How To Troubleshoot A Hayward Pool Heater: Most Common Issues, Error Codes & Solutions

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Hayward HDF400

FDXLTER1930 FD Series Thermistor for Hayward, Fit for Hayward Universal H-Series Low Nox Pool Heater Model: H150, H200, H250, H300, H350, H400, Fix SF Error Codes, 15 Year Warranty

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Stay in your pool longer. The... - Hayward Pool Products