Hayward FDXLTER1930 Thermistor
The Hayward FDXLTER1930 thermistor is a genuine replacement sensor designed for use in Universal H-Series low-NOx pool heaters. It monitors water or system temperature to ensure accurate control and safe heater operation.
Key Features
- Replacement thermistor for Universal H-Series heaters by Hayward.
- Ensures accurate temperature sensing for reliable heater operation.
- Supplied as an OEM part—fits multiple H-Series models.
- Designed for in-ground pool heater systems and commercial or residential applications.
Technical Details
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Part Number: FDXLTER1930
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UPC: 610377073790
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Compatible With: Hayward Universal H-Series Low NOx models (e.g., H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP)
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Application: Pool and spa heater temperature sensor
Installation & Compatibility Notes
Confirm that your heater model matches one of the supported H-Series models. Replace the thermistor only when the heater is powered off and access to the sensor location is available. Proper wiring and connection according to the heater’s wiring diagram are essential to restore correct temperature sensing and safe operation.
Maintenance Tips
- Inspect the sensor wiring and connection for any signs of corrosion or damage.
- Ensure the sensor probe is correctly positioned and secured in the specified sensor port.
- If the heater shows temperature errors or fails to up-rate temperature correctly, the thermistor may be the root cause.
- Always restore correct system grounding and return covers after service.
Why Choose This Part?
Installing the correct sensor for your heater ensures the control board receives accurate temperature feedback, which supports efficient heating, safe operation, and protects the heat exchanger from over-temperature damage. The Hayward FDXLTER1930 offers a factory-matched replacement, maintaining system integrity and avoiding compatibility issues.
