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EnzoColorado's avatar
EnzoColorado
Explorer II
Dec 09, 2019

Yamaha Generator question

I'm brand new to using generators.

A few months ago I bought a new Yamaha EF2000ISV2 generator. When I hooked it up to my travel trailer and try to run the microwave, the light in the microwave flickers and I can hear the sound from the microwave is lower and fluctuate compared to when connected to a outlet. I tried both the smart throttle setting and the full setting, both result in the same thing. I also noticed when the microwave is on, the generator's motor's pitch and frequency seems to be lower. The microwave also doesn't seem to heat up food much. Is there something wrong with the generator or am I not using it correctly? n

35 Replies

  • "the time so everything is on propane"

    The converter is not on propane. So that plus the MW can overload the generator.

    TV sets that are "off" are actually still on, but on standby, which can add a little. Electric heater? Hairdryer? Wall warts? It all adds up.
  • Voltage does sag a bit toward maximum output on these generators.
    To isolate the issue turn ALL breakers off except the main and dedicated microwave circuit.
    Measure and post the voltage at the breaker. Might need true RMS meter.
  • I'm curious what this thread comes up with. I get the same thing with my Honda eu2000i and the generator. I can hear the microwave running slower than normal and the interior light is dimmer as well. It doesn't matter if I switch the eco throttle off, nor does it seem to matter if I flip the breaker on the charger. I'm boondocking at the time so everything is on propane.
  • The micro and battery charger (if batts are down) both have large inrushes of current upon startup. Gen is working hard so what you see is to be expected.
    I would monitor the voltage to make sure it doens't dip too much, which will kill the mocro.

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