NHTSA recall 13V642000
Electrical system
Nova Bus Nova Lfs
The defect
Nova Bus is recalling certain 2009-2012 model year LFS and LFS HEV transit buses equipped with Sure Power DC-DC converters containing a particular epoxy sealing, aka 'potting', compound. The specific potting compound used in the subject products for insulation was found to be capable of conducting electricity after being exposed to heat.
The risk
Once electrically conductive, the material is capable of melting and burning, increasing the risk of a fire.
The remedy
Nova Bus will notify owners and dealers will inspect and replace the converters, as necessary, free of charge. The recall is expected to begin in January 2014. Owners may contact Nova Bus at 1-450-472-6410. Nova Bus's numbers for this recall are CR3030, CR3031, CR3032, CR3033 and CR3034 (depending on the converter's part number and location of in the vehicle).