Error code reference

Carrier Furnace Error Code 11

No previous code stored; stored status codes are erased when power (115VAC or 24VAC) to control is…

No previous code stored; stored status codes are erased when power (115VAC or 24VAC) to control is interrupted or 48 hours after each fault is cleared.

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Step-by-step tests with expected resistance, voltage, and continuity values
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11 on my Carrier furnace

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No previous code stored

From Service Manual 102648, p.20:

1.Access service mode to confirm the active fault code and read stored error history.

2.Measure line voltage at the power cord terminal block. Expected: 120 VAC (L1 to neutral) or 208 to 240 VAC between L1 and L2 under load.

3.Inspect the cord strain relief and terminal block screws for signs of arcing or heat discoloration. Loose connections here mimic an intermittent power failure to the control board.

Part W10911048

Power cord assembly

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