Series 60 DDEC VI Troubleshooting – Section 127 SPN 3720 – Ash Level Above Normal Email This Page Section 127 SPN 3720 - Ash Level Above Normal 127.1 SPN 3720/FMI 15 or 16 EPA07 Series 60 DDEC VI Troubleshooting Guide - 6SE567 Generated on 10-13-2008