I recently plugged my brand new M3 into a new home 30A dedicated circuit via the Gen 2 Mobile Connector and
NEMA 14-30 adapter. Prior to this I had been charging strictly via 110V, Supercharger or J1772. Everything went fine for a couple of hours and then I received a "charging interrupted" message on my phone. The MC displayed a "no green, 3 red" indication, a "relay/contactor fault" according to the manual. Unplugging the charger from the wall cleared the condition. Upon further observation I discovered that the condition occurs coincident with startup of the home furnace blower (but does not happen with every blower cycle). If left on it's own, it takes about 30minutes before the condition self clears and charging commences again. Of course charging stops again when the blower motor next starts.
There appears to be no correlation between the state of the blower and clearing of the condition, except that a blower start may cause the fault to occur if charging when the blower starts. The blower is on a completely different circuit. Yes, old house, and we have observed a small voltage drop (1-2V at the NEMA 14-15) whenever the blower starts. Of course, since it's winter, the furnace blower cycles at regular intervals and so the only way to get a timely charge is to shut off the furnace. Brrr.
Does anyone know exactly what a "relay/contactor fault" is? Are we talking about MC components or car components? And does anyone know why it would take so long for the condition to clear?
Thanks much.
NEMA 14-30 adapter. Prior to this I had been charging strictly via 110V, Supercharger or J1772. Everything went fine for a couple of hours and then I received a "charging interrupted" message on my phone. The MC displayed a "no green, 3 red" indication, a "relay/contactor fault" according to the manual. Unplugging the charger from the wall cleared the condition. Upon further observation I discovered that the condition occurs coincident with startup of the home furnace blower (but does not happen with every blower cycle). If left on it's own, it takes about 30minutes before the condition self clears and charging commences again. Of course charging stops again when the blower motor next starts.
There appears to be no correlation between the state of the blower and clearing of the condition, except that a blower start may cause the fault to occur if charging when the blower starts. The blower is on a completely different circuit. Yes, old house, and we have observed a small voltage drop (1-2V at the NEMA 14-15) whenever the blower starts. Of course, since it's winter, the furnace blower cycles at regular intervals and so the only way to get a timely charge is to shut off the furnace. Brrr.
Does anyone know exactly what a "relay/contactor fault" is? Are we talking about MC components or car components? And does anyone know why it would take so long for the condition to clear?
Thanks much.