Table Of Contents - Pioneer WYB-GMFI SERIES Service Manual

16 and 19 seer versions dc inverter split wall-mounted ductless heat pumps

Table of Contents

1. Precaution ................................................................................................................................................. 1

1.1 Safety Precaution ........................................................................................................................ 1

1.2 Warning ....................................................................................................................................... 1

2. Function .................................................................................................................................................... 6

3. Dimension ................................................................................................................................................. 9

3.1 Indoor Units ................................................................................................................................. 9

3.2 Outdoor Units ............................................................................................................................ 12

4. Refrigerant Cycle Diagram ..................................................................................................................... 12

5. Wiring Diagram ....................................................................................................................................... 15

5.1 Indoor Units ............................................................................................................................... 15

5.2 Outdoor Units ............................................................................................................................ 16

6. Installation details ................................................................................................................................... 18

6.1 Wrench torque sheet for installation .......................................................................................... 18

6.2 Connecting the cables ............................................................................................................... 18

6.3 Pipe length and the elevation .................................................................................................... 19

6.4 Installation for the first time ....................................................................................................... 20

6.5 Adding the refrigerant after running the system for many years ................................................ 23

6.6 Re-installation while the indoor unit need to be repaired ........................................................... 23

6.7 Re-installation while the outdoor unit need to be repaired ......................................................... 26

7. Operation characteristics ....................................................................................................................... 28

8. Electronic function ................................................................................................................................. 29

8.1 Abbreviation .............................................................................................................................. 29

8.2 Display function ......................................................................................................................... 29

8.3 Main Protection ......................................................................................................................... 30

8.4 Operation Modes and Functions ............................................................................................... 31

9. Troubleshooting ...................................................................................................................................... 45

9.1 Indoor Unit Error Display ........................................................................................................... 45

9.2 Diagnosis and Solution .............................................................................................................. 46

CONTENTS