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BLINK-6

Carrier · Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace

Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace BLINK-6 Error Fix: LED 6 Blinks — 115V Power Reversed or Neutral Not Grounded

The furnace control board LED flashes 6 times, pauses, then repeats. The furnace has detected that the 115V AC power supply has the hot and neutral wires reversed, or that the neutral wire is not properly bonded to ground. Carrier furnaces require correct electrical polarity for the flame sensing circuit to function — the flame sensor works by conducting a tiny DC current through the flame to the grounded burner assembly. If polarity is reversed, this circuit cannot work, and the furnace will fail to prove flame. To check: use a multimeter to verify that the narrow slot of the outlet (hot) reads ~120V to ground, and the wide slot (neutral) reads near 0V to ground. If reversed, the outlet wiring must be corrected by an electrician. If the furnace is hard-wired, check the junction box connections. Also verify that the grounding wire is properly connected. An older home with ungrounded outlets or incorrect wiring can cause this code.

Medium severity2 fixes available

Quick Answer

Error BLINK-6 on the Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace means: LED 6 Blinks — 115V Power Reversed or Neutral Not Grounded. The top-ranked community fix is “Verify and Correct Furnace Power Wiring and Grounding” (medium difficulty, ~60 min, DIY cost: $0-$10). 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-$250.

Other Carrier Models with Error BLINK-6

58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace

furnace · 2 fixes

Carrier 58STA/STX 80,000 BTU 80% AFUE Single-Stage Upflow Gas Furnace

furnace · 2 fixes

Carrier 59TP6A080E17 80,000 BTU 96% AFUE Two-Stage Gas Furnace with Variable-Speed Blower

furnace · 2 fixes

Other Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace Error Codes

BLINK-1

LED 1 Blink — System Lockout (Retries Exceeded)

2 fixes

BLINK-2

LED 2 Blinks — Pressure Switch Stuck Closed

2 fixes

BLINK-3

LED 3 Blinks — Pressure Switch Did Not Close (Draft Safeguard)

2 fixes

BLINK-4

LED 4 Blinks — Open High-Limit Switch (Overheating)

2 fixes

BLINK-5

LED 5 Blinks — Flame Sensed Without Gas Valve Call (Dangerous)

2 fixes

BLINK-7

LED 7 Blinks — Gas Valve Circuit Failure

2 fixes

BLINK-8

LED 8 Blinks — Ignitor Circuit Fault / Low Flame Signal

2 fixes

BLINK-9

LED 9 Blinks — Check Grounding / Reversed Polarity

2 fixes

People Also Ask About Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace Error BLINK-6

What does error code BLINK-6 mean on a Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace?

Error code BLINK-6 on the Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace means: LED 6 Blinks — 115V Power Reversed or Neutral Not Grounded. The furnace control board LED flashes 6 times, pauses, then repeats. The furnace has detected that the 115V AC power supply has the hot and neutral wires reversed, or that the neutral wire is not properly bonded to ground. Carrier furnaces require correct electrical polarity for the flame sensing circuit to function — the flame sensor works by conducting a tiny DC current through the flame to the grounded burner assembly. If polarity is reversed, this circuit cannot work, and the furnace will fail to prove flame. To check: use a multimeter to verify that the narrow slot of the outlet (hot) reads ~120V to ground, and the wide slot (neutral) reads near 0V to ground. If reversed, the outlet wiring must be corrected by an electrician. If the furnace is hard-wired, check the junction box connections. Also verify that the grounding wire is properly connected. An older home with ungrounded outlets or incorrect wiring can cause this code.

How do I fix error code BLINK-6 on my Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace?

The most successful fix is "Verify and Correct Furnace Power Wiring and Grounding" (medium difficulty, ~60 minutes). Estimated DIY cost: $0-$10. HomeMD has 2 community-ranked fixes for this error.

Is error code BLINK-6 on a Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace 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 Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace error BLINK-6 myself?

Yes — the top-ranked community fix ("Verify and Correct Furnace Power Wiring and Grounding") is rated medium difficulty and takes about 60 minutes. Tools needed: Multimeter, Voltage tester, Phillips screwdriver, Wire strippers.

How much does it cost to repair Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace error BLINK-6?

DIY cost: $0-$10. Professional repair typically costs $120-$250. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace have?

The Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace has 8 other known error codes, including: BLINK-1 (LED 1 Blink — System Lockout (Retries Exceeded)), BLINK-2 (LED 2 Blinks — Pressure Switch Stuck Closed), BLINK-3 (LED 3 Blinks — Pressure Switch Did Not Close (Draft Safeguard)), BLINK-4 (LED 4 Blinks — Open High-Limit Switch (Overheating)), BLINK-5 (LED 5 Blinks — Flame Sensed Without Gas Valve Call (Dangerous)), and 3 more.

Which other Carrier models have the BLINK-6 error?

Error code BLINK-6 also appears on 3 other Carrier models: 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace, Carrier 58STA/STX 80,000 BTU 80% AFUE Single-Stage Upflow Gas Furnace, Carrier 59TP6A080E17 80,000 BTU 96% AFUE Two-Stage Gas Furnace with Variable-Speed Blower. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace have?

The Carrier Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE Gas Furnace has 8 other known error codes:

Which other Carrier models have the BLINK-6 error?

Error code BLINK-6 also appears on 3 other Carrier models:

58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace (furnace) · 2 fixes
Carrier 58STA/STX 80,000 BTU 80% AFUE Single-Stage Upflow Gas Furnace (furnace) · 2 fixes
Carrier 59TP6A080E17 80,000 BTU 96% AFUE Two-Stage Gas Furnace with Variable-Speed Blower (furnace) · 2 fixes

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