Goodman HVAC Error Codes

6 error codes for Goodman hvac models. Each links to the full diagnostic procedure from the service manual.

CodeDescription

1Ignition failure, open rollout switch, or open auxiliary limit switch detected…2Inducer end switch is open when it should be closed, preventing ignition…3End switch is closed without inducer motor running, indicating a stuck or…4Open main limit switch detected during operation.5False flame sensed by the ignition control, indicating a sticking gas valve or…6Compressor output delay or anti-cycle timer active (3-minute compressor delay).

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Step-by-step tests with expected resistance, voltage, and continuity values
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Ignition failure, open rollout switch, or open

From Service Manual 364380, p.32:

1.Check gas flow, gas pressure, gas valve, flame sensor, flame rollout, and auxiliary limit.

2.Measure control board supply voltage at the test points. Expected: 12 VDC and 5 VDC; a drop below 4.75 VDC on the logic rail points to a failed onboard regulator.

3.Inspect all connectors on the main control for corrosion, thermal stress, or backed-out pins. Reseat each connector with the power disconnected.

Part WPW10804018

Electronic control board

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