Coleman Furnace Error Codes
An HVAC brand under Johnson Controls, sharing technology with York furnaces.
How Coleman Furnaces Display Error Codes
The furnace has built-in, self diagnostic capability. If a system problem occurs, a fault code is shown by a blinking green LED. It is located behind a clear view port in the blower compartment door. DO NOT turn off furnace power as this action will clear the control's memory of the fault. Flash sequence codes 1 through 6 are as follows: LED will turn "on" for one second and "off" for one second. This pattern will be repeated the number of times equal to the code. All flash code sequences are broken by a 2 second "off" period.
This site covers 1 Coleman furnace model and a total of 7 error code entries. Select your model below to see the full code list with causes and repair guidance.
Coleman Furnace Models
| Model | Type | |
|---|---|---|
| DGAA056BDTA | Single Stage Gas Furnace | → |
High-Severity Coleman Error Codes
These codes indicate conditions that prevent normal furnace operation or involve safety-relevant components such as the gas valve, heat exchanger, or inducer motor. Most require a licensed HVAC technician to diagnose and repair safely.
About Coleman
Coleman Heating & Air Conditioning began as a division of the Coleman Company in 1958. In 1990, the HVAC division was acquired by Evcon, an HVAC-focused business entity. Evcon was subsequently acquired by Johnson Controls in 1996, bringing the Coleman brand into one of the world's largest building technology companies.
Johnson Controls International plc was founded in 1885 by Warren S. Johnson, a professor at Whitewater Normal School in Wisconsin, who had received a patent for the first electric room thermostat in 1883. As of fiscal year 2025, Johnson Controls reported revenue of $23.6 billion and employed approximately 87,000 people worldwide, with headquarters in Cork, Ireland.
Coleman in the Furnace Market
Coleman operates as a residential HVAC brand within Johnson Controls' product portfolio, offering gas furnaces, air conditioners, and heat pumps through an authorized dealer network. Coleman products are manufactured at Johnson Controls' Wichita, Kansas facility alongside the York brand, sharing production resources and engineering. This shared manufacturing platform means Coleman equipment benefits from the same production standards as the York residential line.