Contents
4-5 Setting to Cool or Heat only mode, checking and Cool/Heat modes operation test 4-39
4-6 Fault Diagnosis by Symptom
............................................................................................4-41
4-6-1 Indoor.......................................................................................................................... 4-41
4-6-2 Outdoor unit is not powered on – Initial diagnosis
............................................ 4-45
4-6-3 Checking Outdoor Controller
................................................................................. 4-46
4-6-4 Outdoor unit fan error.............................................................................................. 4-47
4-6-5 Compressor startup error, Compressor lock error, Compressor rotation error
4-48
4-6-6 IPM Over current error ............................................................................................. 4-49
4-6-7 Checking Temperature sensor
................................................................................ 4-50
4-7 PCB Inspection
................................................................................................................... 4-52
4-7-1 Cautions for Part Replacement
............................................................................... 4-52
4-7-2 Procedure
................................................................................................................ ... 4-52
5. PCB Diagram
······························································································································· 5-1
5-1 Indoor unit .............................................................................................................................. 5-1
5-2 Outdoor PCB Diagram
........................................................................................................ 5-13
6. Wiring Diagram
·························································································································· 6-1
6-1 Indoor Unit ............................................................................................................................. 6-1
6-2 Outdoor unit
..........................................................................................................................6-6
7. Preference Sheet
·························································································································· 7-1
7-1 Selecting Area for Installation ..............................................................................................7-1
7-1-1 Indoor Unit
..................................................................................................................... 7-1
7-1-2 Outdoor Unit
........................................................ .......................................................... 7-2
7-1-3 Remote Control Unit
.................................................................................................... 7-2
7-2 Connecting Up and Purging the Circuit
.............................................................................. 7-3
7-3 Refrigerant Refill
................................................................................................................... 7-4
7-4 Refrigerant Adjustment
....................................................................................................... 7-5
7-5 Flare Nut Fixing Torque
........................................................................................................ 7-5
7-6 "Pump down" Procedure
...................................................................................................... 7-6
7-7 Index of Model Name
............................................................................................................ 7-7
7-8 Refrigerating Cycle Diagram
............................................................................................. 7-10
7-9 Pressure & Capacity mark
.................................................................................................. 7-14
7-10 The abbreviated technology words & the definition of technology terms
................ 7-14
7-11 Q & A for Non-trouble
........................................................................................................ 7-15
7-12 Common sense of refrigeration
....................................................................................... 7-18
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