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BLINK-2

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

Carrier 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace BLINK-2 Error Fix: LED 2 Blinks — Pressure Switch Stuck Closed

The furnace control board LED flashes 2 times, pauses, then repeats. The pressure switch is reading as closed before the draft inducer motor has started. Normally, the inducer motor runs first, creating negative pressure (draft) in the heat exchanger, which then pulls the pressure switch closed to verify proper venting. If the switch reads closed before the inducer runs, something is wrong. Most common causes: the pressure switch has failed in the closed position (the internal diaphragm is stuck), the rubber tubing connecting the pressure switch to the inducer housing has water trapped in it (especially on condensing furnaces — drain the hose), or the pressure switch port on the inducer is clogged or blocked. Disconnect the rubber hose from the pressure switch and blow through it gently to check for blockage. If the switch is physically stuck, it must be replaced (~$15-$50 part).

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error BLINK-2 on the Carrier 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace means: LED 2 Blinks — Pressure Switch Stuck Closed. The top-ranked community fix is “Test and Replace the Pressure Switch” (medium difficulty, ~40 min, DIY cost: $20-$50). 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: $150-$220.

Other Carrier Models with Error BLINK-2

Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE 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 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace Error Codes

BLINK-1

LED 1 Blink — System Lockout (Retries Exceeded)

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-6

LED 6 Blinks — 115V Power Reversed or Neutral Not Grounded

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 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace Error BLINK-2

What does error code BLINK-2 mean on a Carrier 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace?

Error code BLINK-2 on the Carrier 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace means: LED 2 Blinks — Pressure Switch Stuck Closed. The furnace control board LED flashes 2 times, pauses, then repeats. The pressure switch is reading as closed before the draft inducer motor has started. Normally, the inducer motor runs first, creating negative pressure (draft) in the heat exchanger, which then pulls the pressure switch closed to verify proper venting. If the switch reads closed before the inducer runs, something is wrong. Most common causes: the pressure switch has failed in the closed position (the internal diaphragm is stuck), the rubber tubing connecting the pressure switch to the inducer housing has water trapped in it (especially on condensing furnaces — drain the hose), or the pressure switch port on the inducer is clogged or blocked. Disconnect the rubber hose from the pressure switch and blow through it gently to check for blockage. If the switch is physically stuck, it must be replaced (~$15-$50 part).

How do I fix error code BLINK-2 on my Carrier 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace?

The most successful fix is "Test and Replace the Pressure Switch" (medium difficulty, ~40 minutes). Estimated DIY cost: $20-$50. HomeMD has 2 community-ranked fixes for this error.

Is error code BLINK-2 on a Carrier 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage 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 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace error BLINK-2 myself?

Yes — the top-ranked community fix ("Test and Replace the Pressure Switch") is rated medium difficulty and takes about 40 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Non-contact voltage tester, Needle-nose pliers.

How much does it cost to repair Carrier 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace error BLINK-2?

DIY cost: $20-$50. Professional repair typically costs $150-$220. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Carrier 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace have?

The Carrier 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace has 8 other known error codes, including: BLINK-1 (LED 1 Blink — System Lockout (Retries Exceeded)), 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)), BLINK-6 (LED 6 Blinks — 115V Power Reversed or Neutral Not Grounded), and 3 more.

Which other Carrier models have the BLINK-2 error?

Error code BLINK-2 also appears on 3 other Carrier models: Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE 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 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace have?

The Carrier 58STA090-1-16 90,000 BTU 80% AFUE Single-Stage Gas Furnace has 8 other known error codes:

Which other Carrier models have the BLINK-2 error?

Error code BLINK-2 also appears on 3 other Carrier models:

Carrier 58SB0 Comfort 80 Single-Stage 80% AFUE 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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