several times I try to find radiator fan relay (control unit) but I can't find it. Please let me know...

 

Fan is running all the time if the fuse is connected.

Edited 3 September, 20187 yr by OH1XE

What year is your Octavia, and what type of air conditioning system does it have?

It is normally inside the main fan unit.

2 hours ago, Wino said:

What year is your Octavia, and what type of air conditioning system does it have?

Model 2005 with A/C.

Radiator fans were changed. Still the bigger fan is running all the time as well the battery is empty. I thing this is the relay what I looking for.https://m.ebay.com/itm/RADIATOR-FAN-RELAY-SKODA-OCTAVIA-1U2-1997-2010-1U5-1998-2010-1J0919506k/153154766706?hash=item23a8bc4772:g:zsgAAOSwYq5bW1KL

 

but where it is located?

Edited 4 September, 20187 yr by OH1XE

12 minutes ago, OH1XE said:

Model 2005 with A/C.

Radiator fans were changed. Still the bigger fan is running all the time as well the battery is empty. I thing this is the relay what I looking for.https://m.ebay.com/itm/RADIATOR-FAN-RELAY-SKODA-OCTAVIA-1U2-1997-2010-1U5-1998-2010-1J0919506k/153154766706?hash=item23a8bc4772:g:zsgAAOSwYq5bW1KL

 

12 minutes ago, OH1XE said:

but where it is located?  

PS. i found Fabia relay location, but not a word of Octavia

 

 

As said the control unit is built into the main fan. The smaller fan if installed is control via LIN from the larger fan.

7 hours ago, Tech1e said:

As said the control unit is built into the main fan. The smaller fan if installed is control via LIN from the larger fan.

OK. Thank You! 

I opened the fan and the are some electronics, which are not serviceable. See the photo.

So I need to buy brand new fan and problem solved.

 

 

This may….. help others who are willing to dismantle the fans before spending over £200 on new ones….

 

Similar twin fan systems on our cars 

 

Worth a go, I reckon should only take an hour or so to do.

 

Good Luck 👍

 

https://www.myturbodiesel.com/d2/1000q/a5/radiator-fan-repair-jetta.htm

On 04/09/2018 at 20:36, OH1XE said:

OK. Thank You! 

I opened the fan and the are some electronics, which are not serviceable. See the photo.

So I need to buy brand new fan and problem solved.

 

 

 

Considering that earlier fan designs with just a single wirewound resistor inside the housing have proved unreliable, this seems like a very bold design idea. Or strategic?