when will green lights come on unit only red lights with humm and the inside panel does not display on the Surge Guard 40250-RVC Automatic Transfer Switch?
Surge Guard 40250-RVC Plus Automatic RV Transfer Switch 50 Amp
Question ID: 3032164 Status:
Open Jan 05, 2020 - 11:32 AM
Electrical > Automatic Transfer Switches
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Jan 07, 2020 - 01:23 AM
The ATS 40250 only has red lights. Those lights should be illuminated red when unit is plugged in. They will never turn green. The hum is from the coil inside the relay which engages the switch. The hum is normal. It is similar to a florescent light fixture hum or a transformer on a telephone pole hum. It is nothing to worry about.
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