Haier MRV5-H - Table of Contents

CONTENTS
1. Cautions in Repair ...................................................................................................................1
1.1Safety Cautions ........................................................................................................................1
1.2 Post Repair Cautions...............................................................................................................3
1.3 Inspection after Repair ............................................................................................................5
2. General Information ................................................................................................................6
2.1 Energy Saving .........................................................................................................................6
2.2 Multi-Link .................................................................................................................................7
2.3 Comfort ....................................................................................................................................7
2.3.1 Move Eye Intelligent System (Optional) ...............................................................................7
2.3.2 Precise Temperature Control at ±1F ....................................................................................7
2.4 Feature....................................................................................................................................8
2.5 Products Lineup ..................................................................................................................10
2.5.1 Nomenclature .....................................................................................................................10
2.5.2 External Appearance ..........................................................................................................13
2.5.3 Combination of Outdoor Units ............................................................................................15
3. Refrigerant Circuit ................................................................................................................16
4. Functional Parts Layout ........................................................................................................28
5. Refrigerant Flow for Each Operation Mode .......................................................................30
6. Functions and Control ..........................................................................................................39
6.1 Startup ...................................................................................................................................39
6.1.1 Startup Procedure ..............................................................................................................39
6.1.2 Installation Check ...............................................................................................................39
6.1.3 Conguration Dip Switches ................................................................................................40
6.1.4 Power on ............................................................................................................................41
6.1.5 Search and Lock Outdoor \ Indoor Unit ..............................................................................41
6.1.6 Trial Operation and Parameters Record.............................................................................41
6.1.7 MRV 5-H System Startup Report .......................................................................................42
6.2 Outdoor Control Board Photo ...........................................................................................47
6.3 Outdoor PCB Dip Switch Setting ......................................................................................53
6.4 Outdoor System Control Function ....................................................................................61
7. Comissioning ........................................................................................................................70
7.1 Field Settings for Outdoor Unit ..........................................................................................70
7.1.1 Settings by DIP Switches ...................................................................................................70
7.2 Test Operation .....................................................................................................................78
7.2.1 Initial Power Up ..................................................................................................................78
7.2.2 Rated Operation .................................................................................................................79
7.2.3 Trial Operation Conrmation ..............................................................................................79
8. Service Diagnosis..................................................................................................................87
8.1 Error Code ............................................................................................................................87
8.2 Troubleshooting ..................................................................................................................92
8.2.1 Troubleshooting by Error Code ..........................................................................................92
8.2.2 Refrigerant charge check .................................................................................................141
8.2.3 4-Way Valve Check ..........................................................................................................142
8.2.4 4-Way Valve Function ......................................................................................................142
8.2.5 Fan Motor Detection Standard .........................................................................................143
9. Parts Replacement Instructions.........................................................................................145