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Universal H Series Heaters - Hayward Gas valve de-energizes (for 30 second, blower post purge) Starts over at #2 of heating mode sequence Retries 3 times until lockout (IF code) Waits 60 minutes then retries 3 more times Will continue to retry every 60 minutes, until demand for heat is stopped
How do you troubleshoot an SF or HS code? - hayward. com The 'SF' code indicates a sensor failure Check the thermistor resistance between specified wires If the readings differ by more than 1°, replace the thermistor The 'HS' code indicates high water temperature Ensure the water inlet and outlet are plumbed correctly
Hayward Pool Heater Error Codes [14 Easy Fixes] - HeaterFixLab The Hayward pool heater HF error code will appear when there is a flame present but the gas valve is not energized Solution: Follow the instructions below to get rid of the HF error code
Hayward H400FDN Codes - Trouble Free Pool Giving this thread a bump as I am experiencing the HS LO codes now too, exact same issues Heater goes until 85-90F then throws HS code then LO code Bypass valve is closed so water should be full pressure into heater
Universal H Series Heaters - Hayward Below is a list of all Diagnostic Codes for the UHS Heater Troubleshooting Steps for each Code are covered on the following pages Diagnostic Code Description AC Blower Vacuum Switch closed AO Blower Vacuum Switch open BD Bad board or secondary high voltage fault CE Communication Error Between Control Module and Display Interface Assembly
OWNER’S MANUAL - Hayward IMPORTANT-Reference NEC codes for all wiring standards including, but not limited to, grounding, bonding and other general wiring procedures WARNING – Suction Entrapment Hazard