Smooth glass electric cooktop built into a wooden counter

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Reading furnace LED flash codes by brand family (Carrier, Goodman, ICP, Rheem)

The flash code narrows the fault to one circuit before you open anything. Read it with power on, identify the board family, then use the door label to confirm. Only codes that two independent sources agree on are listed here.

Cross-checked ~10 min easyBrands: Carrier, Bryant, Goodman, Amana, Heil, Tempstar, Rheem, Ruud

Before you start

Do not cut power before reading the code: it erases the stored code.
Rollout and flame-with-valve-off codes are blocked: shut down and refer to a licensed gas technician.

Diagnostic steps

Unlock all 8 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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