Ariston 8gal Tank Is Giving Small Peices Of Black Sediment. Two Tanks Replaced Now..are These Just Defective?
We have installed a Rennai tankless hot water heater with a 8 gal Ariston electric hotwater heater. After a few days of operation we noticed small peices of black sediment coming out of the hot water side only. Removal of the Ariston clears up the problem. 2 tanks now and both had the same problem. [...]