Jandy Pool Equipment Error Code AUX Lockout: How to Fix It

Medium 45-90 minutes Medium Severity Verified June 2026
Error Code
AUX Lockout
Brand
Jandy
Product Type
pool_equipment
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
45-90 minutes
The Jandy AUX Lockout error indicates that one or more auxiliary equipment relays have been locked out due to overcurrent, short circuit, or equipment malfunction. This safety feature protects your pool equipment from electrical damage but prevents auxiliary devices like lights, heaters, or pumps from operating.
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Tools You'll Need

How to Fix Error Code AUX Lockout

  1. Power Down the System

    Always disconnect power before inspecting electrical connections to prevent shock or electrocution.
  2. Check Auxiliary Equipment Connections

  3. Inspect for Water Damage

    Never touch electrical equipment with wet hands or in wet conditions.
  4. Test Individual Auxiliary Devices

  5. Check Relay Panel

    Ensure power is off before opening the control panel.
  6. Reset the System

  7. Test Auxiliary Functions

Parts You May Need

Auxiliary relay
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Waterproof wire connectors
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Pool light transformer
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Junction box gasket
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Auxiliary relay
Check Price on Amazon
Waterproof wire connectors
Check Price on Amazon
Pool light transformer
Check Price on Amazon
Junction box gasket
Check Price on Amazon
Auxiliary relay
Check Price on Amazon
Waterproof wire connectors
Check Price on Amazon
Pool light transformer
Check Price on Amazon
Junction box gasket
Check Price on Amazon
Auxiliary relay
Check Price on Amazon
Waterproof wire connectors
Check Price on Amazon
Pool light transformer
Check Price on Amazon
Junction box gasket
Check Price on Amazon
Auxiliary relay
Check Price on Amazon
Waterproof wire connectors
Check Price on Amazon
Pool light transformer
Check Price on Amazon
Junction box gasket
Check Price on Amazon
Auxiliary relay
Check Price on Amazon
Waterproof wire connectors
Check Price on Amazon
Pool light transformer
Check Price on Amazon
Junction box gasket
Check Price on Amazon
Auxiliary relay
Check Price on Amazon
Waterproof wire connectors
Check Price on Amazon
Pool light transformer
Check Price on Amazon
Junction box gasket
Check Price on Amazon
Auxiliary relay
Check Price on Amazon
Waterproof wire connectors
Check Price on Amazon
Pool light transformer
Check Price on Amazon
Junction box gasket
Check Price on Amazon
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When to Call a Professional

Call a certified pool technician if you find damaged auxiliary equipment, burned relays, or if the lockout persists after following all troubleshooting steps. Also seek professional help if you're uncomfortable working with electrical systems or if multiple auxiliary devices are failing simultaneously.

Frequently Asked Questions

What causes Jandy AUX Lockout error?
AUX Lockout is typically caused by overcurrent conditions, short circuits in auxiliary equipment, water infiltration, faulty relays, or defective connected devices like pool lights or heaters.
Can I reset Jandy AUX Lockout myself?
Yes, you can reset the lockout through the control panel menu after identifying and fixing the underlying cause. However, simply resetting without addressing the root problem will cause the error to return.
Is it safe to use my pool with AUX Lockout error?
The main pool functions may still work, but auxiliary equipment will be disabled. While generally safe for swimming, you should address the error promptly to restore full functionality and prevent potential equipment damage.
How much does it cost to fix Jandy AUX Lockout?
Costs vary depending on the cause. Simple connection fixes cost nothing, while relay replacement runs $20-50, and auxiliary equipment replacement can range from $100-500 depending on the device.
Will AUX Lockout damage my pool equipment?
The lockout is actually a protective feature that prevents damage to your equipment. However, ignoring the underlying cause that triggered the lockout could lead to more serious and expensive equipment failures.