MEP-1050 Fault Code 3665

[peapvp]

@peapvp - Thank you for your reply. Do you mean I should test all wiring before reconnecting this cut / broken wire shown in my above photos?

Do you think this cut / broken wire could be the reason I have the 3665 fault code?

I am certain that this wire and the burnt wire are just the tip of the iceberg.
And yes all wiring issues known and unknown at this point are causing the error(s)

 

[Guyfang]

You just need to take your time and test everything twice.

 

[BadAmish]

@peapvp & @Guyfang - Thank you. I was able to spend some time last evening looking into the wiring and control panel. Here are some photos of what I found:

The wire that we've been referring to as burned appears on closer inspection to be gnawed or chewed and / or possible just rough-handled. I'm sorry these photos are blurry. I took them with my phone and I thought they looked better on the little phone screen and it wasn't until I closed everything back up and reviewed them on a computer monitor that I could see they are kind of poor quality.







What do you folks think? If it was burned, wouldn't it be the whole wire and not just some spots? Regardless, I understand that this needs repairing or replacing. Speaking of repairing or replacing, what is recommended? Do I source a replacement wire or fabricate one myself?

I removed the connector with the broken / cut wire P1-SHLD1 wire and look what I found:



I straightened that pin, I think it is the "S" pin on the J1 connector.

I also re-attached the previously broken wire to see if any errors went away. They did not.

I took some somewhat better photos of the screens. In a few you may notice that the "Battle Short" mode is active and that is because I was testing to see if indeed that switch was working.

One thing I noticed is that when I power up the MEP-1050 initially after re-attaching the batteries the oil pressure indicator is lit - not greyed out - and then goes greyed out after about 3-5 seconds.





Here are some other control screen photos including the one with the firmware versions. I do not know if firmware is a thing that gets updated at all or not on these generators.



What is engine oil rifle pressure? That is a strange term to me.



I knew the fuel level was low, but I was sure that there was some in the tank. Is there a minimum amount I should have for testing / repairing this unit?



Engine coolant temp 1 sensor cut high voltage. Voltage above normal or shorted to high source. I guess this says it.

 

[Guyfang]

Thats mice damage. I would buy the same gauge wire, and fix it. You do not have to find the same type wire used in the set. Just the same gauge. If you have one place mouse damage, you probably have more.