Bauknecht Condensing Tumble Drier F21 error… Home › Forums › Trade Technical & Spare Parts Forums › Trade Technical Enquiries › Bauknecht Condensing Tumble Drier F21 error… This topic has 0 replies, 1 voice, and was last updated 10 years, 10 months ago by neon_3SP_glow. Viewing 1 post (of 1 total) Author Posts June 4, 2015 at 1:23 pm #85154 neon_3SP_glowParticipant Model = TRKK6860 Fault code F21 displayed WHILST machine is running? Any ideas greatly appreciated… Drum turning… Heating circuit on and heating… Appears to be intermittent fault… Many thanks all 😀 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