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Apr 16, 2026 - 10:26 AM
Yes, this retrofit board is compatible with the HP21124T heat pump model.
Is this control kit compatible with HP21124T? Hayward Retrofit Board-Control Kit for Summit, HPX51100122201
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Open Apr 16, 2026 - 10:26 AM
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Hayward Retrofit Board-Control Kit for Summit, HPX51100122201
" HPX51100122201 is OOS and obsolete. It has been replaced by the vendor with HPX51101076801 Hayward HPX51100122201 Retrofit Board-Control Kit for Summit Features Replaces SMX306000016 Electronic Control Board</li>
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