Huanyang VFD Error code 'EEP' undocumented

Went in the workshop today to use the lathe and before I even selected run the VFD was showing an error code that is not listed in the manual.

Its a 2.2KW version (HY02D223DS) and has worked flawlessly from new (about 7 years) for most of that time has been powered up 24 hours a day and I just use the remote pendant to operate.

A quick Google did not produce any fixes and I only got a couple of hits where other users deduced the EEP code referred to faulty eprom or processor.

Not being hopeful that I could just do a repair I have ordered a new Huanyang VFD (I was surprised by the wide range of prices for what look like identical examples, I went for the cheapest!

Has anyone here had the same error code?

Ian P

A quick Google search seems to indicate that this is a de facto standard code for many controllers:

[quote]

EEP Code

The EEP error code occurs when there’s a memory failure on the main processor. The quick solution is to switch off the power at the toggle switch and the main source. Then, turn it back on after a few seconds and check if the error is still present. If the error doesn’t go away, replacing the board is the best solution.

[/quote]

MichaelG.

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Ref. __ https://poolcareschool.com/pool-heater-error-codes/

Edited By Michael Gilligan on 06/04/2023 20:11:31

None of my searches for "EEP" code returned anything useful, in fact Google repeatedly changed my search term to EPP (lots of results but not really relevant).

I've tried the power off and on again technique but the error is firmly ensconced.

Replacement VFD is arriving by Amazon tomorrow and once the lathe is up and running I will have a look inside the faulty unit in case there is something obvious (like an eprom falling out of its socket), otherwise its WEE.

Ian

Just to humour me, Ian … would you please try putting

error code eep

into a Google search box

… It worked for me !!

May the Force be with you

MichaelG.

I would have looked inside for loose components or failed on board battery etc first before shelling out on a new unit.

in my experience, about 75% off electronic faults are actually due to bad connections. There might have been a mains spike overnight which toasted your unit, but still worth checking for the obvious and easy stuff first - as long as you are electronically competent.

There is a Youtube entry regarding the EEP error message on a VFD unit here, run in about 35 seconds to see documentation for the EEP fault condition.

Martin

I tried "error code eep" as you suggested and it does return lots of hits, It seems "eep" is used by numerous manufacturers to indicate a memory or processor problem which usually requires the replacement of a PCB (not a realistic option on a Huanyang VFD).

Out of interest Michael, try putting 'eep code' in Google, The first result I get asks me if I meant 'epp code'

I posted originally after I had searched for 'huanyang eep error' and multiple other similar search strings to see if there was known solution. I eventually (actually fairly quickly) came to the conclusion that I was fighting a losing battle. I hate throwing things away and often waste a lot of time trying to resurrect low value items that are just not designed to be repairable. In this VFD the PCB containing the control (rather than the power electronics) has a very thick, epoxy like, conformal coating which makes even inspecting the components very difficult.

The replacement 2.2KW VFD (£64 next day from Amazon) is now up and running although the supplied documentation is really bad even taking the low price into account. I had to resort to trial and error, and some luck when it came to connecting the remote wiring.

Ian P

… and how very rude of it not to offer NO as an answer !!

MichaelG.