Mitsubishi Electric CITY MULTI PEFY Series, Техническое и сервисное руководство

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CONTENTS
HWE1804A GB
I
Features
[1] Features.................................................................................................................................... 1
II
Part Names and Functions
[1] Part Names and Functions ....................................................................................................... 2
1.Indoor (main) unit.................................................................................................................... 2
2.Remote controller ................................................................................................................... 3
III
Specification
[1] Specification ............................................................................................................................. 5
1.Specification ........................................................................................................................... 5
2.Electrical parts specifications.................................................................................................. 6
IV
Outlines and Dimensions
[1] Outlines and Dimensions.......................................................................................................... 7
V
Wiring Diagram
[1] Wiring Diagram ....................................................................................................................... 11
VI
Refrigerant System Diagram
[1] Refrigerant System Diagram .................................................................................................. 13
VII
Troubleshooting
[1] Troubleshooting ...................................................................................................................... 14
1.Check methods..................................................................................................................... 14
2.DC fan motor (fan motor/indoor control board)..................................................................... 18
3.Setting of address switch...................................................................................................... 19
4.Voltage test points on the control board ............................................................................... 20
5.Setting of dip-switch (at delivery).......................................................................................... 21
6.Function setting .................................................................................................................... 21
7.Selecting external static pressure......................................................................................... 22
8.Enabling the function to prevent cold draft (during heating operation) ................................. 22
9.Setting addresses ................................................................................................................. 23
10.Function the LED of the indoor unit service board.............................................................. 23
VIII
Disassembly Procedure
[1] Disassembly Procedure (PEFY-P36, 48NMHU-E-OA)........................................................... 24
1.Control box ........................................................................................................................... 24
2.Fan and fan motor ................................................................................................................ 25
3.LEV, thermistor (Liquid/Gas piping temperature detection).................................................. 26
4.Drain pump ........................................................................................................................... 27
5.Heat exchanger .................................................................................................................... 28
6.Control box inside layout ...................................................................................................... 30
7.Thermistor position ............................................................................................................... 31
[2] Disassembly Procedure (PEFY-P72, 96NMHU-E-OA)........................................................... 32
1.Control box ........................................................................................................................... 32
2.Fan and fan motor ................................................................................................................ 33
3.LEV, thermistor (Liquid/Gas piping temperature detection).................................................. 35
4.Drain pump ........................................................................................................................... 36
5.Heat exchanger .................................................................................................................... 38
6.Control box inside layout ...................................................................................................... 40
7.Thermistor position ............................................................................................................... 41