WF 8955 converter 12 volt fue panel problem

First, you need to post this to Tech Issues.

I would suspect a grounding issue or bad connections. Something is back-feeding somewhere. It may not necessarily be in the fuse panel.

Is the load side of the 12 volt fuses not connected (or whatever it feeds is turned off). If so, it is normal to see voltage there. The red LED that lights when the fuse is blown is connected to the + side of the fuse and feeds the voltage thru (with a diode voltage drop) when there is no load.

I don’t know why one of your leds would light with a good fuse. I have seen them not in line with the fuses (so it lights when the fuse above or below is bad).

Try a 5 watt 120 ohm pullup resistor between the malfunctioning pilot lamp and chassis negative. Yes this is utter overkill for the job. Dirt cheap and it works. I just arrived at the medpad and I am pooped. Too much hours in the avion-compactor. The VOLARIS waiting area in Tijuana was one hundred five degrees.

I will check out the grounding in that circuit

I don’t see how you can have a grounding problem. That led that is lit is not a pilot light.
A grounding problem would make the led light and blow the fuse.

Seeing voltage on the others with no fuse, no led lit, and no load is normal

Is there something that isn’t working?

Wiring diagram

I would reach out to bestconverter.com and consider an upgrade. They can probably help you with your fuse board problem as well. We send brand new units with the 8955 to be upgraded with the 4655L mba. It comes with the wildcat pendant that fits the 4600 also and doesn't need spicing. Plugs right in.

The red light is a diode (LED) and will block a bit of voltage and will pass a bit of current to indicate a bad fuse when the circuit tries to draw some current.

Check the fuse with your meter and re-install a good fuse. This should give full voltage and no light.

A simple voltmeter voltage check across that fuse should kill the LED 5-volts potential is more than enough to fire a 3mm LED with resistor.

I’d disconnect converter from distribution panel bus bar and measure DC output kfnconverter. Should be over 13 volts. If not troubleshoot converter.