Also have 2 SNA 5000 Luxpower inverters in parallel.
Problem started with a communications error message. Sent the inverter to Luxpower for repairs. They informed me that there was moisture damage ( unit is 10 months old) were very helpful , cleaned the unit and returned it. That solved the communications error but l now have a Bus voltage high error ( EO 19 ). Problems all on the one inverter.
My installer now informs me that this unit should not be used within 30 kms of the coast. If this is the case Luxpower should be aware of it and disclose it prior to sales.
Makes no sense to me as l have a 5 year old Mecer in the same garage which works perfectly.
The second inverter still works perfectly.
My installer has also advised me to replace the SNA model with the XP which has a IP 65 rating.