Pentair Pentair SuperFlo VS Variable Speed Pool Pump SPEED LED FLASH Error Fix: Underspeed Fault

A single speed indicator LED is flashing, indicating the pump cannot reach the target RPM for that speed setting. The motor is running below the expected speed. Common causes include a partially blocked impeller, dirty filter creating excessive back pressure, closed or partially closed valve, low voltage supply, or motor issue. Clean the filter and strainer basket. Verify all valves are fully open. Check supply voltage at the pump terminals.

warning2 fixes available✨ Free fix available

Quick Answer

Error SPEED LED FLASH on the Pentair Pentair SuperFlo VS Variable Speed Pool Pump means: Underspeed Fault. The top-ranked community fix is “Test Voltage and Inspect Impeller for Blockage” (medium difficulty, ~45 min, DIY cost: $0-$10). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · pool pump

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 pump 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: $120-$200.

Other Pentair Pentair SuperFlo VS Variable Speed Pool Pump Error Codes

ALL LEDS FLASH

Overcurrent / Motor Protection

Capacitor Failure

Impeller Obstruction

Motor Fault — LED On but Not Running

Pump Lid O-Ring Leak

Motor Bearing Wear

No Power

Shaft Seal Leak

People Also Ask About Pentair Pentair SuperFlo VS Variable Speed Pool Pump Error SPEED LED FLASH

What does error code SPEED LED FLASH mean on a Pentair Pentair SuperFlo VS Variable Speed Pool Pump?

Error code SPEED LED FLASH on the Pentair Pentair SuperFlo VS Variable Speed Pool Pump means: Underspeed Fault. A single speed indicator LED is flashing, indicating the pump cannot reach the target RPM for that speed setting. The motor is running below the expected speed. Common causes include a partially blocked impeller, dirty filter creating excessive back pressure, closed or partially closed valve, low voltage supply, or motor issue. Clean the filter and strainer basket. Verify all valves are fully open. Check supply voltage at the pump terminals.

How do I fix error code SPEED LED FLASH on my Pentair Pentair SuperFlo VS Variable Speed Pool Pump?

The most successful fix is "Test Voltage and Inspect Impeller for Blockage" (medium difficulty, ~45 minutes). Estimated DIY cost: $0-$10. HomeMD has 2 community-ranked fixes for this error.

Is error code SPEED LED FLASH on a Pentair Pentair SuperFlo VS Variable Speed Pool Pump serious?

This error is rated warning severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Pentair Pentair SuperFlo VS Variable Speed Pool Pump error SPEED LED FLASH myself?

Yes — the top-ranked community fix ("Test Voltage and Inspect Impeller for Blockage") is rated medium difficulty and takes about 45 minutes. Tools needed: 7/16 wrench, Multimeter, Flashlight.

How much does it cost to repair Pentair Pentair SuperFlo VS Variable Speed Pool Pump error SPEED LED FLASH?

DIY cost: $0-$10. Professional repair typically costs $120-$200. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Pentair Pentair SuperFlo VS Variable Speed Pool Pump have?

The Pentair Pentair SuperFlo VS Variable Speed Pool Pump has 8 other known error codes, including: ALL LEDS FLASH (Overcurrent / Motor Protection), CAPACITOR FAIL (Capacitor Failure), IMPELLER CLOG (Impeller Obstruction), LED ON NO RUN (Motor Fault — LED On but Not Running), LID ORING LEAK (Pump Lid O-Ring Leak), and 3 more.

What other error codes does the Pentair Pentair SuperFlo VS Variable Speed Pool Pump have?

The Pentair Pentair SuperFlo VS Variable Speed Pool Pump has 8 other known error codes:

ALL LEDS FLASH — Overcurrent / Motor Protection (2 fixes)
CAPACITOR FAIL — Capacitor Failure (2 fixes)
IMPELLER CLOG — Impeller Obstruction (2 fixes)
LED ON NO RUN — Motor Fault — LED On but Not Running (2 fixes)
LID ORING LEAK — Pump Lid O-Ring Leak (2 fixes)
MOTOR BEARING WEAR — Motor Bearing Wear (2 fixes)
NO LEDS — No Power (2 fixes)
SHAFT SEAL LEAK — Shaft Seal Leak (2 fixes)

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