The IPLC M4 Cord has a unique diagnostic feedback LED which indicates live outlet or block heater problems. Each IPLC M4 Cord has a multicolored LED. Read below to learn more about the meaning for each state of the LEDs color.
![](http://www.iplc.com/images/help/m4/web-green-flashing-min.gif)
Flashing Green
Power is available no load attached.
![](http://www.iplc.com/images/help/m4/web-solid-green.jpg)
Solid Green
The load has been accepted and factory Gas profile engaged.
![](http://www.iplc.com/images/help/m4/web-solid-yellow.jpg)
Solid Yellow
The load has been accepted and factory Diesel profile engaged.
![](http://www.iplc.com/images/help/m4/web-flashing-red.gif)
Rapid Flashing Red
Short circuit in your equipment is detected no power is supplied.
![](http://www.iplc.com/images/help/m4/web-solid-red.jpg)
Solid Red
The load is over the programmed load limit, no power is supplied.