🔌 Watkins 76858 Heater Relay Board (Eagle, PCB) – For Caldera & Hot Spring Spas

Part #76858 | Official OEM Replacement Board | Compatible with Eagle Control Systems

The Watkins 76858 Heater Relay Board is a factory OEM replacement for select Caldera and Hot Spring spas equipped with Eagle control systems. This relay PCB (Printed Circuit Board) manages heater operations, ensuring reliable spa heating and system safety.

• ✅ Direct Replacement – Designed to fit Caldera and Hot Spring models with Eagle control systems (check your spa’s manual or contact support for compatibility)
• 🔧 OEM Quality – Manufactured by Watkins for precise fit and long-lasting performance
• 🛡️ Restores Heater Function – Replaces failed or malfunctioning heater relay boards to bring your spa back to full functionality
• 📦 Includes: 1 replacement relay board (PCB), installation instructions

🔍 Compatibility

• Hot Spring Spas (with Eagle control systems, 2012+): Vista, Grandee, Envoy, Aria, Vanguard, Jetsetter, Prodigy, Sovereign, and more
• Caldera Spas (with Eagle control systems)
• Also fits select Limelight and Tiger River models (consult manual)

🛠️ Installation & Usage

1. Power down spa and disconnect from power source.
2. Remove spa panel to access control box.
3. Replace old relay board with new 76858 PCB.
4. Reconnect wiring as per included instructions.
5. Restore power and test spa operation.

⚠️ For safety, installation by a qualified technician is recommended.

♻️ Replaces These Boards

• Hot Spring 76858
• Caldera 76858
• OEM Eagle Spa Relay Boards (confirm part numbers)

⭐ Why Choose Genuine Watkins Parts?

• Guaranteed compatibility and reliability
• Preserves warranty and optimal spa performance
• Tested for safety and durability by the manufacturer

🏆 Premier Pool & Spa is your trusted source for genuine Watkins, Caldera, and Hot Spring replacement parts. Contact us with your spa’s serial number for expert help!