spiralsmile Profile Topics Started Replies Created Engagements Favorites Search replies: Forum Replies Created Viewing 3 posts - 1 through 3 (of 3 total) Author Posts September 16, 2014 at 8:32 pm in reply to: Siemens IQ300 SN26M890GB/28 Error Code 21 #419264 spiralsmileParticipant Re: Siemens IQ300 SN26M890GB/28 Error Code 21 Ye olde, hosepipe! Where would we be with out it. Shoved it up the circulation pump inlet with tea towel to seal it. Ramped up pressure and this has seemingly solved the issue without removing anything. September 16, 2014 at 6:58 pm in reply to: Siemens IQ300 SN26M890GB/28 Error Code 21 #419263 spiralsmileParticipant Re: Siemens IQ300 SN26M890GB/28 Error Code 21 Cheers Martin, Is there a good walk through of the operation out there? September 16, 2014 at 6:08 pm in reply to: Siemens IQ300 SN26M890GB/28 Error Code 21 #419261 spiralsmileParticipant Re: Siemens IQ300 SN26M890GB/28 Error Code 21 Martin, is there a simple fix? Or is it a remove and replace? Author Posts Viewing 3 posts - 1 through 3 (of 3 total)