Having trouble with your Festool power tool? Well, we're here to help you. Before posting to the forum, give us a chance to diagnose and resolve your issue. In the U.S. and Canada, call us toll-free at 888-337-8600 on Monday-Friday between 8a-5p EST or contact us via email at service@festoolusa.com. For other countries, please visit http://www.festool.com for contact information for your local Festool service department.

Author Topic: ETS EC 125 / 3 stops randomly and doesn't start again  (Read 1078 times)

0 Members and 1 Guest are viewing this topic.

Offline karellm

  • Posts: 3
ETS EC 125 / 3 stops randomly and doesn't start again
« on: April 27, 2020, 10:34 PM »
Hi, I bought an ETS EC 125 sander couple months ago and yesterday it started to act weird. It stops while I'm sanding (I'm not pressing the button by mistake). Then if I try to turn it back on, it sometimes starts, sometimes not, sometimes just half way before stopping again. If I wait a bit, I can start it again. Does anyone have any idea what is going on?

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.


Offline Mario Turcot

  • Posts: 1270
Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #1 on: April 27, 2020, 11:30 PM »
 [welcome] to he FOG

First clean both ends of the plug-it cord. Make sure you plug it back twisting a 1/4 turn. If it still not working properly test with another plug-it cord if you can. Finally you may have to send it for repair, I would call your country Festool office first tho.
Mario

Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #2 on: April 28, 2020, 03:15 AM »
Mine had the same issue and after cleaning the sander completely i came to the conclusion that dust and dirt are not the issue with the hose detection so i sent the sander to festool repair center. If i remember correctly i believe they changed the electronics board inside the case and since then it has worked perfectly again.

Offline nvalinski

  • Posts: 138
Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #3 on: April 28, 2020, 08:58 AM »
The hose connection sensor has been a frequent culprit. Make sure that if you have the new bayonette fitting that it is pushed on all the way and locked. If you are putting an older style hose over the fitting, make sure it is all the way forward on the fitting to meet the ring. You can see there's a little clear plastic piece of the hose fitting - this is the piece that has a little photosensor in it to detect light (and presumably if the hose is pushed on all the way). The sander will shut off if it detects the hose being off, which may just be partially off enough to let some light into the sensor.

Offline rshill

  • Posts: 11
Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #4 on: April 28, 2020, 10:17 AM »
I have this same sander, and I didn't even know it had a hose detection sensor until I read this. Last week I accidentally ran mine without the hose, and it worked normally. Is that a faulty sensor?

Offline nvalinski

  • Posts: 138
Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #5 on: April 28, 2020, 10:42 AM »
I have this same sander, and I didn't even know it had a hose detection sensor until I read this. Last week I accidentally ran mine without the hose, and it worked normally. Is that a faulty sensor?

No, you can change the settings on the sander. You can change it with the following steps (copied from another post/UK manual):

1. Switch on power tool by briefly pressing the ON/ OFF button [1-1].
2. Switch off the power tool again and hold down the ON/OFF button [1-1].
3. Power tool beeps once.
4. Turn speed control [1-2] to both end positions (Level 1 and 6)
5. Power tool beeps three times for ON and twice for OFF
6. Release ON/OFF button

Extractor signal is activated or deactivated.

Offline Peter_C

  • Posts: 999
Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #6 on: April 28, 2020, 03:26 PM »
My ETS EC sander also randomly stopped after a few minutes run time. Once cooled it would restart for a shorter period of time. Tried turning off the vacuum sensor and same thing, so I sent it in under warranty. Once repaired it has worked flawlessly ever since.

Turn off the vacuum sensor, and retest. If it still fails, send it in under warranty.

Offline karellm

  • Posts: 3
Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #7 on: April 28, 2020, 07:38 PM »
Thanks everyone for the insightful answers! This forum is really full of knowledge. I will try turning the option off and back tomorrow but none of the other tests worked. I might have to send if for repair. That's the second Festool sander I own that I have to send for repair for IO issue :(

Offline xedos

  • Posts: 459
Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #8 on: April 28, 2020, 08:01 PM »
Quote
it started to act weird. It stops while I'm sanding

It's almost certainly the electronic.   While not as common as a kapex motor failure, it is a know occurrence and has been mentioned here before.

Quote
I might have to send if for repair.

Why wouldn't you ? 

Quote
That's the second Festool sander I own that I have to send for repair for IO issue

Not a good track record.  What was the other repair?    I have numerous FT sanders , but the EC is the only one I've ever had trouble with.
 

Offline karellm

  • Posts: 3
Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #9 on: April 29, 2020, 10:05 PM »
The other one was a Rotex 125 I bought about 8 years ago I believe and also stopped working within a year. All my other festool tools have worked great though.

Offline rfm

  • Posts: 2
Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #10 on: February 03, 2021, 07:04 AM »
I just bought an ETS 125/3 EC.  It arrived yesterday.  Within the first 10 minutes it exhibited the problem described on this thread.  It would either momentarily lose power then continue, or simply shut off.  It was not connected to any dust collection so I can rule out the sensor issue suggested by some.  I have just filled out a warranty service request for my brand new tool.

Offline Wood_Slice

  • Posts: 62
Re: ETS EC 125 / 3 stops randomly and doesn't start again
« Reply #11 on: February 22, 2021, 05:30 PM »
I have bought the same sander about 2 months ago and have sent it for warranty evaluation about 2 weeks ago for EXACT SAME ISSUE. Spoke to Festool today and apparently there is a issue with ETS EC sanders in general and they want to make sure they know what to do as it is probably a recall issue. They might not have enough sanders to replace/fix what is wrong with them.
DF 500 + Assortments | ETS EC 125/3 EQ | CT MIDI + CT-Fi| MFT3 + Elements|