The ResMed Technical Support team phone lines are open: Monday – Thursday: 8:00 – 12:00 and 13:00-17:00 Friday: 8:00 – 12:00 and 13:00 – 16:00 Please call +33 (0) 4 26 100 297 during opening hours. You can also send an email detailing your issue. Please email the team at support.technique@resmed.fr