Diplomat ADP 1520 Ceramic Hob. ER 37. Home › Forums › Public Support Forums › Help And Support › Cooker And Oven Forum › Diplomat ADP 1520 Ceramic Hob. ER 37. This topic has 0 replies, 1 voice, and was last updated 14 years, 9 months ago by cj1992. Viewing 1 post (of 1 total) Author Posts July 31, 2011 at 9:08 am #64242 cj1992Participant My Diplomat ADP 1520 Ceramic Hob is flashing ER 37 and won’t respond to any input. I am assuming this means Error code 37 but I don’t know what to do to rectify the situation. Can anybody help please? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In