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Aux fault on Kohler generator 5ekd says 17.0 fault check engine

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More supports or if you consider diesel generator set in furture, please contact [email protected], or visit at:

Posted on Oct 30, 2019


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Wayne Holden

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SOURCE: What is the most likely cause of an Auxiliary Fault on a Kohler Generator (Model 30RZ62)?

Problem solved by poster. good work!

Posted on Oct 08, 2012


Wayne Holden

  • 512 Answers

SOURCE: kohler 30rz62 generator auxiliary fault

Already solved.

Posted on Oct 08, 2012

Wayne Holden

  • 512 Answers

SOURCE: kohler generator 30rz62 auxiliary fault

Fourth time. Already solved.

Posted on Oct 08, 2012

Wayne Holden

  • 512 Answers

SOURCE: no 12v output from aux terminals on a vfx 3648

Pretty sure it won't provide current to start anything. Just provides 12vdc at a low current to pull a relay in.
Manual say it is auto reset on the aux terminals for the generator start relay. 0.7 amps max.

If you still don't have the voltage there at the correct time (when called for), you unit is bad or has a fuse they don't mention in the manual. Remember!! This is a called for function so the voltage will not be there all the time, just when required as per the programming.

Posted on Nov 06, 2012

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Aux fault can be many things, if it failed to start you may get it. Try reseting and manually starting. See if it re-occurs while it is running or does it ever start and give error. I have seen this generator by a coolant level sending it is an auxillary fault

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Kohler 5E generator on my boat got wet there is no power at the 120 V. distribution panel now. Any ideas on where to start troubleshooting ?

  1. First you must clean it all, especialy the generator, windings, AVR etc. if it was wet with sea water (better do it with fresh water or electro-clean, than other liquids). Then you should dry it well (with a hot blower) for about, but not less than 24 hours, before starting.
  2. If you already started it wet, or it got wet while running, you may have some parts burned, with low insulation of cables, windings etc. Check the AVR, rings and brushes (if any) and other electronic boards for visualy burned elements or check the semiconductor elements (diodes and transistors) for proper qualities.
  3. You should check the gen. windings insulation resistence to hull (gen. iron) [all stator and rotor windings]. It should be more than 100 kOhm in order to let you start the generator motor.
  4. When dry and clean, with no burned elements you can start the engine. If it reaches its normal speed - measure the voltage on generator terminals, if it is OK check the connections (breakers, fuses) to the distribution panel. If it is very low under 30 V AC, the problem may be in AVR (Auto Voltage Reg. - Field DC supply)
  5. If the voltage is under 10 V AC, you may need to recharge the magnetic field with a 12 V battery connected shortly to field terminals - +/- respected.
If you fulfil these instructions and you need more help, please ask as an answer to this solution or on my e-mail: [email protected]
Please give some information about your generator: is it 5ECD, 5EKD or some other - then give some more details about it.

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