Supersedes Technical Service Bulletin Group 69 number 12-22 dated February 13, 2012. After the comfort system central control module, J393 (address word 05) is replaced, the control module cannot be coded via SVM spec/actual. Any time a comfort system central control module, J393 (address word 05), is replaced, the new control module must be coded and parameterized with online SVM spec/actual or an SVM code. If the SVM spec/actual returns a response of ?Check Hardware?, then an SVM code is required to code and parameterize the new control module. The SVM code can be found in Parts Bulletin 9-101, which can be found on the etkainfo.com web site.
