3 PB
TABLE OF CONTENTS
Replace 9k, 12k, and18k Cassette Type unit Compressor and Motor‑ 117
Replace 9k, 12k, and18k Cassette Type unit Compressor and Motor‑ 118
Replace 24k and 36k Cassette Compesdsor and Motor Type unit Compressor and Motor‑ 119
COMPONENTS TESTING ‑ 120
Compressor‑ 120
Fan Motor‑ 121
EEV Stepper Coil‑ 122
Check Refrigerant System (Outdoor) ‑ 123
Test System Flow (Outdoor) ‑ 124
Check Fuse and Capacitor‑ 125
7k Indoor Wall Mount Printed Circuit Board ‑ 126
Ducted 9,12, and 18k Ducted Indoor Units Control Board‑ 127
Ducted 24k and 9‑24k Cassette Indoor Units Control Board‑ 128
18k Outdoor Main Printed Circuit Boards‑ 129
24k Outdoor Main Printed Circuit Board‑ 131
24k Outdoor Drive Printed Circuit Board‑ 132
36k/ 42k Outdoor Main Printed Circuit Board‑ 133
36k/ 42k Outdoor Drive Printed Circuit Board‑ 134
WIRING DIAGRAMS‑ 135
7k Wall Units‑ 135
Ducted Indoor Units 9k, 12k, and 18k‑ 136
9k‑36k Indoor Cassette Units‑ 137
18k Outdoor Units‑ 138
24k Outdoor Units‑ 139
36k Outdoor Units‑ 140
42k Outdoor Units‑ 141
APPENDIX‑ 142
Reference Sheet of Celsius and Fahrenheit‑ 142
Pipe Expanding Method‑ 143
Resistance Table Coil And Room Sensor‑ 144
Resistance Table Of Outdoor Compressor Temperature Sensor‑ 145
Available Accessories‑ 146
Interactive Parts Viewer‑ 147
Limited Warranty‑ 147
Friedrich Authorized Parts Depots‑ 148