dometic appliances sold in the usa with 220v?

We are in OZ and have a partly converted FW. Extra door on the left, gas lines op grated to all copper with stop coks at all appliances. Don’t have to be to Australian code for own use but can’t sell. El new power board, breakers and multi strand rated cable for 240V power points, 15A supply socket outside, all 110V appliances run true step down transformer. Only thing that don’t work is the inverter charger as internal switch won’t close as the Hz are wrong.
Frank