Question about Inverter KEB COMBIVERT F5

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We have keb f5 series inverters in which i am facing problem of E PU. in running .after switch of main power some time fault get reset but comes again in running so, plz advice what to do?

Posted by shashikan936 on


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Most likely a problem with the power stage. Unit should be repaired.

Do you have the part# of the unit in question?

Posted on Dec 06, 2013


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SOURCE: prosine 2.5 fault 195

This internal fault code can mean so many things, but basically it more than likely has some internal parts that the smoke is no longer inside. They can be repaired however, email [email protected] to discuss further.
Thanks, Bob

Posted on Jan 12, 2010



  • 332 Answers

SOURCE: F5 keb inverter problem

check you owners manual there should be inline fuses that maybe bad

Posted on Mar 10, 2010


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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 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

2 Answers

Keb inverter f5 error e.pu

General powericon1.png stage failure.

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

Oct 03, 2013 | Inverter KEB COMBIVERT F5

2 Answers

How do i clear Error code E.Puch

E.puch power unit changed
power unit identification was changed, with a avalid power circuit this error can be reset by writting to SY.3. If the value displayed in SY.3 is written, only the power-cricuit dependent parameters are reinitialized. if any other value is written, then the default set is loaded . On some systems after writing SY.3 a power-On -Reset is necessary........

Apr 25, 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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