The problem is with the validator and not the ACW. Who installed a AE2612 validator into the ACW-4? A Mars AE2612 validator is a 24 volt upstack validator with a compact bezel. You should be using a AE2631 downstacker validator, which is a 110 volt validator with a VFM bezel. Can you send me some pictures of this install? I’d like to see how it was done.