Daf cf75 - 360 heater

Hi all I have a 2005 daf CF 75 360 - the problem I got is the heater - if you turn the heat up its fine but if you turn it down to cold it takes quite a while to cool down an even then it’s not that cold - if you leave it on cold then leave it tickin over it goes really warm an dont cool down for a while whilst driving - help us out it’s drivin me mad

Iirc there’s a cable from the heater switch to the heater unit , it’s probably seized or broken !

hi mate no thats working fine

leedrivesatruck:
hi mate no thats working fine

ok, maybe the shut off valve on the end of the cable isn’t closing properly and letting hot water through when it shouldn’t ?