I recently purchased a factory refurbished ProMariner ProTech-4 battery charger
, specifically the 1230 model (12 volts, 30 amps, 3 banks), while on a visit to the USA. Carried it back to the boat
and hooked it up. Instantly blew the GFI breaker on the dock
box. Bench checked the unit, found that the same happened with the outputs disconnected. Then disconnected the green/yellow earth return lead going into the 240 volt input. Then the unit works fine, with nominal voltage on the outputs and no GFI problem. BUT, now there is around 180 VAC between the charger's chassis and ships ground. Not a healthy situation! The vendor is willing to replace the unit (no stress there), but shipping
two ways is very expensive and a nuisance to a moving cruiser.
So, it seems that this is likely a simple issue -- do any of our assembled experts have any suggestions for correcting the problem? I'd be grateful!
Jim and Ann s/v Insatiable II lying Manly, Qld Oz