Goodman, Amana APG13 error code 2 flashes
Open end centrifugal switch
Goodman is the platform name, and your unit may not say it
Amana APG13 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 APG13 (2000s), 2 flashes is a fault. It means open end centrifugal switch. A first thing to check: Failed outdoor fan motor.
- Applies to
- Goodman APG13
- Goodman and Amana APG13, GPG13, APG15 combined furnace and AC flash codes · Furnace · 2000s
- Type of code
- Fault
- Urgency: Needs attention soon
- First safe check
- Look at the outdoor fan. If it is not turning freely by hand, or the blades look bent, that is the motor.
What 2 flashes means on this model
A centrifugal switch on the outdoor unit is the speed switch that tells the control the fan has come up to speed. Two flashes means an end switch is open, which on this unit usually points at a fan motor problem, a failed switch itself, or a wiring issue between the two.
Symptoms you will notice
- Outdoor fan does not run, or runs slowly
- Compressor may run but the unit will not cool properly
- Fan hums without spinning up
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 outdoor fan motor
- Failed capacitor
- Failed centrifugal or end switch
- Loose or corroded wiring in the outdoor unit
- Fan motor seized
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.
- Look at the outdoor fan. If it is not turning freely by hand, or the blades look bent, that is the motor.
- Check the capacitor for bulging.
- Look for a humming fan that does not start, which is a seized motor.
Do not do these
- ×Do not reach into the fan with the power on.
- ×Do not leave the unit running with a non-moving condenser fan. It will overheat the compressor.
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.
- This is a fuel-burning appliance, so treat anything involving a burner, gas valve or flue as technician work. If you smell gas at any point, leave the property and call the gas utility from outside rather than continuing to diagnose.
- 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.
A capacitor swap is reasonable. A motor swap means working with refrigerant lines, which is licensed work.
What it costs to fix
Parts
Fan motor $250 to $500. Capacitor $25 to $60. Centrifugal switch $30 to $90.
Labor
Two to three hours, more if the refrigerant lines have to be recovered.
DIY or technician
A capacitor swap is reasonable. A motor swap means working with refrigerant lines, which 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 APG13, GPG13, APG15 combined furnace and AC flash codes
- Models in scope
- Goodman APG13, 2000s
- 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.