Every time pin change, power off and power on the unit.Then power off the unit and power on again,
the system will entet the operation of "Wiring Error Check", After 3 minutes stand-by, the unit starts
for automatic wiring checking.
LED
Status
SW1-1
OFF
OFF
ON
1
2
3
OFF
ALL Flashing
ALL ON
ON
FLASHING
FLASHING
ON
FLASHING
FLASHING
Only one LED flashing
DIP Switches Settings of SW1
SW1-2
SW1-3
SW1-4
OFF
OFF
OFF
Normal Operating(Default)
ON
OFF
OFF
Manually Forced Cooling
ON
ON
ON
IDU&ODU Wiring Error Check
4
5(ATW)
/
ON
/
ON
/
/
Description
Message
Unit not connected
Automatic checking impossible,all
units connect wrong
All Units connected correctly
ON:unit connect correctly
FLASHING:unit connect
wrong,need to change the wiring
manually between 2,3
OFF :ATW unit connect wrong
ON:unit connect correctly
FLASHING :unit connect
wrong,need to change the wiring
manually between 2,3
Abnormal