Mitsubishi Electric CITY MULTI PFFY-W20VCM-A, Техническое и сервисное руководство

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CONTENTS
HWE18170 GB
I
Features
[1] Features.................................................................................................................................... 1
II
Components and Functions
[1] Components and Functions...................................................................................................... 2
III
Specfications
[1] Specifications............................................................................................................................ 3
1.Specfications .......................................................................................................................... 3
2.Electrical component specifications........................................................................................ 5
IV
Outlines and Dimensions
[1] Outlines and Dimensions.......................................................................................................... 6
V
Wiring Diagram
[1] Wiring Diagram ....................................................................................................................... 10
VI
Refrigerant System Diagram
[1] Refrigerant system diagram.................................................................................................... 11
VII
Troubleshooting
[1] Troubleshooting ...................................................................................................................... 12
1.Check methods..................................................................................................................... 12
2.DC fan motor (fan motor/indoor control board)..................................................................... 15
3.Setting of address switch...................................................................................................... 16
4.Voltage test points on the control board ............................................................................... 17
5.Setting of Dip-switch (at delivery) ......................................................................................... 18
6.Function setting .................................................................................................................... 18
7.Selecting the external static pressure................................................................................... 19
8.Setting addresses ................................................................................................................. 20
9.Setting of intermittent fan control .......................................................................................... 20
10.Function the LED of the indoor unit service board.............................................................. 20
11.Instructions for debris removal operation............................................................................ 21
12.Instructions for the air vent operation ................................................................................. 21
VIII
Disassembly Procedure
[1] Disassembly Procedure.......................................................................................................... 22
1.Control box ........................................................................................................................... 22
2.Thermistor (Intake air) .......................................................................................................... 23
3.Drain pan .............................................................................................................................. 24
4.Thermistor (Water inlet / Water outlet temperature detection).............................................. 25
5.Fan and fan motor ................................................................................................................ 26
6.Bearing ................................................................................................................................. 27
7.Heat exchanger (Pressure sensor and FCV)........................................................................ 28
8.Control box inside layout ...................................................................................................... 31
9.Sensor position ..................................................................................................................... 32
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