HPT DWF50. Home › Forums › Trade Technical & Spare Parts Forums › Trade Technical Enquiries › HPT DWF50. This topic has 1 reply, 2 voices, and was last updated 20 years, 11 months ago by ChrisR. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts May 3, 2005 at 6:34 pm #9358 ChrisRParticipant Hi guys. 😀 What fault code applies when the `fast 40` and `del 50` flash together on this dishwasher. Thanks. Chris. May 3, 2005 at 7:38 pm #133700 eastlmarkModerator Re: HPT DWF50. dont know but check the heater, we are getting through shed loads of em! Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In