we have had abit of trouble with our 6420 and the air con on it and when ever the fan is turned off there is this blue liquid that drips from the roof dealer thinks that there is to much pressure in the system but has anyone had the same problom and how was it solved

not the same tractor but we had a similar problem on the Newholland 9482 at work with it pissing out liqud were it wasent suposed to think it was tractdown to a problem with the AC compresor somthing to do with a releaf valv i beleav but not 100% sure i wasent the one to fix it so.