Haier MRV III-C PLUS (DC) Bruksanvisning

Haier Luftkonditionering MRV III-C PLUS (DC)

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SYJS-11-2016 REV.A Edition: 2016-11

Service Manual

MRV III-C PLUS (DC)

CONTENTS

1. General Information ................................................................................................................................................. 1

1.1 Indoor / outdoor models ......................................................................................................................................1

1.2 External appearance ...........................................................................................................................................2

1.3 Recommend combination of outdoor units ..........................................................................................................7

1.4 Products code explanation ..................................................................................................................................8

1.5 Capacity range ....................................................................................................................................................9

1.6 Features ............................................................................................................................................................10

2. Specication ..........................................................................................................................................................14

3. Dimension..............................................................................................................................................................44

4. Piping Diagram ......................................................................................................................................................45

5. Wiring Diagram ...................................................................................................................................................... 47

6. Capacity Calculation Due to Capacity Modication Coefcient .............................................................................49

7. Operation Range ...................................................................................................................................................54

8. Sound Level...........................................................................................................................................................55

9. Outdoor Piping Installation ....................................................................................................................................56

9.1 Precaution .........................................................................................................................................................56

9.2 Piping system ....................................................................................................................................................65

9.3 Branch pipe .......................................................................................................................................................73

9.4 Gather pipe ....................................................................................................................................................... 75

9.5 Pipe installation .................................................................................................................................................77

9.6 Leakage testing .................................................................................................................................................78

9.7 Evacuation ......................................................................................................................................................... 79

9.8 Check valve operation .......................................................................................................................................79

9.9 Additional refrigerant charging ........................................................................................................................... 80

9.10 Utilized tool comparisons for MRVIII R22 and R410A .....................................................................................81

9.11 Trial running .....................................................................................................................................................82

10. Outdoor Wiring Installation ..................................................................................................................................83

10.1 Wiring system ..................................................................................................................................................84

10.2 Space for power cable and communication wires ...........................................................................................85

10.3 Trial operation and the performance ...............................................................................................................87

11. Outdoor Unit PCB ................................................................................................................................................99

12. Dip Switch Setting .............................................................................................................................................100

13. Monitor Tools .....................................................................................................................................................104

14. Outdoor Unit Control..........................................................................................................................................110

14.1 Compressor startup control ...........................................................................................................................110

14.2 Compressor operation control .......................................................................................................................110

14.3 Fan motor control ..........................................................................................................................................110

14.4 Defrosting control ..........................................................................................................................................110

14.5 Oil return operation control ............................................................................................................................ 111

14.6 Sensor backup running ................................................................................................................................. 111

15. Failure Code ...................................................................................................................................................... 112

16. Troubleshooting ................................................................................................................................................. 119

Appendix I: Sensor Resistance Table ......................................................................................................................147

Appendix II: Enthalpy-Humidity Chart......................................................................................................................156