MEP803a Overload and % Load Meter Not Registering

[scorcher]

Read through a lot of the posts already about overload. Just looking to get some perspective. I was running a couple of RVs with three air conditioners total. Seemed to be running at about 60% load consistently. Ran like this for three days. Yesterday, started getting overloads after running about 15 minutes. No rhyme or reason. Also, the % Load Meter would not register even after resetting and then restarting genset. Outside temps were in the low 90's. Generator sits in a shipping container and runs with the doors open. New to the forum and not as technical as most here.

1. Could this have been an anomoly due to temperature?

2. Is there anything beyond the reset for the warnings on the front panel that I should do?

3. I ordered some contact cleaner and will exercise and clean the AM/VM switch once I head back up to the location where the genset is stored.

Thanks for any insight.

 

[Light in the Dark]

What voltage and phase is your machine currently set to? Have you exercised the AM/VM AND Voltage Selection Switch (in the back of the operator control cube) a few dozen times? You need to do both, especially when the contact cleaner comes.... but just do the test now in exercising both pretty well (with the machine OFF!). Restart and see if the condition is still present. If you are getting info on the gauges at all, I would put money on corrosion buildup in the terminals. But rotating switches doesn't cost you anything to do!

 

[scorcher]

What voltage and phase is your machine currently set to? Have you exercised the AM/VM AND Voltage Selection Switch (in the back of the operator control cube) a few dozen times? You need to do both, especially when the contact cleaner comes.... but just do the test now in exercising both pretty well (with the machine OFF!). Restart and see if the condition is still present. If you are getting info on the gauges at all, I would put money on corrosion buildup in the terminals. But rotating switches doesn't cost you anything to do!

Volts: L3-L1
Phase: 1

Will definitely exercise the switches and clean them.

Thanks!

 

[Light in the Dark]

Ok so a pretty standard 240V setup. Yeah just rotate the switches a bunch in both directions, as many times as you can stand. Even without the contact cleaner, the movement of the contacts might show you progress.