This listing will supply you with 4 x new Zettler AZ2150W-1AE-12DEFT We recommend replacing the 4 x relays altogether. This will in most cases repair the very common E031 fault experienced on the Aurora PVI inverters. These relays are fitted to the 3.0 & 3.6 including the 4.2 PVI TL OUTD models.
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