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9-FLASH

Daikin · DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower

Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower 9-FLASH Error Fix: Reversed Polarity or Grounding Issue

Reversed line voltage polarity or grounding issue — the 120V power supply wiring has reversed hot and neutral conductors, or the equipment ground is missing

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error 9-FLASH on the Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower means: Reversed Polarity or Grounding Issue. The top-ranked community fix is “Inspect and Correct Furnace Internal Wiring and Grounding” (hard difficulty, ~45 min, DIY cost: $5-$15). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · furnace

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 furnace 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-$180.

Other Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower Error Codes

10-FLASH

Incorrect Blower Speed Configuration

2 fixes

1-FLASH

System Lockout After Ignition Retries

2 fixes

2-FLASH

Pressure Switch Stuck Closed

2 fixes

3-FLASH

Pressure Switch Failed to Close

2 fixes

4-FLASH

High Limit Switch Open

2 fixes

5-FLASH

Flame Sensed Without Gas Valve Call

2 fixes

6-FLASH

Flame Lost During Operation

2 fixes

7-FLASH

Ignition Lockout

2 fixes

People Also Ask About Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower Error 9-FLASH

What does error code 9-FLASH mean on a Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower?

Error code 9-FLASH on the Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower means: Reversed Polarity or Grounding Issue. Reversed line voltage polarity or grounding issue — the 120V power supply wiring has reversed hot and neutral conductors, or the equipment ground is missing

How do I fix error code 9-FLASH on my Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower?

The most successful fix is "Inspect and Correct Furnace Internal Wiring and Grounding" (hard difficulty, ~45 minutes). Estimated DIY cost: $5-$15. HomeMD has 2 community-ranked fixes for this error.

Is error code 9-FLASH on a Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower 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 Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower error 9-FLASH myself?

Yes — the top-ranked community fix ("Inspect and Correct Furnace Internal Wiring and Grounding") is rated hard difficulty and takes about 45 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Wire strippers, Needle-nose pliers.

How much does it cost to repair Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower error 9-FLASH?

DIY cost: $5-$15. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower have?

The Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower has 8 other known error codes, including: 10-FLASH (Incorrect Blower Speed Configuration), 1-FLASH (System Lockout After Ignition Retries), 2-FLASH (Pressure Switch Stuck Closed), 3-FLASH (Pressure Switch Failed to Close), 4-FLASH (High Limit Switch Open), and 3 more.

What other error codes does the Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower have?

The Daikin DM96VE0803BN 80,000 BTU 96% AFUE Variable-Speed Gas Furnace with Multi-Speed Blower has 8 other known error codes:

10-FLASH — Incorrect Blower Speed Configuration (2 fixes)
1-FLASH — System Lockout After Ignition Retries (2 fixes)
2-FLASH — Pressure Switch Stuck Closed (2 fixes)
3-FLASH — Pressure Switch Failed to Close (2 fixes)
4-FLASH — High Limit Switch Open (2 fixes)
5-FLASH — Flame Sensed Without Gas Valve Call (2 fixes)
6-FLASH — Flame Lost During Operation (2 fixes)
7-FLASH — Ignition Lockout (2 fixes)

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