Contents - Pioneer YN018GMFI16M2D Service Manual

1. Product Specifications ................................................................................................................................................................. 3
2. Indoor Unit Combination .............................................................................................................................................................. 4
3. Suggested Indoor Unit Model Numbers ...................................................................................................................................... 5
4. Dimension Of Outdoor Unit ......................................................................................................................................................... 6
5. Refrigerant Cycle Diagram .......................................................................................................................................................... 7
6. Installation Details ....................................................................................................................................................................... 8
6.1 Wrench torque sheet for installation ..................................................................................................................................... 8
6.2 Connecting the cables .......................................................................................................................................................... 8
6.3 Pipe length and the elevation ................................................................................................................................................ 8
6.4 Installation for the first time ................................................................................................................................................... 8
6.5 Adding the refrigerant after running the system for many years ......................................................................................... 10
6.6 Re-installation while the indoor unit need to be repaired .................................................................................................... 11
6.7 Re-installation while the outdoor unit need to be repaired .................................................................................................. 12
7. Electronic Function .................................................................................................................................................................... 13
7.1 Abbreviation ........................................................................................................................................................................ 13
7.2 Electric control working environment. ................................................................................................................................. 13
7.3 Main Protection ................................................................................................................................................................... 13
7.4 Control and Functions ......................................................................................................................................................... 15
8. Wiring Diagrams ........................................................................................................................................................................ 19
9. Troubleshooting ........................................................................................................................................................................ 31
9.1Safety ................................................................................................................................................................................... 31
9.2 Indoor Unit Error Display ..................................................................................................................................................... 32
9.3 Outdoor Unit Display ........................................................................................................................................................... 34
9.4 Diagnosis and Solution ....................................................................................................................................................... 38
9.5 Trouble Criterion Of Main Parts. ......................................................................................................................................... 82
10. Disassembly Instructions ...................................................................................................................................................... 93
Model: YN018GMFI16M2D (Dual Split) .......................................................................................................................... 93
Model: YN027GMFI16M3D (Triple Split) ...................................................................................................................... 100
Model: YN030GMFI16M3D (Triple Split) ...................................................................................................................... 107
Model: YN036GMFI16M4D (Quad Split) ....................................................................................................................... 115
11. Exploded View .................................................................................................................................................................... 122

CONTENTS