Table Of Contents - Mitsubishi Electric PQRY-P200YEM-A Service Handbook

Contents
1 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT .... 3
[1] Storage of Piping Material ................................................................. 4
[2] Piping Machining ............................................................................... 5
[3] Necessary Apparatus and Materials and Notes on Their Handling .. 6
[4] Brazing .............................................................................................. 7
[5] Airtightness Test ................................................................................ 8
[6] Vacuuming ........................................................................................ 8
[7] Charging of Refrigerant ..................................................................... 9
[8] Dryer ................................................................................................. 9
2 COMPONENT OF EQUIPMENT ........................................................... 10
[1] Appearance of Components ........................................................... 10
[2] Refrigerant Circuit Diagram and Thermal Sensor ........................... 18
[3] Electrical Wiring Diagram ................................................................ 20
[4] Standard Operation Data ................................................................ 26
[5] Function of Dip SW and Rotary SW ................................................ 30
[6] External Input/Output Specifications ............................................... 33
3 TEST RUN ............................................................................................. 34
[1] Before Test Run .............................................................................. 34
[2] Address Setting ............................................................................... 38
[3] Test Run Method ............................................................................. 43
4 GROUPING REGISTRATION OF INDOOR UNITS WITH M-NET
REMOTE CONTROLLER
CONTROL .............................................................................................. 50
5
[1] Control of Heat Source Unit ............................................................ 50
[2] Control Box Cooling System............................................................ 54
[3] Control of BC Controller .................................................................. 57
[4] Operation Flow Chart ...................................................................... 58
[5] List of Major Component Functions ................................................ 64
[6] Resistance of Temperature Sensor ................................................. 67
6 REFRIGERANT AMOUNT ADJUSTMENT ............................................ 68
[1] Refrigerant Amount and Operating Characteristics ........................ 68
[2] Adjustment and Judgement of Refrigerant Amount ........................ 68
TROUBLESHOOTING ........................................................................... 72
7
[1] Principal Parts ................................................................................. 72
[2] BC Controller Disassembly Procedure ........................................... 81
[3] Inverter and Compressor
[4] Trouble and Remedy of Remote Controller
[5] Self-diagnosis and Countermeasures Depending on the
Check Code Displayed ................................................................. 109
[6] LED Monitor Display ..................................................................... 132
8 PREPARATION, REPAIRS AND REFRIGERANT REFILLING
WHEN REPAIRING LEAKS ................................................................. 151
[1] Location of Leaks: Extension Piping or Indoor Units (When Cooling) ... 151
[2] Location of Leaks: Heat Source Unit (Cooling Mode) .................... 151
[3] Location of Leaks: Extension Piping or Indoor Units
(Heating Mode) ............................................................................. 152
[4] Location of Leaks: Heat Source Unit (When Heating)................... 152
9 CHECK THE COMPOSITION OF THE REFRIGERANT ..................... 153
0 DIFFERENCES BETWEEN THE PREVIOUS REFRIGERANT
AND THE NEW REFRIGERANT ......................................................... 155
[1] Chemical Characteristics .............................................................. 155
[2] Chances in Composition ............................................................... 155
[3] Pressure Characteristics ............................................................... 156
A REFRIGERATOR OIL .......................................................................... 157
[1] Refrigerator Oil with HFC Based Refrigerants .............................. 157
[2] Influence of Contaminants ............................................................ 157
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