Power Stage Part Numbers Topic is solved

[RickHaleParker]

Thank you Neil and Rick,
Neil, I photographed the front of my ecc as I cannot see the C or F markings. I may have missed something as I am somewhat overloaded/lost with sorting this out.

16 - 28 ℃ = 60 - 84 ℉ The only difference between the ℃ & ℉ is the front panel. The ℉ unit is marked 60 - 84.
There is no reason for any other difference other then a different part number so that they can deliver a unit with the cosmetically correct front panel. If you can find a ℉ unit of a compatible revision ( 6 - 10 ) you could just swap the front panel or us use it as is.

[Navy]

Hello everyone and sorry for the delay.
This is a long story but the short version is I got wind of a bloke up north (Bedford) about 65miles northeast of London who has nothing but Volvos on his land. A quick phone call to confim he may have the part, which he seemed somewhat vague about, oddly however he mentioned he has 350 Volvos out back so the part I want must be there.
Well, I decided to make the journey with the missus in tow on the worse day possible freezing cold and rain all the way there. Anyway, we got there and from what I could see the site used to be a petrol station but true to his word there was about 70 Volvos in the front but none of the 850's had ECC. "Not to worry there's more 'round back", he shouts. So off 'round back me heads missus intow and blimey what a sight....probably 400 Volvos in a field stacked 3 high, but...................it looked as though a hurricane had passed through as most cars were on their sides or upside down...a real mess and very sad to be honest. clearly these cars had been there for a long time judging by the moss and weeds which have taken hold.
Ok, so roughly 40 850's and all one were MCC. I noticed all had front facia ripped out so something behind the radio must be a common failure. So the last green 850 N reg 1994/5 I ventured into had a resistor similar to mine but different part number. So I pulled it and tried it in my car and hey presto the blower works and the speed varies too. Brill. £20 lighter we headed home. It was 30miles into my return when I remembered the nice newish tail lights I saw and the clips I need for my roof bar and a tailgate strut but the missus was already miserable so it will have to be another trip sometime in the spring.
I was told by Volvo (Doves) that the ECC version was very rare in the uk and from what I saw it's true.
So, I have photos to add if it helps anyone in the future. My original resistor part number 9144355 and the replacement which works part number 9134933.
Thanks for everyones help in getting me here.

The left resistor is the working 9134933 the other is my orginal faulty 9144355