Carrier 40QSM009DS Service Manual page 3

14.4 Operation Modes and Functions ............................................................................................... 80
16. Troubleshooting ....................................................................................................................................... 86
16.1 Indoor Unit Error Display ........................................................................................................... 87
16.2 Outdoor unit error display .......................................................................................................... 88
For 9K-24K outdoor unit: ................................................................................................................... 88
For 36K-48K Outdoor Unit ................................................................................................................. 88
Outdoor check function...................................................................................................................... 89
16.3 Diagnosis and Solution .............................................................................................................. 91
16.4 Main parts check ..................................................................................................................... 107