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Thread: mep 803 help

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    Default mep 803 help

    I bought my second mep 803 and hooked it up to my house and it ran all the lights like my first unit , but i turned on my ac and the unit quit producing power , the i re closed the AC Circuit Interrupter and it produced power again to just kick power off again, turned air conditioning off and it run fine and produced power, my other generator would run the whole house , the generator would be working a little hard but (could tell there was a load) would run for days like this. This new generator never pulled down a load it just stops the producing power never heard it strain before power loss , seen videos of these generators pulling 15kw and still had more , anyone know the problem or how to fix it Thanx in advance
    Clay

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    What is the measured amps you’re attempting to draw on the generator?
    Did you load bank it first to see how much power you can produce up to its rated output?


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    Could be due to poor contacts in the S6 or S8 switch's. Poor contact in either of those can cause the Overload sensor to think there is an overload and cause an overload and the contactor to open.
    With the set OFF I'd suggest exercising both switch's by moving them thru all their positions many times and then return them to the desire positions. Then retry the generator with the load. If that doesn't help get yourself a can of Deoxit. With the set OFF spray some Deoxit in the switch's and exercise them to clean the contacts. Then retry the generator with the load.
    If that doesn't help then there may be an electrical issue with the Overload sensing circuit.

    S6 & S8 are the AM/VM switch on the front panel and the Voltage Reconnection switch inside the control cube and the back wall.
    Last edited by kloppk; 10-23-2019 at 07:11.
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    MEP-831A Remote Start / Governor Controller Kits https://www.steelsoldiers.com/showth...49#post2245549

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    I second Kurt's suggestions on the switches. I've seen this same problem several times and cleaning the switches has worked every time for me!
    Getting to the guts of the AC select switch requires removing the front cover, so my suggestion is to clean and exercise the AM/VM switch and just give the AC select switch a good workout ( with the machine off ) and see if that fixes it. If not, remove the cover and go after the AC switch with contact cleaner.

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    Also worth popping the top covers off and checking all the wire terminals. Look for anything loose or discolored.
    Chris Medico
    MEP-003a (sold), MEP-803a, MEP-802a, & MEP-831a

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    Or critters. And they CAN lead to such problems as what you have.

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    Quote Originally Posted by Guyfang View Post
    Or critters. And they CAN lead to such problems as what you have.
    Mothballs in battery tray and behind operator panel help


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    Mice love to build nests right where the wires junction coming from the gen head. I'd pull the top off and inspect wiring and clean the switches with Deoxit. This has fixed several units with problems for me.

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    So when it disconnects do you get the fault indicator OVERLOAD? If so, then everyone's comment on cleaning the switches is correct.

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    Deoxit is the savior of many anomalies. Get a few cans for your stash.

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