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3 PB
TABLE OF CONTENTS
Malfunction of IDU Fan Motor U8‑ 122
Malfunction of Communication E6 ‑ 124
Malfunction of Power Supply from Indoor to Outdoor Unit‑ 125
Malfunction of Detecting Plate (WIFI) JF‑ 126
Indoor fan does not rotate and there is no Feedback‑ 127
Temperature sensor malfunction‑ 128
Malfunction diagnosis of startup failure‑ 129
Diagnosis of losing synchronism for compressor ‑ 130
9‑12k, 36k Diagnosis of overload and discharge malfunction‑ 131
18‑24k Diagnosis of overload and discharge malfunction‑ 132
Capacity Charging malfunction ‑ Outdoor unit‑ 133
9‑24k PM protection, phase current overcurrent ‑ 134
36k IPM Protection, Out‑of‑Step Fault, Compressor Phase Overcurrent‑ 135
High temperature and Overload Protection Diagnosis‑ 136
PFC (Correction Power Factor) Outdor Unit Malfuction‑ 137
Communication malfunction: (following AP1 for outdoor unit control board)‑ 138
High‑pressure Protection‑ 139
Troubleshooting for Malfunction without Active Error Code‑ 140
WIRING DIAGRAMS‑ 143
9‑12K Indoor Unit Wiring Diagram ‑ 143
18‑24k Indoor Unit Wiring Diagram‑ 144
36K Indoor Unit Wiring Diagrams ‑ 145
18‑24k Outdoor Unit Wiring Diagrams‑ 147
36k Outdoor Unit Wiring Diagrams‑ 147
PARTS CATALOG‑ 148
9K Indoor Unit ‑ 148
12k Indoor Unit‑ 150
18K Indoor Unit‑ 152
24K Indoor Unit‑ 154
36K Indoor Unit‑ 156
9K Outdoor Unit‑ 158
12k Outdoor Unit‑ 160
18k Outdoor Unit‑ 162
24k Outdoor Unit‑ 164
36k Outdoor Unit‑ 166
APPENDIX‑ 168
Appendix 1: Reference Sheet of Celsius and Farenheit‑ 168
Appendix 2: Configuration of Connection Pipe‑ 168
Appendix 3: Pipe Expanding Method‑ 169
LIMITED WARRANTY‑ 170
FRIEDRICH AUTHORIZED PARTS DEPOTS‑ 171
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