What I have done was at my own risk and I'm putting up this thread to express my findings with you guys but also to get some advice.... I'll try and explain this the best I can, and I have also attached some pictures of the relay to give you an idea of what i've done.
As we all know, there is an known issue with the heater/blowers only working on number 4. Now for some of you, replacing the heater resistor does the trick, but for the majority it doesn't.
1st of all, I replaced the heater resistor the other week and this didn't do the trick, so left it in. I read up on some threads and some say that it could be an issue with the relay.
So I got to work and removed the glove box. To the left there were the relays, I removed the Blue relay which is found on the bottom right hand side of the relay box (you can't miss it)
I took away the cover to have a look at the actual relay to see if I could find anything that looked broken! There was a slight char to the coil so possibly something has burnt out?!
I read on another thread that when the dial is turned, the relay should 'move' but my relay wasn't moving when switching between 1 - 3. Is this correct?
After playing about I noticed that there is a mechanism which pushes against the bronze backplate.
I got a staple, as it was the only thing i could find, trimmed it and bent it so that I could keep this mechanism against the bronze plate. I put this back into the car and right away I could start hearing the motor/fan spinning!
I turned the dial to 1 through to 3 and it started blowing air! HURRAY..... BUT... The motor/fan is still constantly spinning, as if there is an electrical current always going through it... even with the keys out of the car.
Now I can only assume that this is a faulty relay as everything else seems to be working fine.
Can someone clarify this before I go and buy a new relay.