Question about Inverter KEB COMBIVERT F5

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Keb inverter f5 error e.pu - Inverter KEB COMBIVERT F5

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F5 e-pu error could be caused by blocked cooling fan, cleaning/replacement should solve the problem

Posted on Feb 06, 2015

  • mntech1 Feb 06, 2015

    This is only true for the old inverters that have a 3 wire fan. The third wire is a fan sensing circuit. If the proper replacement fan is not used, the sensing signal will be missing or incorrect causing the E.PU error to remain.



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General powerkeb inverter f5 error e.pu - icon1.png stage failure.

Most likely will need to replace the power stage or inverter.

Posted on May 08, 2014


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SOURCE: F5 keb inverter problem

i have a prblem in the F5 keb combivert it's show Error
E.OC & E.puci & E.Puch could you please advice us with the proper solution

Posted on Apr 11, 2010

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E.PU error

E.PU is a general power stage failure.

Without knowing the part number of the actual inverter with the problem it is difficult to speculate what the actual problem is.

One thing to do is to check if the fan is operating. Some of the older F5 inverters utilized a feedback loop so that the inverter could tell if the fan was functioning properly. If the fan was not functioning the inverter would trip into E.PU.

May 26, 2014 | Inverter KEB COMBIVERT F5

1 Answer

E.pu error in keb f5 inverter. the part no. is 09.f5.a1d-3a4a, ver. 1.0, 1.5kw. when powering up the drive, it gives 560VDC. please recommend what the problem could be.

The E.pu error is a general power stage failure.
Typically means that the unit has a defective power stage that would need to be replaced.
If it is an old inverter(early 2000's) there is a possibility that it could be a cooling fan problem since at that time there was a three wire fan used. May be able to replace the fan (must obtain from KEB) but there may still be problems with power stage. If it is from early 2000's then you might be better off replacing the unit with new current version.

Mar 10, 2014 | Inverter KEB COMBIVERT F5

1 Answer

ERROR power unit

General error of the power stage in the inverter. Part# and ser# of inverter would help troubleshoot better.

Maybe a problem with cooling fan if it is an older inverter. Typically when the error E.PU appears, it is too late. Power stage maybe damaged and would need to be replaced.

Nov 26, 2013 | Inverter KEB COMBIVERT F5

1 Answer

Error e.pu keb inverter

General power stage failure.

Most likely will need to replace the power stage or inverter.

Oct 03, 2013 | Inverter KEB COMBIVERT F5

1 Answer

Ai have the problem em keb inverter , the E.Pu

E.Pu means there is a problem with the power stage. Perhaps your cooling fans are clogged and not spinning.

Hard to say with out knowing what the part# of the inverter is.

Apr 28, 2011 | Inverter KEB COMBIVERT F5

1 Answer

I have a proble with keb f5 inverter its capacitors and rectfier bridge was damage i changed it but now it gives an error E.PU. plz suggest me the solution.a thick film 05.f0.0019 alo seems to be damage.

Most likely when the DC bus capacitors and input rectifier were damaged, it also damaged the circuit board.

Wiser to replace inverter or send it in to a KEB facitlity to be repaired.

Sep 21, 2010 | Inverter KEB COMBIVERT F5

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