A strange odor from your solar roof or wiring is more than just an inconvenience; it is a critical warning sign. Ignoring these smells can lead to significant safety hazards, including electrical fires or system failures. Identify the source of the smell, 2. Consult a professional technician if necessary. A thorough investigation into the. . We got LG solar panels (AC coupled system) installed by local installers who had excellent ratings and referrals this last Friday. I have a 40amp mppt by EPEVER 2 years old. 2 Midnite Solar MNPV6 combiners w/20A DC. .