checked re gassing, put pressure Guage on started engine ect put on low temp but guage is reading 55psi so no gas required according to chart so there is another fault can anyone help,

Flap motors behind the dashboard could be at fault .. about £90 each and there are 3 of them I beleive so get them all done at once but a main dealer will tell you the dashboard has to be removed at 12 hours labour .. however a competent mechanic will do the job without pulling the dash