Goodman · Furnace

Goodman GMSS9 / GCSS9 error codes

Goodman and Amana GMSS9, GCSS9, AMSS9, ACSS9 flash codes. 8 codes.

Check this is your model before you read on

The model number on your data plate should start with GMSS9, GCSS9, AMSS9, ACSS9. Flashes 1 through 8. This is a Honeywell platform control with its own wording and its own assignments. It is not the GMV table, even though the numbers look similar.

A Honeywell-platform control with its own wording and its own code assignments. It is not the GMV table.

The same table applies to amana, Daikin models on the same control platform.

How to read this code

Single red LED, counted blinks, with a long pause between groups.

2000s. 8 codes on this control platform.