7.5 Monthly Routine Inspection Items ...................................................................................................... 42
7.6 Routine Inspection Items (Semi-annually) .......................................................................................... 43
7.7 System Diagnosis Testing ..................................................................................................................... 43
7.8 Electrical Maintenance ........................................................................................................................ 44
7.9 Controller Connections Maintenance ................................................................................................. 44
7.10 Filters Maintenance Guidance ............................................................................................................. 45
7.11 Maintenance Guidance for Fan Kit ...................................................................................................... 47
7.12 Cooling System Maintenance .............................................................................................................. 48
8 Troubleshooting ............................................................................................................................................... 49
8.1 Troubleshooting................................................................................................................................... 49
8.2 Fan Troubleshooting ............................................................................................................................ 50
8.3 Fault Diagnosis and Handling of Electronic Expansion Valve .............................................................. 50
8.4 Fault Diagnosis and Handling of the Air Conditioning System ............................................................ 50
Appendix I: System Diagram.................................................................................................................................... 52
Appendix II: Wiring Diagram(VRC100 Unit) ............................................................................................................. 53
Appendix III:Wiring Diagram(VRC101 Unit)............................................................................................................. 54
Appendix IV:Wiring Diagram(VRC102 Unit) ............................................................................................................ 55
Suppliers Declaration of Conformity ....................................................................................................................... 56
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