Hayward Exhaust Gas Temperature Limit (One-Use) for Universal H-Series Gas Heaters | FDXLEGL1930

The Hayward Exhaust Gas Temperature Limit (FDXLEGL1930) is the OEM one-use replacement high-limit safety device for Hayward Universal H-Series gas heaters.

IMPORTANT: ONE-USE SAFETY DEVICE — DO NOT RESET OR REUSE
This is a single-use thermal limit device. Once it has tripped, it must be replaced — it cannot be reset or reinstalled. Reusing a tripped unit bypasses a critical safety function and must never be attempted.

IMPORTANT: PROFESSIONAL SERVICE REQUIRED
Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification.

This exhaust gas temperature limit monitors the heater's flue exhaust temperature. When exhaust temperatures exceed safe operating limits — indicating a blocked flue, heat exchanger fouling, or abnormal combustion conditions — this device interrupts heater operation to prevent damage and reduce the risk of overheating. Because it is a one-use device, activation signals a condition that requires professional diagnosis before returning the heater to service.

Specifications

Poolaroo Pro Tip

Before installing a replacement FDXLEGL1930, have a licensed pool or HVAC technician inspect the heater's flue path, heat exchanger, and combustion air supply. A tripped exhaust temperature limit is a symptom, not the root cause — returning the heater to service without diagnosing the underlying condition risks repeat failure and potential safety hazards.