475985 | Pentair Automatic Gas Shut Off Switch For ETI 400 Heaters | 150°

The Pentair 475985 Automatic Gas Shut-Off Switch (AGS) is an OEM replacement designed for ETI 400 High-Efficiency Pool and Spa Heaters. This safety component automatically cuts off the gas supply if water temperature rises above 150°F, protecting both equipment and users from overheating hazards. By preventing unsafe operating conditions, the AGS switch plays a critical role in maintaining heater reliability and long-term performance. Built to Pentair’s specifications with durable materials, it provides consistent safety protection and ensures proper integration with ETI 400 systems. Regular inspection and timely replacement of this switch are essential for keeping your pool heating system safe and dependable.

Highlights

• OEM Safety Switch: Pentair 475985 AGS is specifically designed for ETI 400 High-Efficiency Heaters, ensuring proper fit and reliable operation.

• Automatic Gas Shut-Off: Cuts off gas supply if water temperature exceeds 150°F, protecting the system from overheating and potential hazards.

• Prevents Damage: Helps avoid costly equipment failures by ensuring the heater never operates beyond safe temperature thresholds.

• Durable OEM Construction: Manufactured with high-quality materials to Pentair standards, providing reliable long-term use in pool and spa environments.

• Critical Safety Function: An essential safeguard that ensures safe operation, keeping pool heating systems compliant with safety requirements.

• Maintains System Reliability: Supports consistent heater performance by preventing unsafe operating conditions and preserving system integrity.

• Essential Maintenance Part: Replacing the AGS switch as needed helps ensure the long-term safety and efficiency of ETI 400 heaters.

Includes

• (1) Pentair 475985 AGS

Compatibility

• Pentair ETI 400 Heaters

Additional Info

Looking for the OEM Pentair Automatic Gas Shut-Off Switch (AGS) 475985? This section covers installation, safety, and troubleshooting questions for Pentair ETI 400 High-Efficiency Heaters, especially for customers shopping in store.

Installing the Pentair 475985 AGS Switch

The AGS installs into the ETI 400 heater to monitor water temperature. Correct placement ensures the gas supply is shut off if temperatures exceed 150°F.

How do I install the Pentair 475985 AGS switch in my ETI 400 heater?

Can I buy the 475985 shut-off switch in store at Discount Pool Mart today?

Do I need tools to replace the AGS switch safely?

Is the 475985 a direct replacement for all ETI 400 models?

Troubleshooting Heater Safety Issues

If your heater is shutting down unexpectedly, the AGS may be responding to high temperatures or may be faulty. Replacing with the OEM 475985 restores safety.

Why is my ETI 400 heater shutting off during normal operation?

Can a faulty AGS switch cause nuisance shutdowns?

How do I test if the 475985 shut-off switch is failing?

Does Discount Pool Mart stock the 475985 for urgent replacements?

Finding the Right Part In Store

The 475985 is an OEM Pentair safety component designed for ETI 400 heaters. Bringing the SKU ensures fast identification at the service counter.

Where can I buy the Pentair 475985 AGS switch near me?

Can I confirm store stock before driving in for the 475985?

Is the AGS switch sold in sealed OEM packaging in store?

Is this part normally stocked year-round at Discount Pool Mart?

Diagram