S60 Air Con: - Snapped thermistor in ECC unit.

chiptivo · Jun 29th, 2010, 22:04

I am looking for a NTC Thermistor that sits behind the little vent in a Volvo 2004 S60 Electronic climate control unit.

I was cleaning and pulled/snapped mine...

It is probably one of these
http://www.made-in-china.com/showroo...Type-MJB-.html

But the resistances could be well out...

I have just brought a S80 unit of the same age (2004) from ebay, it looks identical although I have a S60????? Are they???

I am planning to just desolder the old and the new one across to avoiding any coding issues with the ECC as I think they are locked to the car???? (2004 model).

Any help really appreciated...

It is the little sensor that sits behind the three little vents in the ECC unit.

Chris_Rogers · Jun 30th, 2010, 18:10

What you could do is buy a secondhand ECC unit with a good sensor remove the sensor from it and solder it into your damaged unit.

While it's out you could perhaps identify the part and obtain a spare in case it happens again.

UK source here:

http://www.maplin.co.uk/module.aspx?moduleno=2218

Any colours left on the old one for a clue as to value required?

chiptivo · Jun 30th, 2010, 19:26

That maplin link is very interesting. When I unsolder it, I will measure it at different temperatures and try and work it out. Shame it has to be measured out of circuit... I do see a little red on the old one.. So assuming it is red, it has to be the 4k7 one?????

May get one from maplin and give it a go..

Thanks for the link.

Chris_Rogers · Jun 30th, 2010, 20:13

Another one here:

http://www.maplin.co.uk/Module.aspx?ModuleNo=2220

and here:

http://uk.rs-online.com/web/search/s...uctNum=6974590

Not sure which, if any, will be correct but not too expensive to experiment.

and some maths:

http://en.wikipedia.org/wiki/Thermistor

hobbyhorse · Jul 1st, 2010, 09:43

Chip, as you sure it's a thermistor ? ~ there's a humidity sensor in there somewhere... I think I'd change it like for like

chiptivo · Jul 4th, 2010, 00:13

Right... I have been measuring....

These are very estimate as I have no proper temperature guide, but I am getting...

In the fridge by the chilling element = 20k
Outside tonight about 15 Celsius = 14k
In my kitchen, very warm est 22 Celsius = 10k
Against my body est 28 Celsius? = 8k
8" above a near boiling kettle = 2k

So, am I anywhere near working out which value out of the 4 maplin ones I the volvo ECC uses???

Chris_Rogers · Jul 4th, 2010, 08:57

Data here:

http://twrite.org/shogunnew/data/climate.html

Room temperature thermistor
Glass bead NTC G540 thermistor,10k
RS Stock No. 528-8558
Manufacturer EPCOS
Manufacturers Part No. B57540G0103J
Catalogue page 2 - 3587
1 £3.99

Looks about right from the figures you obtained.

RS site seems to be down at present so can't check if the product is still available.

Symes · Jul 4th, 2010, 09:58

You might want to try this one too from CPC (Farnell)

http://cpc.farnell.com/jsp/level5/mo...cpc/265378.xml

Whilst they're only 39p each the shipping (free on orders of £45+) might be a bit out! They do have a limited trade counter - so that could be an option.

chiptivo · Jul 4th, 2010, 10:09

It is definitely the one Chris has posted, they are used in BMW's units, and after some googling it is identical physically....

I think I have found my precious... xx

Chris_Rogers · Jul 4th, 2010, 17:30

RS is up now here's the link:

http://uk.rs-online.com/web/search/s...558+&x=16&y=19

Jun 29th, 2010, 22:04	#1
chiptivo Premier Member Last Online: Jan 17th, 2022 13:13 Join Date: Apr 2010 Location: wirral	Snapped thermistor in ECC unit. I am looking for a NTC Thermistor that sits behind the little vent in a Volvo 2004 S60 Electronic climate control unit. I was cleaning and pulled/snapped mine... It is probably one of these http://www.made-in-china.com/showroo...Type-MJB-.html But the resistances could be well out... I have just brought a S80 unit of the same age (2004) from ebay, it looks identical although I have a S60????? Are they??? I am planning to just desolder the old and the new one across to avoiding any coding issues with the ECC as I think they are locked to the car???? (2004 model). Any help really appreciated... It is the little sensor that sits behind the three little vents in the ECC unit.

Jun 30th, 2010, 18:10	#2
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	What you could do is buy a secondhand ECC unit with a good sensor remove the sensor from it and solder it into your damaged unit. While it's out you could perhaps identify the part and obtain a spare in case it happens again. UK source here: http://www.maplin.co.uk/module.aspx?moduleno=2218 Any colours left on the old one for a clue as to value required? Last edited by Chris_Rogers; Jun 30th, 2010 at 18:17.

Jun 30th, 2010, 20:13	#4
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Another one here: http://www.maplin.co.uk/Module.aspx?ModuleNo=2220 and here: http://uk.rs-online.com/web/search/s...uctNum=6974590 Not sure which, if any, will be correct but not too expensive to experiment. and some maths: http://en.wikipedia.org/wiki/Thermistor Last edited by Chris_Rogers; Jun 30th, 2010 at 20:15.

Jul 1st, 2010, 09:43	#5
hobbyhorse Premier Member Last Online: Jan 26th, 2015 21:30 Join Date: Dec 2006 Location: Billericay	Chip, as you sure it's a thermistor ? ~ there's a humidity sensor in there somewhere... I think I'd change it like for like __________________ V70 D5 SE '53 Ricasportune 210 - departed 17.09.11

Jun 30th, 2010, 19:26	#3
chiptivo Premier Member Last Online: Jan 17th, 2022 13:13 Join Date: Apr 2010 Location: wirral	That maplin link is very interesting. When I unsolder it, I will measure it at different temperatures and try and work it out. Shame it has to be measured out of circuit... I do see a little red on the old one.. So assuming it is red, it has to be the 4k7 one????? May get one from maplin and give it a go.. Thanks for the link.

Jul 4th, 2010, 00:13	#6
chiptivo Premier Member Last Online: Jan 17th, 2022 13:13 Join Date: Apr 2010 Location: wirral	Right... I have been measuring.... These are very estimate as I have no proper temperature guide, but I am getting... In the fridge by the chilling element = 20k Outside tonight about 15 Celsius = 14k In my kitchen, very warm est 22 Celsius = 10k Against my body est 28 Celsius? = 8k 8" above a near boiling kettle = 2k So, am I anywhere near working out which value out of the 4 maplin ones I the volvo ECC uses???

Jul 4th, 2010, 08:57	#7
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	Data here: http://twrite.org/shogunnew/data/climate.html Room temperature thermistor Glass bead NTC G540 thermistor,10k RS Stock No. 528-8558 Manufacturer EPCOS Manufacturers Part No. B57540G0103J Catalogue page 2 - 3587 1 £3.99 Looks about right from the figures you obtained. RS site seems to be down at present so can't check if the product is still available.

Jul 4th, 2010, 09:58	#8
Symes Master Member Last Online: Apr 10th, 2024 03:33 Join Date: Oct 2001 Location: Andover, Hants	You might want to try this one too from CPC (Farnell) http://cpc.farnell.com/jsp/level5/mo...cpc/265378.xml Whilst they're only 39p each the shipping (free on orders of £45+) might be a bit out! They do have a limited trade counter - so that could be an option.

Jul 4th, 2010, 10:09	#9
chiptivo Premier Member Last Online: Jan 17th, 2022 13:13 Join Date: Apr 2010 Location: wirral	It is definitely the one Chris has posted, they are used in BMW's units, and after some googling it is identical physically.... I think I have found my precious... xx

Jul 4th, 2010, 17:30	#10
Chris_Rogers VOC Member Last Online: Apr 10th, 2017 16:55 Join Date: Jan 1970 Location: South Kent Coast	RS is up now here's the link: http://uk.rs-online.com/web/search/s...558+&x=16&y=19

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