blower fan not working

[rwelch]

Just picked up a 440 sxi for my son. It has the Aircon unit in the dash. The blower fan works fine on the A/c max setting ... but when you switch to A/C or to any of the no aircon positions the fan doesn't work at all.

I've swapped the 4 position blower fan switch from another 440 that works, I've checked the fuses (both the A/C fuse and the fan fuse) and I'm assuming that since the fan works in the A/C max position it isn't the fan thats faulty.

Is there a relay I'm missing or is there something else in the circuit that I need to look at?

thanks for any help

[GTMaster]

Does it have the push button type ventilation unit (the one where you have to push buttons to direct the air)? It's a VEM that controls where the air blows and controls the fan as well. It needs to be removed and has to have a connection on the inside soldered. But being a 440 xsi it might be a later model with the turn buttons...

[GTMaster]

This old thread may help:

http://www.volvoforums.org.uk/showthread.php?t=57882

[rwelch]

This old thread may help:

http://www.volvoforums.org.uk/showthread.php?t=57882

Thanks. Yes it does have the push buttons. The old thread helps a lot. It would be even better if someone had pictures or sketches to show the layout of the connections that are likely to be faulty?

[GTMaster]

The 480 europe site is listed on the old thread i mentioned. Here it is:

http://www.volvo-480-europe.org/volvo480/faq/index.php

As the picture shows, look for dry solder joints. You can tell by the cracks on the joint.