Fan/air conditioning fuse

[blackdream]

I've problem with this fuse, If I turn on the air conditioning on position 1 everything works good. If I turn it on position 2 or more then the fuse broke. Anyone have an idea of why this happen? Also anyone know what fuse I need? there was a 30A one and I replaced with the same one but maybe it need a bigger one?
thanks
Mario

 

[blackdream]

guys this thing is driving me crazy. Everything works perfect on position 1 and 2, most of the times also on position 3 and 4. But the damn fuse still blown very often on position 3 and 4. Any idea?

 

[Fl@pper]

does it work with a/c off on 1234 ok ?

 

[blackdream]

does it work with a/c off on 1234 ok ?

I thought it only happen when A/C was on but last time happened also with A/C off on position 4. I remember there is a way looking at a blown fuse to see if it is blown for court-circuit or for excess of power. Anyone remember the difference? I'll take a pic of the fuses...

 

[Fl@pper]

commonly the heater rheostat speeds burn out and lose connection so may have melted across to earth and shorting out direct.

syptoms are losing 1/2/3 first as they are the resisted ones that take the grief so worth a look there too if it's popping fuses

also check check for current draw on the heater fan itself as that could be worn and causing the problem

 

[blackdream]

solved problem by disconnect and reconnect the jack on the AC compressor.