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SK2018 PCG(H)-V/P-AECM-001
Wiring Diagram ......................................................................................................................................................... 46
Standard S Control PCB ....................................................................................................................................... 46
Master Slave Networking Wiring Diagram .......................................................................................................... 47
Configuration Settings ............................................................................................................................................... 48
Fan Coil Unit ON/OFF .......................................................................................................................................... 49
Auto Restart ........................................................................................................................................................ 49
Control Logic For 2-Pipe System ................................................................................................................................. 50
With Valve Configuration .................................................................................................................................... 50
Without Valve Configuration .............................................................................................................................. 54
Control Logic For 4-Pipe System ................................................................................................................................. 56
Sleep Mode ................................................................................................................................................................ 58
Auto Fan Speed .......................................................................................................................................................... 58
Modulating Valve Control Under Energy Saving Mode .............................................................................................. 59
Louver ........................................................................................................................................................................ 59
Buzzer....................................................................................................................................................................... 59
Auto Restart ............................................................................................................................................................. 59
On/Off Switch On LED Display Panel ........................................................................................................................ 59
Drain Pump .............................................................................................................................................................. 60
Float Switch .............................................................................................................................................................. 60
Electric Heater Safety Switch ................................................................................................................................... 60
Low Temperature Protection of Indoor Coil in Winter ............................................................................................. 60
LED Display and Error Description ........................................................................................................................... 62
LED Display on Master/Slave connection ................................................................................................................. 63
E. Networking System .................................................................................................................................................... 64
Master-Slave Network ................................................................................................................................................ 64
Master Control Unit Settings ............................................................................................................................... 64
Master – Slave Network Setup ............................................................................................................................ 65
Master – Slave Communication Method ............................................................................................................. 67
Open Modbus protocol ............................................................................................................................................... 68
F. Control Specifications: Flexible Function PCB – NA-EC-W1 Control ............................................................................. 71
Features ...................................................................................................................................................................... 71
I/O Port Definitions ..................................................................................................................................................... 71
Onboard configuration ............................................................................................................................................... 71
Wiring Diagrams ......................................................................................................................................................... 72
Standard W Control PCB ...................................................................................................................................... 72
AECM-W1 unit with AC/EC thermostat wiring diagram ...................................................................................... 73
Control Logic Specification .......................................................................................................................................... 74
Unit Power ON/OFF ............................................................................................................................................. 74
Alarm Protection and Error Display ..................................................................................................................... 74
Drain-Pump Operation......................................................................................................................................... 74
Swing and Louver Control .................................................................................................................................... 74
Modulating Signal Input ...................................................................................................................................... 74
Electrical Heater Operation ................................................................................................................................. 74
Low Temperature Protection of Indoor Coil in Winter ........................................................................................ 74
LED Display and Error Description .............................................................................................................................. 75
