<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m having the following problem:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><i>*** Fatal Error at time : 0.000000<o:p></o:p></i></p><p class=MsoNormal><i> Generated by Unit : 56<o:p></o:p></i></p><p class=MsoNormal><i> Generated by Type : 56<o:p></o:p></i></p><p class=MsoNormal><i> Message : Error in automatic heat transfer calculation for surface 6 or its adjacent surface!: Automatic heat transfer calculation is only allowed on surfaces within a zone. Please check building input file (.bui)!<o:p></o:p></i></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I see from the forum that other people have had this problem before, so I’ve set all the wall convective heat transfer coefficients to user-defined, but I still get the same result. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Can anybody help?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Rebecca<o:p></o:p></p></div></body></html>