This article contains the Troubleshooting Guide for the HV320 Series Shark® Rocket® Ultra-Light Corded Stick Vacuum. This supports the following SKUs: HV320, HV320C, HV320W, HV321, HV321C, HV322, HV322BRN, HV322C, HV322Q, HV322QBK, HV322QBL, HV322QF, HV322QGN, HV323, HV324Q, HV324QBK, HV324QBL, HV324QCB, HV324QF, HV325, HV370, HV370C, HV371, HV372, QS371QBK, QS371QBL, QS371QGN, QS371QRW, UV330, UV422, UV422CCO and UV425CCO.