Error code reference

Goodman Air Conditioner Error Code nP

Window Switch Lockout (LS & INN open) - unit will not condition space with door or window open.

SourceGoodman PTAC/PTHP - Service Manual: R-410A LED M70 Control (RS4200005R11)p. 46-47

Goodman codes Goodman air conditioner codes

Diagnostic procedure

The full nP procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Close Room Door or Window.

SourceGoodman PTAC/PTHP - Service Manual: R-410A LED M70 Control (RS4200005R11)p. 46-47

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More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

1 manual in the MyPros+ library documents this code for Goodman air conditioner.

Models covered by the manuals that document this code

RS4200005R11

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The full nP procedure

Where this code is documented

Models covered by the manuals that document this code

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