Hayward HAXTST1930 – Thermostat Kit with Control Knob
Product Overview
The Hayward HAXTST1930 is an OEM replacement thermostat kit designed for Hayward H-Series pool heaters. It restores accurate temperature adjustment and dependable heater control when the original thermostat or knob becomes worn, damaged, or unresponsive.
Key Features
- OEM thermostat assembly designed specifically for Hayward H-Series heaters.
- Includes thermostat unit, mounting hardware, and replacement temperature control knob.
- Restores proper temperature regulation for safe and efficient heater operation.
- Durable construction suited for long-term exposure inside heater cabinets.
Technical Specifications
- Part Number: HAXTST1930
- Application: Temperature control thermostat for H-Series pool and spa heaters
- Components Included: Thermostat assembly, control knob, and mounting bracket
Applications & Compatibility
This thermostat kit fits select Hayward H-Series heaters, including various induced-draft and electronic/millivolt models. It is used when the temperature knob fails, the thermostat no longer responds accurately, or when corrosion or mechanical wear affects proper heater control. Always check your heater’s model plate to ensure correct fit before purchasing.
Installation Instructions
- Shut off power and gas supply to the heater before beginning service.
- Remove the front or side access panel to locate the existing thermostat assembly.
- Disconnect wiring from the old thermostat and remove mounting hardware.
- Install the new HAXTST1930 thermostat, attach the control knob, and reconnect wiring as labeled.
- Reinstall the access panel, restore power and gas, and test heater operation by adjusting the temperature knob.
Troubleshooting
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Heater does not respond to temperature changes: Ensure thermostat wiring is securely connected and that the knob is properly attached.
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Temperature fluctuates or cycles: Confirm proper sensor placement and verify adequate water flow through the heater.
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No heat output: Check safety switches, thermostat installation, and verify that gas and power are restored.
Maintenance Tip
Inspect the thermostat and control knob annually for wear, corrosion, or loose connections. Keeping these components in good condition ensures precise temperature control and extends the life of your pool heater.
