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MULTI OUTDOOR UNITS
SERVICE MANUAL
Multi zone
CONDENSING UNITS
Revision C: ODMI-E-1606
Model Numbers:
MCH2U-18PHH2 MCH3U-27PHH2 MCH4U-36PHH2
MCH5U-48PHH2
WARNING
Installation MUST conform with local building codes or, in the absence of local
codes, with the National Electrical Code NFPA70/ANSI C1-1993 or current edition
and Canadian Electrical Code Part1 CSA C.22.1.
The information contained in the manual is intended for use by a qualified service
technician familiar with safety procedures and equipped with the proper tools and
test instruments
Installation or repairs made by unqualified persons can result in hazards to you
and others.
Failure to carefully read and follow all instructions in this manual can result in
equipment malfunction, property damage, personal injury and/or death.
Table of Contents
1.
Indoor Unit Combination
2.
Suggested Indoor Unit Model Numbers
3.
Dimension Of Outdoor Unit
4.
Refrigerant Cycle Diagram
5.
Installation Details
6.
Electronic Function
7.
Wiring Diagrams
8.
Trouble Shooting
9.
Disassembly Instructions
Summary of Contents for MCH2U-18PHH2
Page 3: ...3 MCH4U 36PHH2 WD30 metal plate 118 MCH5U 48PHH2 WE30 metal plate 125...
Page 23: ...23 7 Wiring Diagrams 7 1 Wiring diagram of 1 drive 2 outdoor MCH2U 18PHH2...
Page 24: ...24 7 2 Wiring diagram of 1 drive 3 outdoor MCH3U 27PHH2...
Page 25: ...25 7 3 Wiring diagram of 1 drive 4 outdoor MCH4U 36PHH2...
Page 26: ...26 7 4 Wiring diagram of MCH5U 48PHH2...
Page 31: ...31 PCB board of MCH5U 48PHH2...
Page 32: ...32 IPM board of MCH5U 48PHH2...
Page 44: ...44...
Page 46: ...46 Operating Standby Pic 2 IPM for 2 zone 3 zone...
Page 54: ...54 8 4 1 7 Over voltage or under voltage protection diagnosis and solution...
Page 59: ...59...
Page 61: ...61 Operating Standby Pic 2 IPM board for 2 zone 3 zone...
Page 64: ...64...
Page 68: ...68 IPM board for 2 zone 3 zone...
Page 70: ...70 IPM board for 4 zone...
Page 73: ...73 Two ports of the inductance Inductance...
Page 76: ...76 Vs Vcc Vsp FG...
Page 78: ...78...
Page 79: ...79...
Page 81: ...81...
Page 82: ...82...
Page 84: ...84...
Page 85: ...85...
Page 87: ...87...
Page 98: ...98 6 EXV check Disconnect the connectors...
Page 100: ...100 Red Blue Red Yellow...
Page 101: ...101 Brown Orange...
Page 102: ...102 Brown White...
Page 112: ...112 Screws of front panel Screws of right rear panel Screws of front panel...
Page 120: ...120 Screws of front panel Screws of right rear panel Screws of front panel...