Our surge guard 40250-RVC is humming loudly. Two red lights are on. Is something wrong with it? (Surge Guard 40250-RVC Plus Automatic RV Transfer Switch 50 Amp)

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Surge Guard 40250-RVC Plus Automatic RV Transfer Switch 50 Amp

The RV Surge Guard Plus 50 Amp transfer switch provides premium protection for your motorhome.

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Surge Guard 40250-RVC Plus Automatic RV Transfer Switch 50 Amp

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