BTDT- the corrosion can cause increased resistance and pop the fusable link. This happened simultaneously with the meltdown of my trinary switch. I replaced several wires and connectors along with the switch and have had no other heat build up or meltdowns. This was still a very easy project as vanagon AC projects go. One of many over about 2-3 years of troubleshooting the AC in my rig. In the end it was all worth it as I have had 34 deg. vent temps once the system really gets going good. 

David Clarkson
90 Westy-cool running!

 

-----Original Message-----
From: Gregory Smith <gfs@GREGORYFSMITH.COM>
To: vanagon <vanagon@GERRY.VANAGON.COM>
Sent: Fri, Aug 12, 2011 3:02 pm
Subject: AC cutting out momentarily

 
 
 
I was concerned about this after hearing from others about fires etc. in 
that area.  Mine still had the fuse (fusible link?) but it got too hot 
to touch when in use.  The connections were slightly corroded and one 
was loose.  I carefully cleaned the contacts and wahsers with 600 grit 
sandpaper and reassembled tightly.  As a n extra precaution I drilled a 
tidy pattern of vent holes in the cover panel below and above this area. 
 Still is pretty hot, but I think it is much cooler than before. 
 
Gregory Smith 
 
Smith Design Studio 
Small Building Company 
Olympia, WA 
360-239-0429 
gregoryfsmith.com 
 
 
-------- Original Message -------- 
Date: Thu, 11 Aug 2011 20:02:06 -0500 
From: jaime forero <jforero@SBCGLOBAL.NET> 
Subject: Re: AC cutting out momentarily 
 
Hi in my case I have found that on very hot days and after 20-25 minutes 
= 
of 
operating on high speed, 4 on the knob, the wire in the D pillar before 
= 
the 
fuse that feeds juice to the fan gets hot and trips the fuse. A while = 
back 
the original fuse got so hot that it basically melted the plastic holder 
= 
so 
I replaced it with a resettable fuse. The interesting thing is that the 
wires after the fuse going to the fan do not get very hot. I think my 
problem has to do with fans getting older and drawing more amps than = 
normal 
in high speed. Any suggestions?? Should I replace the wire that gets = 
hot 
with next gauge wire?? All other speeds, 3,2,1 work just fine.=20 
 
_________________ 
Jaime Forero 
jforero@sbcglobal.net 
Siempre Adelante!!!