This article contains the Troubleshooting Guide for the NV602UK/NV612UK Series Shark® Lift-Away Upright Pet Vacuum. This supports the following SKUs: NV602UK, NV602UKT, NV612UK and NV612UKT. Please note this also supports the refurbished SKUs NV602UKREFB, NV612UKREFB and NV612UKTREFB.