20 Goodman air conditioner error codes + troubleshooting

An air conditioner is something found in almost all households around the world. People research for hours before buying an AC or any other appliance so that they can have a peaceful life without worrying much about the issues that can occur. However, it is a fact that issues are bound to happen in the long run. Goodman air conditioners are appreciated around the world because of their high quality and reliability.

To facilitate their customers with the best experience, they integrate a Self-Diagnosis feature that displays a specific error code for each issue occurring in the unit. This allows you to know the cause and start doing your thing to take it down. We have gathered all the error codes along with their causes and solutions. Call a technician to inspect the air conditioner if it involves a lot of electronics or you don’t have much knowledge about the suggested solutions.

Goodman air conditioner error code 01

Causes:

This error can be triggered on an AC unit due to many reasons such as:

1. The refrigerant level or refrigerant charge in the unit is less than required.
2. Clogging or restrictions in the liquid line.
3. The blower motor of the indoor unit is malfunctioning or has completely failed.
4. The thermostat of the indoor unit is set at an extremely low level. 

Solutions:

1. Check the refrigerant charge and adjust it according to the outside temperature. Fill the freon gas if needed.
2. Remove debris or anything causing a restriction or clogging in the liquid line. Repair or replace the line as needed.
3. Check the voltages to the blower motor and ensure they are consistent.
4. Check the blower motor for any faults. Repair or replace the motor as needed.
5. Raise the set thermostat on the indoor unit. Replace the thermostat if it is malfunctioning.

It is always recommended to turn OFF the air conditioner before applying any of the solutions suggested above. This is because they include electronics and electricity which can be dangerous if not tackled properly.

Goodman air conditioner error code 02

Causes:

This error is reported by the air conditioner when/if:

1. The unit is experiencing freezing problems.
2. Blockages in the condenser coils, blower, filters, or the condenser itself.
3. The refrigerant level in the AC unit is less than required.
4. The outdoor fan is not working efficiently or the fan motor is faulty.

Solutions:

1. Restart the air conditioner after keeping it OFF for about 1-3 minutes. Energizes the unit multiple times.
2. Contact a service provider to visit your home and thoroughly clean the AC unit including the blower, filters, condenser, and condenser coils.
3. Check the refrigerant level and if it’s below par, get the unit filled with freon gas as required.
4. Remove dust, debris, or something stuck in the fan blades. Repair or replace the fan motor if it is faulty.

Goodman air conditioner error code 03

Causes:

This error is triggered mainly because of two reasons.

1. There is an intermittent thermostat demand in the AC unit.
2. The compressor relay is faulty or has completely stopped working.

When the compressor relay is faulty, the power will not be supplied to the AC compressor and the clutch. So, if the compressor is not starting at all, inspecting the relay is an option.

Solutions:

1. The intermittent thermostat demand is a cycle that usually runs for about 20 minutes. Wait and if the error persists, inspect the thermostat for any faults. Replace it if it’s faulty.
2. Call a technician to check the compressor relay for any faults or malfunctioning. Replace the relay if defective.

Goodman air conditioner error code 04

Causes:

This error is displayed on the air conditioner unit when/if:

1. The bearings in the compressor are not working smoothly.
2. The wiring of the compressor or its run capacitor is pinched, damaged, or loose.
3. The run capacitors of the compressor are faulty or completely failed.
4. Problems of AC unit low line voltages.

Solutions:

Call a technician or an electrician to:

1. Check the compressor and ensure everything is fine and in place. Repair or replace the compressor if needed.
2. Check the capacity level and if it’s low or the run capacitor is broken, replace it with a new one.
3. Check the wiring, connections, and connectors of the run capacitor, compressor, and power supply. Repair the wiring as needed.
4. Check the line voltage and make sure it is in the required range.

Goodman air conditioner error code 05

Causes:

This error is reported when/if:

1. The main power to the AC unit has been disconnected.
2. The compressor protector is not working or has completely failed.
3. The compressor is not perfectly wired to the control.

Solutions:

1. Make sure that the AC unit is properly plugged into the wall socket.

Contact a local technician or an electrician to:

• Check the fuses and circuit breakers for tripping. Replace the fuse if it was blown away.
• Check the wiring and connections between the power supply, main power source, and compressor. Repair or replace wiring as needed.
• Check the compressor for any faults or malfunctioning. Repair or replace the compressor as suggested by the technician.

Goodman air conditioner error code 06, 07

Causes:

This error is triggered on the air conditioner when/if:

1. The run or start winding of the compressor is open.
2. The run capacitor of the compressor is faulty or its wiring is damaged.
3. Compressor wiring to the control has some issues.
4. The working of the compressor or the components itself is faulty.

Solutions:

1. Turn OFF the air conditioner and turn it ON again after a few seconds.

Contact a local technician or an electrician to:

• Check the compressor wiring and make sure that all connections and connectors are fine and in place.
• Check the capacity level of the compressor’s run capacitor and replace the run capacitor if it is faulty.
• Check the compressor itself for any faults. Repair or replace the compressor as needed.

Goodman air conditioner error code 08

Causes:

This error is reported on the air conditioner when/if:

1. The line voltages to the AC unit are low.
2. The line voltages toward the unit are higher than the normal range.

Solutions:

Using a meter or with the assistance of an electrician, check the line voltages of the AC unit. If line voltages are high or low:

1. Check the circuit breakers and ensure they are not tripped.
2. Check the fuse for any damage. Replace the fuses if they are blown away.
3. Check the power cord and make sure it is properly connected to the power supply.
4. Contact an experienced engineer to tweak the system and bring line voltages to the normal condition and range.

Goodman air conditioner error code 09

Causes:

This error is displayed on the air conditioner when/if:

1. The control is detecting that secondary voltages are below 18 VAC.
2. The AC unit’s electricity transformer is overloading.
3. Line voltages are fairly below par.

Solutions:

1. Check the AC fuse and make sure it is not blown. Replace it if damaged.
2. Call a technician to correct the low secondary voltage condition and bring the line voltages to a normal range.
3. Check the transformer for any faults or malfunctioning. Repair or replace the transformer as needed.

Goodman air conditioner error code A2, A3

Causes:

This error is triggered on the air conditioner when/if:

1. Either of the many sensors in your air conditioner had gone bad.
2. One or some of the sensors on your AC unit has an open or short circuit.

Solutions:

1. Check the resistance coefficient of all sensors. If any of the sensors is weak, replace it with a compatible one.
2. Check the wiring and connectors of the sensors and make sure they are in place.
3. Check the wiring between the main PCB and the sensor. Repair wiring as needed.
4. Check the sensor for any malfunction. Replace the sensor if faulty.

Goodman air conditioner error code E5

Causes:

This error is reported on the air conditioner when/if:

1. A short occurred in the low voltage wiring, connections, or connectors.

Solutions:

1. Turn OFF the air conditioner and check the low-voltage wiring in your AC. Repair damaged wires, and loose connectors, or replace elements as needed.
2. Check the fuses for any faults or damages. Replace the fuses if needed.
3. Replace the ordinary or stock fuse with a 3-amp automatic type fuse.

Goodman air conditioner error code EE

Causes:

This error is displayed on the air conditioner when/if:

1. The compressor relay is malfunctioning.
2. Compressor relay contacts are welded and causing issues.

Solutions:

Turn OFF the air conditioner and:

1. Check the AC control for any faults. Replace the control board or PCB if it’s faulty.
2. Check the compressor relay for any malfunction or damage. Repair or replace the relay as needed.

Goodman air conditioner error code b0

Causes:

This error is triggered on the air conditioner when/if:

1. The blower or fan motor of the indoor unit is malfunctioning or completely failed.
2. Debris build-up or some foreign object stuck in the indoor blower.
3. The indoor and outdoor units are unable to communicate with each other.
4. An issue in the communication line.
5. The control board is malfunctioning.

Solutions:

1. Clean the indoor blower and remove it if something is stuck in the blades.
2. Check the blower motor for any malfunction. Repair or replace the motor as needed.
3. Check the communication wire and ensure it is in good shape. Repair wire if damaged.
4. Check the control board and replace it if it is faulty.

Goodman air conditioner error code b9

Causes:

This error is reported on the air conditioner when/if:

1. The indoor fan blower motor is malfunctioning.
2. Dirty or clogged air filters.
3. The ductwork of the AC unit is small or causes restrictions.
4. The indoor unit is not matching with the outdoor unit of the AC system.

Solutions:

1. If the fan blower motor is faulty, try the same solutions as suggested for it in the Goodman air conditioner “Error Code b0”.
2. Take the clogged or dirty filters out and clean them thoroughly using high-pressure water.
3. Clean the ductwork while removing restrictions if there are any. Increase the size of ductwork if it is undersized.
4. Check the label on both units and if the models don’t match, call the company’s sales department and ask them to correct their mistake by delivering compatible units.

Goodman air conditioner error code d0

Causes:

This error is displayed on the air conditioner when/if:

1. The AC unit or its heat pump is connected via wires to the communication system and is integrated with the control module but the module does not have any shared data.

Solutions:

1. Check and make sure that the shared data is compatible with your specified AC model. Also, check the system type which could be legacy or communicating.
2. Repopulate the shared data using the Bluetooth Shared Data Loader BTSDL01.
3. Wire your AC system as a legacy system.
4. Seek professional help or talk to the company representative, if you are unable to take down the error.

It is highly recommended to turn OFF the air conditioner before doing any repair especially when it involves electronics and power-related components.

Goodman air conditioner error code d1, d2

Causes:

This error is triggered on the air conditioner when/if:

1. The air conditioner or heat pump is connected as a communication system but the shared data in the control module is invalid or not compatible with the module.
2. The outdoor unit of the air conditioner requires greater airflow than the airflow capability of the indoor unit.
3. Shared data on the control board is not compatible with the air conditioner system or missing some parameters.

Solutions:

1. Try the same solutions as suggested for the Goodman air conditioner “Error Code d0”.

Goodman air conditioner error code d3

Causes:

This error is reported on the air conditioner when/if:

1. The shared data being sent to the integrated control is not integrating or match with the AC unit’s hardware configuration.

Solutions:

1. Try the same solutions as suggested for the Goodman air conditioner “Error Code d0”.

Goodman air conditioner error code d4

Causes:

This error is displayed on the air conditioner when/if:

1. The shared data on the memory card has been rejected by the PCB or the AC unit.

Solutions:

1. Check the shared state or memory card and make sure it is compatible with your specified AC model and version.
2. If the error persists, re-populate the shared data using the correct Bluetooth Shared Data Loader BTSDL01.

LED Flash Errors/Problems in Goodman Air Conditioner

The Goodman air conditioner LED Flash OFF

Causes & Solutions:

1. This error indicates an internal control fault.
2. The microcontroller is detecting some issues or complete hardware failure.
3. The gas valve is energizing at the time when it should be de-energizing.
4. Call a technician to check the AC system’s related components and replace them as needed.

The Goodman air conditioner LED Flash 1 Blink

Causes & Solutions:

1. This happens when the heating components, cooling components, or compressor tried to start multiple times but failed.
2. Mostly the AC unit will automatically restart and the issue will be resolved.
3. If the error persists, contact a local technician to check the AC system for low voltages, or any other issue in the compressor or heat/cool systems.

The Goodman air conditioner LED Flash 2 Blinks

Causes & Solutions:

1. Blockages, restrictions, water, icing, or any other disturbance in the AC vents can cause the pressure switch to be stuck closed.
2. Clean the vents to remove debris or any other things stuck in them. Seek professional help without thinking for a minute if required.
3. You need to find the pressure switch located near the compressor. Push the reset button and restart the air conditioner unit.

The Goodman air conditioner LED Flash 3 Blinks

Causes & Solutions:

1. The causes and solutions are the same as mentioned for the Goodman air conditioner “LED Flash 2 Blinks”.

The Goodman air conditioner LED Flash 4 Blinks

Causes & Solutions:

1. Airflow issues mostly because of dirty air filters in the AC unit can cause this error.
2. When there is inappropriate airflow, the temperature starts to rise in the heat exchanger and the unit. This causes the open high-temperature limit to trip.
3. Clean the air filters and seek professional help if needed.

The Goodman air conditioner LED Flash 5 Blinks

Causes & Solutions:

1. This is an indication of flame present outside the flame detect mode. Contact a local engineer to rub the flame rod sensor gently using grit sandpaper.
2. Remove the dust and carbon build-up from the rod after the sanding has been completed.

The Goodman air conditioner LED Flash 6 Blinks

Causes & Solutions:

1. This error is reported when the compressor short cycle delay is activated. It can happen because of blocked filters, low refrigerant, frozen evaporator coils, or the air conditioner unit being oversized.
2. Clean the dirty filters and replace them if damaged.
3. Turn OFF the air conditioner for about 15-30 minutes and let the coils defrost.
4. Contact the company representative or a local HVAC professional to measure different parameters and suggest a compatible-sized AC for your room.

The Goodman air conditioner LED Flash 7 Blinks

Causes & Solutions:

1. This error is a clear indication that the limit opened 5 times within the same call for heat.
2. Restart the AC unit and energize it to see if the error goes away.
3. Contact a technician to inspect the system if the error persists.

The Goodman air conditioner LED Flash 8 Blinks

Causes & Solutions:

1. This error is reported when the thermostat of either the indoor or outdoor unit is opened.
2. Clean the vents, and indoor and outdoor units as this can mostly take down the error.
3. If it doesn’t work, call a technician to inspect the system and fix it.

The Goodman air conditioner LED Flash 9 Blinks

Causes & Solutions:

1. This error occurs when the pressure switch is open.
2. Loss of the charge switch is open.
3. Do a thorough cleaning of the air conditioner system.
4. Seek professional help to inspect the AC unit and perform necessary maintenance.

The Goodman air conditioner LED Flash Steady ON

Causes & Solutions:

1. This is not an error but a good indication that the air conditioner is normal and working smoothly without any issues.