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pbdub asked

MultiPlus 24/3000/70-50 120v Shuts off under half Load 1500 - 200 Watts

I have 2 MultiPlus 24/3000/70-50 120v set up as split phase at 180. I have 1 air-conditioned connected to each line. I have ran both AC units in the past. One of the Mulitplus just started to shut off in 15 to 30 minutes of run time It's Line 1. I can still run the AC unit on line 2 without any issues. I even switched what AC run on each line and its still shutting down. I have updated the firmware in all the devices. What should I be looking for. Do I have a bad MutiPlus

Multiplus-II
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Mike Dorsett avatar image Mike Dorsett commented ·
do you see any error indication -flashing leds, victron connect report?
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pbdub answered ·

After analyzing the charts from VRM I noticed a voltage drop from 25~26 volts to like 15-~18 volt right before it shut off. I by-passed the circuit breaker and it solved the problem. Turn out the breaker was getting hot and causing resistance which in turn caused the voltage to drop and the MutiPlus to turn off.

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