Search results

  1. R

    Hayward H Series Low Nox Heater Temperature Buttons now working.

    I have a Hayward H25FDN Universal Low Nox heater that works but now when I push the Up or Down Temp buttons OR Mode button, nothing happens. I can se the temperature readout fine and there are no error codes. A few years ago I replaced the Bezel & Keypad #FDXLBKP1930 and the Thermistore...