Goodman GMVM970803BN 80,000 BTU 97% AFUE Modulating Gas Furnace with Variable-Speed ECM Blower 1-FLASH Error Fix: System Lockout — Retry Limit Exceeded

Error code 1-FLASH on the Goodman GMVM970803BN 80,000 BTU 97% AFUE Modulating Gas Furnace with Variable-Speed ECM Blower means: System Lockout — Retry Limit Exceeded. The furnace has exceeded the maximum number of ignition retry attempts and has entered a safety lockout — the system will not attempt ignition again until power is recycled at the circuit breaker or furnace switch; common causes include a failed igniter, no gas supply, or gas valve failure

The most successful fix is "Test and Replace Igniter or Gas Valve" (medium difficulty, ~45 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

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

Yes — the top-ranked community fix ("Test and Replace Igniter or Gas Valve") is rated medium difficulty and takes about 45 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Nut driver set.

DIY cost: $15-$25. Professional repair typically costs $150-$300. Many homeowners save money by trying the top-ranked community fix first.

The Goodman GMVM970803BN 80,000 BTU 97% AFUE Modulating Gas Furnace with Variable-Speed ECM Blower has 8 other known error codes, including: 10-FLASH (Incorrect Blower Speed / DIP Switch Configuration), 11-FLASH (Communication Error — ComfortNet Bus), 12-FLASH (Blower Motor Fault (ECM)), 13-FLASH (Outdoor Ambient Sensor Fault), 2-FLASH (Pressure Switch Stuck Closed), and 3 more.

Error code 1-FLASH also appears on 2 other Goodman models: GMSS920804CN 80,000 BTU 92% AFUE Single-Stage Gas Furnace, GMVC960804CN 96% AFUE 80,000 BTU Two-Stage Gas Furnace. The fix may vary by model, so check each model's specific page for tailored repair steps.