White-Rogers/Emerson 47D43-811 Interface Plate
thingiverse
Interface board for popular and cheap White-Rogers/Emerson 47D43-811 Demand Defrost Control Board retrofit (47D40-801 does not have hi/lo pressure switch inputs). Hole pattern is 5.5" x 3.5" I added a kickout on the side for mounting a relay that's normally needed for reversing the O/B signal on most brands of heat pumps (since the board is designed to be a replacement for York Defrost Control Boards with B for the reversing valve). Drill holes as needed to match the stock hole pattern for your unit. Printed in PETG for moderate heat resistance.
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