Table Of Contents - Hitachi RCUE40AG2 Service Manual

Contents
Content
1. Product range and specifi cations ............................................................................ 11
1.1. General data for RCUE40~400AG2 ..................................................................................................... 12
1.2. General data for RHUE40~240AG2 ..................................................................................................... 16
2. Test run ....................................................................................................................19
2.1. Check before test run ........................................................................................................................... 20
2.2. Test run method and check .................................................................................................................. 22
2.3. Restart of Test Run ............................................................................................................................... 25
2.4. Instruction at delivery............................................................................................................................ 27
2.5.Warning & Cautions .................................................................................................................................. 28
3 Electrical Wiring Diagram ........................................................................................31
3.1. Power Wiring Diagram .......................................................................................................................... 32
3.2. Power Wiring Diagram (FAN) ............................................................................................................... 37
3.3. Control PCB (PCBc) ............................................................................................................................. 38
3.4. Input / Output PCB (PCBd)................................................................................................................... 40
3.5. Power Wiring Diagram (MCB Option) ................................................................................................... 43
3.6. Diagram abbreviations descriptions ..................................................................................................... 48
4. Control system ........................................................................................................49
4.1. List of Main Control Function ................................................................................................................ 50
4.2. Water control ........................................................................................................................................ 52
4.3. Compressor control ............................................................................................................................. 53
4.4. Current limit control .............................................................................................................................. 54
4.5. Reverse protection control.................................................................................................................... 55
4.6. Restart control after power failure ........................................................................................................ 56
4.7. Operation error/wrong setting prevention control [40 - 40] ................................................................. 57
4.8. Forced capacity control ........................................................................................................................ 57
4.9. Second water temperature setting........................................................................................................ 58
4.10. Heat storage operation by external order ............................................................................................. 4.10. Heat storage operation by external order ............................................................................................. 4.10. Heat storage operation by external order
4.11. Operation by DC24V input (Remote Control) ....................................................................................... 65
4.12. Installation of switch for snow measure (Fan manual operation) ......................................................... 68
4.13. Switch for confi rmation of high pressure cut......................................................................................... 69
4.14 Antifreeze control in winter ................................................................................................................... 4.14 Antifreeze control in winter 4.14 Antifreeze control in winter ...................................................................................................................
4.15. Saving energy priority mode, silence priority mode (night shift), only cooling ...................................... 70
4.16. Defrost (only air-cooled heat pump type) ............................................................................................. 72
4.17. Thermo off selection function ............................................................................................................... 75
pag. 5
SMGB0003 rev.0 - 10/2006
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