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  1. R

    Hayward Error Code

    FC4 fuse keeps blowing
  2. R

    Hayward Error Code

    I have a Hayward H400IDL2
  3. R

    Hayward Error Code

    I have a Hayward H Series heater for my in ground pool (natural gas and self ignition). I had power to the unit but it wasn't turning on. I replaced the fuses and now the unit is turning on but it is staying in "standby" mode with a "bo" error code. I tried holding the mode and down buttons...