There must be a way to adjust the temperature, go to the manual or call the service.
HERE is a link to the manufacturer.
Good luck .
F-350 ,2006,XLT,SD,LB,EC,6.0LT,Auto,SRW.
5W Cruiser 2006 CF29CK Crossroad
RVing 4-5 months every summer since 2002.
P.A,Escapee club memeber,TomTom Go 5606
Website