Table Of Contents - Mitsubishi Electric PUHY-P200 Service Handbook

Contents
1 Read Before Servicing ................................................................
[1] Items to Be Checked ..............................................................
[2] Necessary Tools and Materials ..............................................
[3] Piping Materials ......................................................................
[4] Storage of Piping Material ...................................................... 10
[5] Piping Machining .................................................................... 11
[6] Brazing.................................................................................... 12
[7] Airtightness Test ...................................................................... 13
[8] Vacuuming .............................................................................. 13
[9] Vacuum Drying........................................................................ 14
[10] Changing Refrigerant.............................................................. 15
[11] Remedies to be taken in case of a refrigerant leak................ 15
[12] Characteristics of the Conventional and the New Refrigerants .. 16
[13] Notes on Refrigerating Machine Oil........................................ 17
2 Restrictions .................................................................................. 18
[1] Electrical Work & M-NET control ............................................ 18
[2] Types of Switch Setting and Address Setting ........................ 19
[3] Examples of system connection ............................................ 21
[4] Restrictions on Refrigerant Piping Length.............................. 35
3 Components of the Outdoor Unit ................................................ 37
[1] Appearance of the Components and Refrigerant Circuit........ 37
[2] Control Box ............................................................................ 43
[3] Circuit Board .......................................................................... 45
4 Remote Controller ........................................................................ 49
[1] Functions and Specifications of MA and ME Remote Controllers.... 49
[2] Group Setting and Interlocking Settings that are Made on
the ME Remote Controller .................................................... 50
[3] Interlocking Setting that is Made on the MA Remote Controller ...... 53
[4] Switching to the built-in Thermo on the remote controller ...... 54
5 Electrical Wiring Diagram ............................................................ 55
[1] PUHY-P200, P250, P300, P350, P400YGM-A / PUY-P200, P250, P300, P350YGM-A .. 55
[2] PUHY-P450, P500, P550, P600, P650YGM-A .............................. 56
[3] Power Dispatching Extension Unit for the Transmission Lines ........ 57
6 Refrigerant Circuit ........................................................................ 58
[1] Refrigerant Circuit Diagram .................................................... 58
[2] Functions of Principal Parts.................................................... 62
7 Control.......................................................................................... 64
[1] Dip Switch Functions and Their Factory Settings .................. 64
[2] Controlling the Outdoor Unit .................................................. 69
[3] Operation Flow Chart ............................................................ 76
8 Test Run ...................................................................................... 81
[1] Check Items before Test Run.................................................. 81
[2] Test Run Method .................................................................... 81
[3] Operating Characteristics and Refrigerant Amount................ 82
[4] Adjustment and Judgment of Refrigerant Amount ................ 82
[5] Refrigerant Volume Adjustment Mode Operation .................. 84
[6] Symptoms that do not Signify Problems ................................ 86
[7] Standard Operation Data (Reference Data) .............................. 87
9 Troubleshooting ............................................................................ 95
[1] Check Code List .................................................................... 95
[2] Responding to Error Display on the Remote Controller ........ 98
[3] Investigation of Transmission Wave Shape/Noise .................. 131
[4] Troubleshooting of Principal Parts .......................................... 134
[5] Refrigerant Leak .................................................................... 151
[6] Compressor Replacement Instructions (only P450-P650 types).... 153
[7] Collecting the Cooling Liquid from the Accumulator (Only P450-P650 types) .. 154
0 LED display .................................................................................. 155
[1] LED Monitor Display .............................................................. 155
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