Goodman, Amana ASX13 error code 1 flash
Long compressor run time
Goodman is the platform name, and your unit may not say it
Amana ASX13 / ASZ13 is the same board with a different badge, so this page covers all of them. The fault, the checks and the parts are identical, which is why there is one page rather than one per brand.
Which models this applies to. This page covers the Goodman and Amana ASX13, ASZ13, ASXC16, ASZC16 air conditioner flash codes.
What is specific to the ASX13 platform
Air conditioner platform. These are not furnace codes.
Your control board does not print the code. It blinks an LED, and you count the flashes against a legend printed on the board or inside the access panel. Count a full cycle before you read it, because the pattern pauses and repeats.
Quick answer
On Goodman ASX13 (2000s-2010s), 1 flash is a fault. It means long compressor run time. A first thing to check: Low refrigerant charge.
- Applies to
- Goodman ASX13
- Goodman and Amana ASX13, ASZ13, ASXC16, ASZC16 air conditioner flash codes · Air Conditioner · 2000s-2010s
- Type of code
- Fault
- Urgency: Needs attention soon
- First safe check
- Clean the outdoor coil and change the filter, then give it a full run cycle.
What 1 flash means on this model
The outdoor unit has been running longer than the control expects for the demand. The system is not reaching temperature inside the time it should, so the compressor is staying on. A charge or airflow problem is behind this far more often than a compressor fault.
Symptoms you will notice
- Outdoor unit runs continuously and never stops
- House cools slowly or never reaches set temperature
- Indoor blower runs constantly
- Code appears after a long run
Common causes
The code tells you what the control detected, not which part failed. These are the causes we see most often, roughly in order of likelihood:
- Low refrigerant charge
- Dirty or restricted outdoor coil
- Dirty filter or restricted ductwork starving the indoor coil
- Failing outdoor fan motor running slow
- Failing compressor losing performance
- Thermostat or sizing problem, running a large system on a small house
What you can safely check
These are homeowner-level checks. None of them need you to open a live electrical compartment or work on gas.
- Clean the outdoor coil and change the filter, then give it a full run cycle.
- Check the outdoor fan speed. A fan that is turning slowly will not move enough air.
- Note how many hours a day the unit runs. An eight hour run on a warm day points at charge or airflow, not at a compressor that has simply worn out.
Do not do these
- ×Do not add refrigerant to a system that is low on charge without finding and fixing the leak.
- ×Do not add extra line set insulation to hide a leak.
When to call a technician
Book a technician, do not keep resetting it
This fault will not clear on its own. Every power cycle gives the control one more failed attempt, and repeated attempts are what turn a cheap part replacement into a seized or contaminated system.
- The refrigerant circuit is sealed and legally requires licensed handling. Opening it without certification releases refrigerant and can put the whole system in violation of regulation, so a low-pressure or high-pressure fault on this equipment is a call-out, not a weekend job.
- If the appliance has stopped mid-cycle, is making a noise you have not heard before, or smells burnt, stop reading here and call. Those are symptoms of something the fault code does not describe well enough.
Coil cleaning and filters are homeowner work. Charge, compressor and fan motor work is licensed.
What it costs to fix
Parts
Filter $8 to $30. Fan motor $250 to $500. Charge $150 to $400 including labour. Contactor $25 to $70.
Labor
Two to four hours.
DIY or technician
Coil cleaning and filters are homeowner work. Charge, compressor and fan motor work is licensed.
Typical US part and labor ranges, 2026. They vary by region, model and contractor, so treat them as a planning figure, not a quote.
Scope of this code
- Code table
- Goodman and Amana ASX13, ASZ13, ASXC16, ASZC16 air conditioner flash codes
- How this model reports the code
- Blinking LED, counted against a legend
- Models in scope
- Goodman ASX13, 2000s-2010s
- How this platform differs
- Air conditioner platform. These are not furnace codes.
- Checked
- Confirm on your own unit
- Find the model number on the data plate, then check this code in the service manual for that model. Manufacturers revise code tables between model years, and a revised board can renumber a fault.