{"action":"created","issue":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1634","labels_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1634/labels{/name}","comments_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1634/comments","events_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1634/events","html_url":"https://github.com/MarlinFirmware/Marlin/issues/1634","id":62638270,"number":1634,"title":"Cannot reach target temperature beyond 260 deg C even though Configuration.h says so","user":{"login":"emartinez167","id":6754159,"avatar_url":"https://avatars.githubusercontent.com/u/6754159?v=3","gravatar_id":"","url":"https://api.github.com/users/emartinez167","html_url":"https://github.com/emartinez167","followers_url":"https://api.github.com/users/emartinez167/followers","following_url":"https://api.github.com/users/emartinez167/following{/other_user}","gists_url":"https://api.github.com/users/emartinez167/gists{/gist_id}","starred_url":"https://api.github.com/users/emartinez167/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/emartinez167/subscriptions","organizations_url":"https://api.github.com/users/emartinez167/orgs","repos_url":"https://api.github.com/users/emartinez167/repos","events_url":"https://api.github.com/users/emartinez167/events{/privacy}","received_events_url":"https://api.github.com/users/emartinez167/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":21,"created_at":"2015-03-18T09:34:08Z","updated_at":"2015-03-24T13:19:03Z","closed_at":null,"body":"I am experiencing an issue. With an extruder quite capable of reaching over 400 deg C, I set the target temp to anything above 260 and the extruder just seems to turn off and cycles up and down in a repetitive pattern. I enabled debugging in Configuration.h by uncommenting the following line:\r\n\r\n#ifdef PIDTEMP\r\n  #define PID_DEBUG // Sends debug data to the serial port.\r\n\r\nThis is what debug writes out:\r\n< 5:21:15 pm: echo: PID_DEBUG 0: Input 269.38 Output 255.00 pTerm 0.00 iTerm 0.00 dTerm 0.00\r\n< 5:21:15 pm: echo: PID_DEBUG 0: Input 270.16 Output 51.41 pTerm 98.44 iTerm 1.65 dTerm 48.68\r\n< 5:21:16 pm: echo: PID_DEBUG 0: Input 269.53 Output 255.00 pTerm 98.44 iTerm 1.65 dTerm 48.68\r\n< 5:21:16 pm: echo: PID_DEBUG 0: Input 269.84 Output 255.00 pTerm 98.44 iTerm 1.65 dTerm 48.68\r\n< 5:21:16 pm: ok T:269.8 /280.0 B:22.2 /0.0 T0:269.8 /280.0 T1:32.1 /0.0 @:127 B@:0\r\n< 5:21:16 pm: echo: PID_DEBUG 0: Input 269.84 Output 255.00 pTerm 98.44 iTerm 1.65 dTerm 48.68\r\n< 5:21:16 pm: echo: PID_DEBUG 0: Input 270.16 Output 34.37 pTerm 98.44 iTerm 1.65 dTerm 65.71\r\n< 5:21:16 pm: echo: PID_DEBUG 0: Input 270.00 Output 50.62 pTerm 100.00 iTerm 3.32 dTerm 52.69\r\n< 5:21:17 pm: echo: PID_DEBUG 0: Input 270.00 Output 54.93 pTerm 100.00 iTerm 4.99 dTerm 50.06\r\n< 5:21:17 pm: echo: PID_DEBUG 0: Input 270.16 Output 47.78 pTerm 98.44 iTerm 6.63 dTerm 57.29\r\n\r\nI would like to understand if this is an issue with the thermistor, or is there something else going on?\r\n![screenshot 2015-03-18 17 30 56](https://cloud.githubusercontent.com/assets/6754159/6706024/f5e7ac64-cd94-11e4-9164-c80255744ad9.png)\r\n"},"comment":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/comments/85490307","html_url":"https://github.com/MarlinFirmware/Marlin/issues/1634#issuecomment-85490307","issue_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1634","id":85490307,"user":{"login":"emartinez167","id":6754159,"avatar_url":"https://avatars.githubusercontent.com/u/6754159?v=3","gravatar_id":"","url":"https://api.github.com/users/emartinez167","html_url":"https://github.com/emartinez167","followers_url":"https://api.github.com/users/emartinez167/followers","following_url":"https://api.github.com/users/emartinez167/following{/other_user}","gists_url":"https://api.github.com/users/emartinez167/gists{/gist_id}","starred_url":"https://api.github.com/users/emartinez167/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/emartinez167/subscriptions","organizations_url":"https://api.github.com/users/emartinez167/orgs","repos_url":"https://api.github.com/users/emartinez167/repos","events_url":"https://api.github.com/users/emartinez167/events{/privacy}","received_events_url":"https://api.github.com/users/emartinez167/received_events","type":"User","site_admin":false},"created_at":"2015-03-24T13:19:03Z","updated_at":"2015-03-24T13:19:03Z","body":"LOL!\n\nRegards,\n\nErnesto\n\n> On 24 Mar 2015, at 21:17, Wurstnase <notifications@github.com> wrote:\n> \n> @AnHardt This is #1634?!?\n> \n> —\n> Reply to this email directly or view it on GitHub.\n> \n"}}