    73
Remote Controller

74
Electrical Wiring Diagram

84
- Electrical Wiring Diagram of the Outdoor Unit
  86
- Electrical Wiring Diagram of Transmission Booster
  87
Refrigerant Circuit

88
- Refrigerant Circuit Diagram
  90
- Principal Parts and Functions
  91
Control

96
- Functions and Factory Settings of the Dipswitches
  98
- Controlling the Outdoor Unit
  104
  - Emergency Operation Mode
    112
  - Operation Mode
    114
- Operation Flow Chart
  116
Test Run Mode

122
Troubleshooting

158
- Error Code Lists
  160
- Responding to Error Display on the Remote Controller
  163
  - Error Code 4106
    176
  - Error Code 6607
    204
  - Error Code 7110/7111
    214
  - Error Code 7113/7116/7117
    215
- Investigation of Transmission Wave Shape/Noise
  230
- Troubleshooting Principal Parts
  233
- Indoor Unit
  251
- Refrigerant Leak
  253
- Compressor Replacement Instructions
  255
- Troubleshooting Using the Outdoor Unit LED Error Display
  258
LED Monitor Display on the Outdoor Unit Board

260
- How to Read the LED on the Service Monitor
  262

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