19 brands · diagnostic reference

Compiled by
Jaylan Jones

· compiled from NOAA, EPA and Oklahoma state sources

HVAC error codes by brand

Furnaces and mini splits report faults as flash patterns or alphanumeric codes, and every manufacturer uses a different scheme. Find your brand below.

Answered 24/7 · statewide

Brands that share a code table
Several manufacturers are the same company under different badges, which is useful when documentation is hard to find. Goodman and Amana share a platform. Carrier, Bryant and Payne use one numeric scheme. Trane and American Standard are identical. York, Luxaire and Coleman match. Rheem and Ruud are the same. Tempstar, Heil, Comfortmaker and Arcoaire are all International Comfort Products.

Goodman & Amana
Code reference


Carrier, Bryant & Payne
Code reference


Trane & American Standard
Code reference


York, Luxaire & Coleman
Code reference


Rheem & Ruud
Code reference


Tempstar, Heil, Comfortmaker & Arcoaire
Code reference


Lennox
Code reference


Nordyne, Frigidaire, Maytag & Tappan
Code reference


Mitsubishi mini split
Code reference


Daikin
Code reference


Fujitsu mini split
Code reference


LG mini split
Code reference

System down in Oklahoma?

Oklahoma summers run past 100°F and ice storms take the power out for days.
Neither is a good time to wait on a callback.