Walter2 Posted June 8, 2018 Report Share Posted June 8, 2018 (edited) I have an Aqualink RS8 controller with some wires on a 4 pin connector in top left corner, Green (ground), Pool (Yellow), Spa [Blue], Hot (Red), and on another line Common [white] . where do these connect to the Hayward heater H400FDN 3 wire remote marked (Spa, COM, Pool) I tried connection Spa to Spa, Common to white, and Pool to Pool, but that did not work. Should I connect the line with electricity (hot) to the COM ? Edited June 8, 2018 by Walter2 DETAIL Quote Link to comment Share on other sites More sharing options...
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