Goodman, Amana ASX13 error code 9 flashes
Low pilot voltage
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), 9 flashes is a fault. It means low pilot voltage. A first thing to check: Low supply voltage to the unit.
- Applies to
- Goodman ASX13
- Goodman and Amana ASX13, ASZ13, ASXC16, ASZC16 air conditioner flash codes · Air Conditioner · 2000s-2010s
- Type of code
- Fault
- Urgency: Book a technician
- First safe check
- Check the supply voltage at the furnace disconnect.
What 9 flashes means on this model
This is a service code used while checking gas pressure, not a fault you will see in normal operation. It reports that pilot voltage is below the level the check needs. If you are seeing it on a display rather than a gauge, the control has lost a setting or the sensor circuit has a problem.
Symptoms you will notice
- Code appears on a gas furnace or boiler display
- Unit may not hold a stable flame
- Code may appear during a service call rather than in normal use
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 supply voltage to the unit
- Failed igniter or igniter control module
- Loose ground
- Failed flame sensing circuit
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.
- Check the supply voltage at the furnace disconnect.
- Check the burner ground screw is clean and tight.
Do not do these
- ×Do not adjust gas pressure yourself.
- ×Do not light the burner manually to work around a sensing problem.
When to call a technician
Worth scheduling, and worth your own checks first
You can usually keep living with this for a short while, but it will not fix itself. Do the safe checks below first, because a tripped switch or a blocked airflow is a five-minute fix that would otherwise cost you a service call.
- 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.
Voltage and ground checks are fine. Ignition module work is not.
What it costs to fix
Parts
Igniter $40 to $90. Ignition control $150 to $350. Control board $250 to $500.
Labor
One to two hours.
DIY or technician
Voltage and ground checks are fine. Ignition module work is not.
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.