Service Manual

SiUS071735E
Table of Contents ii
1. Safety Cautions........................................................................................... v
1.1 Warnings and Cautions Regarding Safety of Workers................................. v
1.2 Warnings and Cautions Regarding Safety of Users....................................vii
2. Icons Used .................................................................................................. x
Part 1 List of Functions ................................................................... 1
1. Functions.....................................................................................................2
Part 2 Specifications ....................................................................... 3
1. Specifications ..............................................................................................4
Part 3 Printed Circuit Board Connector Wiring Diagram ................ 7
1. Indoor Unit...................................................................................................8
1.1 FDMQ09/12/15/18/24RVJU ......................................................................... 8
2. Wired Remote Controller...........................................................................10
2.1 BRC1E73 ................................................................................................... 10
3. Wireless Remote Controller Receiver .......................................................11
3.1 BRC082A43 ............................................................................................... 11
4. Outdoor Unit..............................................................................................12
4.1 RX09/12RMVJU ......................................................................................... 12
4.2 RX15/18/24RMVJU .................................................................................... 13
Part 4 Functions and Control......................................................... 14
1. Main Functions..........................................................................................15
1.1 Temperature Control .................................................................................. 15
1.2 Frequency Principle.................................................................................... 15
1.3 Fan Speed Control for Indoor Unit ............................................................. 17
1.4 Program Dry Operation .............................................................................. 18
1.5 Clock and Calendar Setting
(With Wired Remote Controller BRC1E73) ................................................ 19
1.6 Schedule TIMER Operation
(With Wired Remote Controller BRC1E73) ................................................ 21
1.7 Drain Pump Control.................................................................................... 24
1.8 Hot Start Control (In Heating Operation Only)............................................ 26
1.9 Other Functions.......................................................................................... 27
2. Control Specification .................................................................................28
2.1 Mode Hierarchy .......................................................................................... 28
2.2 Frequency Control...................................................................................... 29
2.3 Controls at Mode Changing/Start-up.......................................................... 31
2.4 Discharge Pipe Temperature Control......................................................... 33
2.5 Input Current Control.................................................................................. 34
2.6 Freeze-up Protection Control ..................................................................... 35
2.7 Heating Peak-cut Control ........................................................................... 36
2.8 Outdoor Fan Control................................................................................... 37