Goodman, Amana ASX13 error code 4 flashes
Compressor locked rotor
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.
Quick answer
On Goodman ASX13 (2000s-2010s), 4 flashes is a fault. It means compressor locked rotor. A first thing to check: Failed compressor.
- Applies to
- Goodman ASX13
- Goodman and Amana ASX13, ASZ13, ASXC16, ASZC16 air conditioner flash codes · Air Conditioner · 2000s-2010s
- Type of code
- Fault
- Urgency: Stop using it
- First safe check
- Check the capacitor first, since it is far cheaper than a compressor.
What 4 flashes means on this model
The compressor tried to start and seized. Current surged and the control locked out to protect itself. On this unit that usually means a compressor that has actually failed, not a starting problem.
Symptoms you will notice
- Outdoor unit does not start at all, or hums without running
- Code appears immediately
- Cooling stops completely
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:
- Failed compressor
- Failed capacitor that locked the compressor on start
- Sealed system overcharged, causing liquid lock
- Supply voltage problem at start
- Contactor failure or loose lug
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 capacitor first, since it is far cheaper than a compressor.
- Check the contactor lugs for heat damage and the supply voltage at start.
Do not do these
- ×Do not repeatedly reset. A locked rotor applies maximum stress to the compressor and can damage the contactor and board too.
- ×Do not attempt to free a seized compressor.
When to call a technician
Stop using the appliance and call today
This one is a safety limit, not a nuisance. The control is shutting the unit down to prevent damage or a hazard, and it will keep doing that until the underlying cause is fixed. Running it anyway risks the expensive failure it was designed to prevent.
- 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.
Capacitor swap is reasonable. A compressor is licensed work.
What it costs to fix
Parts
Capacitor $25 to $60 if that is the cause. Compressor $900 to $2,000. Contactor $25 to $70.
Labor
Half a day, plus refrigerant recovery and recharge.
DIY or technician
Capacitor swap is reasonable. A compressor is licensed work.
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
- Models in scope
- Goodman ASX13, 2000s-2010s
- 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.