018853F | Raypak Temperature Sensor Limit For Avia 264A & 404A

The Raypak 018853F Temperature Sensor Limit Kit is a vital OEM safety component for Avia 264A and 404A gas-fired heaters. This kit monitors temperature differentials to detect overheat or unsafe operating conditions, triggering shutdown or fault signals to protect the heater. Designed with precision sensors and temperature-limit hardware, it helps maintain heater reliability, safety compliance, and proper performance under varying load and water flow conditions. Using this kit ensures your heater operates within intended thermal thresholds and guards against damage from high temperatures.

Highlights

• Precise Temperature Monitoring: Includes high-quality sensors that accurately track temperature limits to help prevent overheating and ensure safe heater operation.

• OEM Safety Compliance for Avia 264A & 404A: Designed specifically for Avia Series 264A and 404A models to meet factory safety and performance standards.

• Protects Heater & Components from Damage: By detecting unsafe temperature conditions, it helps avoid damage to internal heat exchangers, wiring, and controls.

• Critical for Fault Detection & System Shutdown: Enables automatic shutdown or alerts when temperature thresholds are exceeded—key for maintaining warranty and operational safety.

• Engineered for Reliable Long-Term Use: Built with components made to endure repeated thermal cycling, moisture, and environmental stress typical of pool-heater environments.

Compatibility

• Raypak Avia 264A Heater Model 018032
• Raypak Avia 404A Heater Model 018033
• Raypak Avia HD NiTek 264A Heater Model 018044
• Raypak Avia HD NiTek 404A Heater Model 018045

Additional Info

Need help with the Raypak 018853F Temperature Sensor Limit Kit for Avia 264A and 404A heaters? This section covers installation guidance, troubleshooting common faults, and in-store availability questions so you can keep your system safe and reliable.

Installing the 018853F Limit Kit

The kit includes sensors and limit hardware that must be positioned carefully on the header and manifold. Proper installation ensures accurate monitoring of temperature thresholds and safe heater operation.

How to install Raypak 018853F temperature sensor kit on Avia 404A

Do you need sealant when fitting 018853F sensors into Avia 264A heater

Correct placement of temperature limit kit on Avia header assembly

Step by step install of Raypak 018853F kit to stop overheat faults

Troubleshooting After Replacement

If the heater still shuts down or shows fault codes after replacement, check sensor placement, wire connections, and header contact surfaces. Small mistakes can trigger false readings.

Avia 264A shuts down after new 018853F sensor install what to check

Why does Avia 404A still show overheat fault after 018853F kit

Loose wiring causing limit sensor errors on Raypak Avia heaters

How to reset heater after installing 018853F temperature kit

In-Store Availability and Fit Check

Bring your heater model number when purchasing to confirm compatibility. Counter staff can help identify the right part and make sure you leave with the correct kit.

Buy in store 018853F Raypak sensor kit for Avia 264A heaters

Walk in and compare old limit kit with new 018853F replacement

Available locally 018853F temperature sensor kit for Avia 404A

How to confirm in store that 018853F fits Avia HD NiTek models