Question about Coleman Powermate Powermate 5000W Generator

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I have cummins generator the voltage display on output can i soved the problem

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  • 54generator
    54generator May 11, 2010

    What kind of generator: portable, home standby, industrial?



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Somehow your post ended up in the wrong category. On some models, 67 indicates a failed inverter. To be more accurate, would need to ask again with correct model and spec numbers.

Posted on Aug 25, 2009


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Posted on Jan 02, 2017


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The problem is that the display that shows the voltage and frequency is blank. Is this something easy to repair? Can I use the generator without the display?

The generator should be ok to use with lighting and power tools and suchlike but with equipment incorporating computers and computer equipment it would be wise to get the displays fixed in order to be able to monitor the output and protect the equipment.

Not sure why the display won't work. Displays these days are essentially a low voltage device and so some sort of interface will be employed to reduce the voltage to a suitable level, unless the genny also has a 12 volt output and this is employed to drive the display. Unless you enjoy puzzles a circuit diagram will be necessary.

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    Did you get this fixed? this is an old post. If not visit www, (Cert Cummins Dealers) They can answer your questions.

    Most likely, rotor slip riings, brushes, control board (if no stator output)

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    I have an 8.5 onan diesel generator that idles fine but surges badly when the air conditioner is started - the motor races out of control - what could be wrong?

    Is it only when a load is on the unit? I am assuming the voltage output os correct and the HVAC is working properly on shore power and does not have a locked compressor. If it does there is too much demand on the generator and it cannot govern, if the HVAC and ouplut voltages are all good, make sure you have the right weight oil and level in. It sounds like a governor issue, or the engine is mechanically not provifing enough HP. More than likely a governor issue

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    Not sure what you mean "high voltage rpm power generator out", however many people have asked how to adjust the engine for proper voltage output. On generators with~out a voltage regulator, I adjust the engine RPM by using a digital voltage meter that has a Hz setting. Adjust the governor untill the meter displays 60 Hz. With the geneator producing 60 cycles, I know that the engine is turning 3600 rpm (the engine produces max hp when it is turning 3600 rpm). At this point, read the voltage output to verify that the range is between 115 ~ 120. On generators with a voltage regulator, verify/adjust that generator is producing 60 cycles then adjust voltage by turning screw at the regulator (some regulators are sealed with potting compound and can not be adjusted). If your power demands are not that great and you appliance can operate at 50 cycles, adjust governor as needed. Lowering to 50 cycles will also reduce output voltage. Good luck

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    I have a honda generator em2500x voltage problem

    My E2500 did this. Turned out to be dirt in the brush holders causing the
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    1 Answer

    67 votage display on generator output.

    Please stop making new problem threads each time you answer, instead post a comment to one of the 5 threads you already have open for this problem. It's getting hard to follow the conversation :-)

    OK, now to the problem. You say you have checked 67 volts is displayed on the generator output, I think this means that you see 67 volts on the control panel display when the generator is running. This can be several different problems:
    a) a bad CT/PT module that tells the controller the wrong voltage
    b) a bad A/D module inside the controller itself
    c) a bad voltage regulator

    Get a real DMM meter and measure the voltages at the top side of the output (large) circuit breaker of the generator. Put the black lead of the meter on the neutral wire and then measure to each of the phase wires on the circuit breaker. If you get normal voltages then you probably have a bad A/D, if you get 67 volts on all 3 phases you have some other problem.

    You still haven't told me what model/spec of generator this is, look on the data sticker on the generator cabinet.


    Dec 14, 2008 | Coleman Powermate Powermate 5000W...

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