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RED-FLASH

Dolphin · Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft

Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft RED-FLASH Error Fix: Flashing Red LED on Power Supply

The power supply unit shows a flashing red light indicating a motor or drive fault has been detected — check tracks for obstructions, ensure the robot is fully submerged in water, and inspect the cable connection at the power supply

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error RED-FLASH on the Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft means: Flashing Red LED on Power Supply. The top-ranked community fix is “Test and Replace Motor or Drive Components” (hard difficulty, ~60 min, DIY cost: $10-$20). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · pool cleaner

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many pool cleaner repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $180-$250.

Other Dolphin Models with Error RED-FLASH

E10 Automatic Robotic Pool Vacuum Cleaner with Active Scrubber Brush and Top Load Filters for Above-Ground Pools up to 30 ft

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EON 120d Robotic Pool Cleaner with DebrisLock Backwash Filter and SmartMap Navigation for In-Ground Pools up to 50 ft

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Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft

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Nautilus CC Plus Wi-Fi Robotic Pool Vacuum Cleaner with Wall Climbing and Scrubber Brush for In-Ground Pools up to 40 ft

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Premier Robotic Pool Cleaner with Smart Navigation and Multi-Media Filtration for In-Ground Pools up to 50 ft

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Proteus DX3 Robotic Pool Cleaner with Active Scrubber Brush and Wall Climbing for In-Ground Pools up to 33 ft

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Sigma Robotic Pool Cleaner with Gyroscope Navigation and Triple Motor System for In-Ground Pools up to 60 ft

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Triton PS Plus Robotic Pool Cleaner with PowerStream Technology for In-Ground Pools up to 50 ft

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Other Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft Error Codes

APP-CONNECT

App Connection Failure

Brushes Not Spinning

Worn Scrubbing Brushes

2 fixes

CABLE-CORROSION

Cable Connector Corrosion

Cable Deterioration

Cable Tangling

Drive Motor Failure

Filter Basket or Bag Torn

2 fixes

People Also Ask About Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft Error RED-FLASH

What does error code RED-FLASH mean on a Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft?

Error code RED-FLASH on the Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft means: Flashing Red LED on Power Supply. The power supply unit shows a flashing red light indicating a motor or drive fault has been detected — check tracks for obstructions, ensure the robot is fully submerged in water, and inspect the cable connection at the power supply

How do I fix error code RED-FLASH on my Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft?

The most successful fix is "Test and Replace Motor or Drive Components" (hard difficulty, ~60 minutes). Estimated DIY cost: $10-$20. HomeMD has 2 community-ranked fixes for this error.

Is error code RED-FLASH on a Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft error RED-FLASH myself?

Yes — the top-ranked community fix ("Test and Replace Motor or Drive Components") is rated hard difficulty and takes about 60 minutes. Tools needed: T15 Torx screwdriver, Multimeter, Soft brush.

How much does it cost to repair Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft error RED-FLASH?

DIY cost: $10-$20. Professional repair typically costs $180-$250. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft have?

The Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft has 8 other known error codes, including: APP-CONNECT (App Connection Failure), BRUSH-STOP (Brushes Not Spinning), BRUSH-WORN (Worn Scrubbing Brushes), CABLE-CORROSION (Cable Connector Corrosion), CABLE-DAMAGE (Cable Deterioration), and 3 more.

Which other Dolphin models have the RED-FLASH error?

Error code RED-FLASH also appears on 8 other Dolphin models: E10 Automatic Robotic Pool Vacuum Cleaner with Active Scrubber Brush and Top Load Filters for Above-Ground Pools up to 30 ft, EON 120d Robotic Pool Cleaner with DebrisLock Backwash Filter and SmartMap Navigation for In-Ground Pools up to 50 ft, Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft, Nautilus CC Plus Wi-Fi Robotic Pool Vacuum Cleaner with Wall Climbing and Scrubber Brush for In-Ground Pools up to 40 ft, Premier Robotic Pool Cleaner with Smart Navigation and Multi-Media Filtration for In-Ground Pools up to 50 ft, Proteus DX3 Robotic Pool Cleaner with Active Scrubber Brush and Wall Climbing for In-Ground Pools up to 33 ft, and 2 more. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft have?

The Dolphin Nautilus CC Robotic Pool Vacuum Cleaner with Scrubber Brush for In-Ground Pools up to 33 ft has 8 other known error codes:

APP-CONNECT — App Connection Failure (2 fixes)
BRUSH-STOP — Brushes Not Spinning (2 fixes)
BRUSH-WORN — Worn Scrubbing Brushes (2 fixes)
CABLE-CORROSION — Cable Connector Corrosion (2 fixes)
CABLE-DAMAGE — Cable Deterioration (2 fixes)
CABLE-TANGLE — Cable Tangling (2 fixes)
DRIVE-MOTOR — Drive Motor Failure (2 fixes)
FILTER-DAMAGE — Filter Basket or Bag Torn (2 fixes)

Which other Dolphin models have the RED-FLASH error?

Error code RED-FLASH also appears on 8 other Dolphin models:

E10 Automatic Robotic Pool Vacuum Cleaner with Active Scrubber Brush and Top Load Filters for Above-Ground Pools up to 30 ft (pool cleaner) · 2 fixes
EON 120d Robotic Pool Cleaner with DebrisLock Backwash Filter and SmartMap Navigation for In-Ground Pools up to 50 ft (pool cleaner) · 2 fixes
Liberty Cordless Battery-Powered Robotic Pool Cleaner with Multi-Layer Filtration for In-Ground Pools up to 40 ft (pool cleaner) · 2 fixes
Nautilus CC Plus Wi-Fi Robotic Pool Vacuum Cleaner with Wall Climbing and Scrubber Brush for In-Ground Pools up to 40 ft (pool cleaner) · 2 fixes
Premier Robotic Pool Cleaner with Smart Navigation and Multi-Media Filtration for In-Ground Pools up to 50 ft (pool cleaner) · 2 fixes
Proteus DX3 Robotic Pool Cleaner with Active Scrubber Brush and Wall Climbing for In-Ground Pools up to 33 ft (pool cleaner) · 2 fixes
Sigma Robotic Pool Cleaner with Gyroscope Navigation and Triple Motor System for In-Ground Pools up to 60 ft (pool cleaner) · 2 fixes
Triton PS Plus Robotic Pool Cleaner with PowerStream Technology for In-Ground Pools up to 50 ft (pool cleaner) · 2 fixes

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