Bosch Solar Services is replacing all roof-mounted Bosch c-Si 60 NA30119 solar modules currently installed in the United States and Canada as part of a voluntary recall undertaken in conjunction with the U.S. Consumer Product Safety Commission. Bosch observed that a small number of c-Si M 60 NA30119 modules exhibited what appeared to be heat marks near some solder joints. Bosch then conducted a detailed technical review to determine the cause of the marks.