Mitsubishi Electric PQHY-P72TYHMU-A Manuals

Mitsubishi Electric PQHY-P72TYHMU-A Manuals

Manuals and User Guides for Mitsubishi Electric PQHY-P72TYHMU-A. We have 1 Mitsubishi Electric PQHY-P72TYHMU-A manual available for free PDF download: Service Handbook

Mitsubishi Electric PQHY-P72TYHMU-A Service Handbook

Mitsubishi Electric PQHY-P72TYHMU-A Service Handbook (415 pages)

Brand: Mitsubishi Electric | Category: Air Conditioner | Size: 14.56 MB

Table of Contents

Safety Precautions
2
Precautions for Handling Units for Use with R410A
4
Before Installing the Unit
5
Before Installing the Unit and Performing Electrical Work
6
Before the Test Run
7
Table of Contents
8
1 I Read before Servicing

12
I Read before Servicing

12
- Necessary Tools and Materials
  13
- Piping Materials
  14
- Storage of Piping
  16
- Pipe Processing
  16
- Brazing
  17
  - Use of Oxidized Solder for Brazing
    17
  - Use of Non-Oxidized Solder for Brazing
    17
- Air Tightness Test
  18
  - Halide Torch
    18
  - R22 Leakage Detector
    18
  - Recommended Vacuum Gauge
    19
- Vacuum Drying (Evacuation)
  19
- Refrigerant Charging
  21
- Remedies to be Taken in Case of a Refrigerant Leak
  21
  - Cylinder Color R410A Is Pink.
    21
  - Refrigerant Charging in the Liquid State
    21
- Characteristics of the Conventional and the New Refrigerants
  22
- Notes on Refrigerating Machine Oil
  23
- Restrictions
  24
2 II Restrictions

26
3 III Heat Source Unit Components

84
- Heat Source Unit Components and Refrigerant Circuit
  84
  - Front View of a Heat Source Unit
    84
  - Refrigerant Circuit
    85
- Control Box of the Heat Source Unit
  87
- Transformer Box
  89
- Heat Source Unit Circuit Board
  90
  - M-NET Board
    91
  - INV Board
    92
  - Relay Board
    94
  - Noise Filter
    95
- BC Controller Components
  97
- Control Box of the BC Controller
  100
- BC Controller Circuit Board
  101
4 Remote Controller

104
5 Electrical Wiring Diagram

114
6 Refrigerant Circuit

130
- Refrigerant Circuit Diagram
  132
  - Heat Source Unit
    132
  - BC Controller
    133
- Principal Parts and Functions
  135
- Indoor Unit
  138
7 Control

144
- Functions and Factory Settings of the Dipswitches
  146
- Controlling the Heat Source Unit
  152
  - Bypass Control
    153
  - Compressor Frequency Control
    154
  - Refrigerant Recovery Controls
    155
  - Capacity Control of Heat Exchanger
    155
  - Heat Source Unit Heat Exchanger Capacity Control Patterns
    156
  - Subcool Coil Control
    158
  - Refrigerant Flow Control
    158
  - Control at Initial Start-Up
    158
  - Flowchart of Initial Operation
    158
  - Emergency Operation Mode
    161
  - Control Method
    164
  - Cooling/Heating Circuit Control
    165
  - General Function of System Equipment
    165
  - Operation Mode
    166
  - Demand Control
    168
- Controlling BC Controller
  169
- Operation Flow Chart
  170
  - Mode Determination Flowchart
    170
  - Operations in each Mode
    172
  - Cooling Operation
    172
  - Heating Operation
    173
  - Dry Operation
    174
8 Test Run Mode

182
- Items to be Checked before a Test Run
  184
- Test Run Method
  185
- Operation Procedures
  185
- Operating Characteristic and Refrigerant Amount
  186
- Adjusting the Refrigerant Amount
  186
- Refrigerant Amount Adjust Mode
  191
- The Following Symptoms Are Normal
  195
- Standard Operation Data (Reference Data)
  196
- Troubleshooting
  234
9 IX Troubleshooting

236
- Error Code Lists
  236
- Responding to Error Display on the Remote Controller
  239
  - Error Code 0403
    239
  - Error Code 1102
    240
  - Error Code 1301
    241
  - Error Code 1302
    242
  - Error Code 1500
    243
  - Error Code 2000
    244
  - Error Code 2134
    245
  - Error Code 2135
    246
  - Error Code 2500
    247
  - Error Code 2502
    249
  - Error Code 2503
    251
  - Error Code 2600
    252
  - Error Code 2601
    252
  - Error Code 4102
    253
  - Error Code 4106
    255
  - Error Code 4115
    256
  - Error Code 4116
    257
  - Error Code 4220
    258
  - Error Code 4230
    262
  - Error Code 4240
    263
  - Error Code 4250
    264
  - Error Code 4260
    267
  - Error Codes 5101, 5102, 5103, 5104
    268
  - Error Codes 5102, 5103, 5104, 5105, 5106, 5107
    269
  - Error Code 5110
    270
  - Error Code 5201
    271
  - Error Code 5301
    272
  - Error Code 5701
    274
  - Error Code 6201
    274
  - Error Code 6202
    274
  - Error Code 6600
    275
  - Error Code 6601
    275
  - Error Code 6602
    276
  - Error Code 6603
    277
  - Error Code 6606
    277
  - Error Code 6607
    278
  - Error Code 6608
    287
  - Error Code 6831
    288
  - Error Code 6832
    289
  - Error Code 6833
    290
  - Error Code 6834
    291
  - Error Code 7100
    292
  - Error Code 7101
    293
  - Error Code 7102
    294
  - Error Code 7105
    295
  - Error Code 7107
    296
  - Error Code 7110
    297
  - Error Code 7113
    298
  - Troubleshooting According to Remote Controller Malfunction
    299
  - Flow Chart
    302
- Investigation of Transmission Wave Shape/Noise
  312
- Troubleshooting Principal Parts
  315
  - High-Pressure Sensor
    315
  - Low-Pressure Sensor
    316
  - Solenoid Valve
    317
  - Solenoid Valve Block
    318
  - Judgment Methods and Possible Failure Mode
    322
  - Heat Source Unit LEV Coil Removal Procedure
    323
  - Replacement Procedure
    325
  - Troubleshooting Principal Parts of BC Controller
    326
  - Pressure Sensor
    326
  - Temperature Sensor
    328
  - Troubleshooting Flow Chart for LEV Solenoid Valve
    330
  - Self-Diagnosis LED
    332
  - Troubleshooting Flow Chart for Solenoid Valve Body
    333
  - BC Controller Transformer
    336
  - Inverter
    337
  - Inverter Output Related Troubles
    339
  - Trouble Treatment When the Main Power Breaker Is Tripped
    340
  - Checking Procedure for Individual Components of Main Inverter Circuit
    341
  - INV Board External Diagram
    347
  - Control Circuit
    348
  - Control Power Source Function Block
    348
  - Troubleshooting Transmission Power Circuit of Heat Source Unit
    349
- Refrigerant Leak
  352
- Compressor Replacement Instructions
  356
- Water Heat Exchanger Assembly and Check Valve Replacement Instructions
  358
- Servicing the BC Controller
  362
  - Service Panel
    362
  - Control Box
    362
  - Thermistor
    363
  - Lev
    364
- Troubleshooting Using the Heat Source Unit LED Error Display
  365
10 LED Monitor Display on the Heat Source Unit Board

366
- How to Read the LED on the Service Monitor
  368
  - LED Monitor Display
    370
  - Current Data
    370
  - Error History
    381
  - Data on Indoor Unit System
    388
  - Setting Data
    395
  - Other Types of Data
    412

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