Amana Air Conditioners Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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CF
Amana window or PTAC AC displays CF periodically; unit may beep but continues to run.
Filter Cleaning Reminder
E1
An Amana window or PTAC room air conditioner will not run; the display shows E1, and the unit may beep once when buttons are pressed.
Room Thermistor (Indoor Temperature Sensor) Failure
E2
An Amana air conditioner runs briefly then shuts down; the display shows E2, and cooling stops.
Evaporator Coil Thermistor Failure or Freeze Protection Fault
E3
An Amana PTAC or window AC displays E3 and may not cool properly; the unit may shut down intermittently.
Outdoor (Condenser) Thermistor Failure
E4
The unit displays E4 and the compressor does not start or shuts off quickly; this may occur during very hot operation.
High-Pressure Protection / Overheat Fault
E5
The display shows E5 and the unit may not cool or may shut down; this sometimes appears after long operation.
Low-Temperature / Anti-Freeze Protection Fault
E6
An Amana air conditioner displays E6 and will not respond to remote or keypad commands properly.
Communication Error Between the Display Board and the Main Control Board
E7
The unit shows E7 and may not accept commands from the wall thermostat or remote; the PTAC may not switch modes correctly.
Thermostat or Control Input Error
E8
The display shows E8, and the unit may shut down or limit operation; this is often associated with very high or low room temperatures.
Over-Temperature or Under-Temperature Protection
E9
The Amana air conditioner displays E9 and may not start the compressor or fan; this sometimes occurs after a power surge.
EEPROM / Memory Error on Control Board
F1
The Amana central air handler or packaged AC shows F1 on the display; the blower may not run correctly.
Indoor Blower Motor Fault
F2
The Amana central AC or heat pump control shows F2; the system may not cool or may shut down intermittently.
High-Pressure Switch Open
F3
The system displays F3; the compressor may not start or may short-cycle; this is sometimes accompanied by outdoor unit humming.
Low-Pressure Switch Open / Loss of Charge Protection
F4
The Amana central AC control shows F4; the outdoor unit may not run even though the thermostat calls for cooling.
Outdoor Temperature Sensor Fault
F5
The system displays F5; the compressor may be locked out or the system may run in a limited mode.
Discharge Line Temperature Sensor Fault
F6
The Amana communicating thermostat or control shows F6; the system may not respond to thermostat commands.
Communication Fault Between Indoor and Outdoor Units
H1
An Amana heat pump in heating mode shows H1; the outdoor unit may defrost frequently or stop heating.
Defrost Sensor or Defrost Control Fault
H2
The heat pump displays H2; the unit may shut down heating during very cold weather.
Low Outdoor Temperature Lockout or Sensor Error
HI
Display shows HI and unit may shut down or limit operation; often during very high line voltage conditions.
High Line Voltage Protection
LO
Display shows LO and unit does not cool; may indicate low voltage or brownout condition.
Low Line Voltage Protection
PF
Display shows PF and unit may be off after a power outage or interruption.
Power Failure Indication
Symptom
A burning or electrical smell is noticeable when the Amana air conditioner operates.
Overheating Electrical Component
Symptom
A musty or moldy odor comes from the Amana air conditioner when it starts or runs.
Biological Growth on Evaporator Coil and Drain Pan
Symptom
Amana air conditioner blows warm air in cooling mode; compressor and fan appear to run.
Refrigeration Circuit Failure
Symptom
Amana air conditioner display and controls are unresponsive; buttons do not change settings.
User Interface / Keypad Failure
Symptom
Amana air conditioner fan runs but airflow is weak from the front grille or vents.
Restricted Airflow / Blower Performance Issue
Symptom
Amana air conditioner frequently turns on and off in short cycles (short cycling) without reaching the set temperature.
Short Cycling / Control or Capacity Issue
Symptom
Amana air conditioner leaks water inside the room; water drips from the front panel or onto the floor.
Condensate Drainage Failure
Symptom
Amana air conditioner leaks water outside excessively, causing staining or puddles below the unit.
Excessive Condensate Discharge
Symptom
Amana air conditioner makes loud rattling, buzzing, or grinding noises during operation.
Mechanical Noise / Vibration Fault
Symptom
Amana air conditioner powers on but compressor does not start; fan may run continuously with no cooling.
Compressor Start Failure
Symptom
Amana air conditioner remote control does not operate the unit; unit works from front panel only.
Remote Control / IR Receiver Issue
Symptom
Amana air conditioner runs but does not cool the room effectively; air from vents is only slightly cool or room temperature.
Insufficient Cooling Capacity / Poor Heat Transfer
Symptom
Amana air conditioner runs continuously and does not shut off, even when the room feels cold.
Thermostat / Temperature Control Failure
Symptom
Amana air conditioner trips the circuit breaker when it starts or shortly after running.
Overcurrent / Electrical Short
Symptom
Amana air conditioner vibrates excessively, causing the wall or window frame to shake.
Excessive Vibration / Imbalance
Symptom
Amana air conditioner will not turn on at all; no lights or display, fan and compressor do not run.
No Power / Dead Unit
Symptom
Amana heat pump in heating mode runs but delivers little or no warm air; auxiliary heat may not engage.
Heat Pump Heating Performance Issue
Symptom
Frost or ice forms on the indoor coil or front grille of the Amana air conditioner during cooling.
Evaporator Coil Icing
Symptom
Outdoor section of Amana central AC or heat pump is very noisy, with a loud humming or grinding sound.
Outdoor Fan or Compressor Mechanical Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| CF |
Amana window or PTAC AC displays CF periodically; unit may beep but continues to run.
|
Filter Cleaning Reminder | View Details |
| E1 |
An Amana window or PTAC room air conditioner will not run; the display shows E1, and the unit may beep once when buttons are pressed.
|
Room Thermistor (Indoor Temperature Sensor) Failure | View Details |
| E2 |
An Amana air conditioner runs briefly then shuts down; the display shows E2, and cooling stops.
|
Evaporator Coil Thermistor Failure or Freeze Protection Fault | View Details |
| E3 |
An Amana PTAC or window AC displays E3 and may not cool properly; the unit may shut down intermittently.
|
Outdoor (Condenser) Thermistor Failure | View Details |
| E4 |
The unit displays E4 and the compressor does not start or shuts off quickly; this may occur during very hot operation.
|
High-Pressure Protection / Overheat Fault | View Details |
| E5 |
The display shows E5 and the unit may not cool or may shut down; this sometimes appears after long operation.
|
Low-Temperature / Anti-Freeze Protection Fault | View Details |
| E6 |
An Amana air conditioner displays E6 and will not respond to remote or keypad commands properly.
|
Communication Error Between the Display Board and the Main Control Board | View Details |
| E7 |
The unit shows E7 and may not accept commands from the wall thermostat or remote; the PTAC may not switch modes correctly.
|
Thermostat or Control Input Error | View Details |
| E8 |
The display shows E8, and the unit may shut down or limit operation; this is often associated with very high or low room temperatures.
|
Over-Temperature or Under-Temperature Protection | View Details |
| E9 |
The Amana air conditioner displays E9 and may not start the compressor or fan; this sometimes occurs after a power surge.
|
EEPROM / Memory Error on Control Board | View Details |
| F1 |
The Amana central air handler or packaged AC shows F1 on the display; the blower may not run correctly.
|
Indoor Blower Motor Fault | View Details |
| F2 |
The Amana central AC or heat pump control shows F2; the system may not cool or may shut down intermittently.
|
High-Pressure Switch Open | View Details |
| F3 |
The system displays F3; the compressor may not start or may short-cycle; this is sometimes accompanied by outdoor unit humming.
|
Low-Pressure Switch Open / Loss of Charge Protection | View Details |
| F4 |
The Amana central AC control shows F4; the outdoor unit may not run even though the thermostat calls for cooling.
|
Outdoor Temperature Sensor Fault | View Details |
| F5 |
The system displays F5; the compressor may be locked out or the system may run in a limited mode.
|
Discharge Line Temperature Sensor Fault | View Details |
| F6 |
The Amana communicating thermostat or control shows F6; the system may not respond to thermostat commands.
|
Communication Fault Between Indoor and Outdoor Units | View Details |
| H1 |
An Amana heat pump in heating mode shows H1; the outdoor unit may defrost frequently or stop heating.
|
Defrost Sensor or Defrost Control Fault | View Details |
| H2 |
The heat pump displays H2; the unit may shut down heating during very cold weather.
|
Low Outdoor Temperature Lockout or Sensor Error | View Details |
| HI |
Display shows HI and unit may shut down or limit operation; often during very high line voltage conditions.
|
High Line Voltage Protection | View Details |
| LO |
Display shows LO and unit does not cool; may indicate low voltage or brownout condition.
|
Low Line Voltage Protection | View Details |
| PF |
Display shows PF and unit may be off after a power outage or interruption.
|
Power Failure Indication | View Details |
| – |
A burning or electrical smell is noticeable when the Amana air conditioner operates.
|
Overheating Electrical Component | View Details |
| – |
A musty or moldy odor comes from the Amana air conditioner when it starts or runs.
|
Biological Growth on Evaporator Coil and Drain Pan | View Details |
| – |
Amana air conditioner blows warm air in cooling mode; compressor and fan appear to run.
|
Refrigeration Circuit Failure | View Details |
| – |
Amana air conditioner display and controls are unresponsive; buttons do not change settings.
|
User Interface / Keypad Failure | View Details |
| – |
Amana air conditioner fan runs but airflow is weak from the front grille or vents.
|
Restricted Airflow / Blower Performance Issue | View Details |
| – |
Amana air conditioner frequently turns on and off in short cycles (short cycling) without reaching the set temperature.
|
Short Cycling / Control or Capacity Issue | View Details |
| – |
Amana air conditioner leaks water inside the room; water drips from the front panel or onto the floor.
|
Condensate Drainage Failure | View Details |
| – |
Amana air conditioner leaks water outside excessively, causing staining or puddles below the unit.
|
Excessive Condensate Discharge | View Details |
| – |
Amana air conditioner makes loud rattling, buzzing, or grinding noises during operation.
|
Mechanical Noise / Vibration Fault | View Details |
| – |
Amana air conditioner powers on but compressor does not start; fan may run continuously with no cooling.
|
Compressor Start Failure | View Details |
| – |
Amana air conditioner remote control does not operate the unit; unit works from front panel only.
|
Remote Control / IR Receiver Issue | View Details |
| – |
Amana air conditioner runs but does not cool the room effectively; air from vents is only slightly cool or room temperature.
|
Insufficient Cooling Capacity / Poor Heat Transfer | View Details |
| – |
Amana air conditioner runs continuously and does not shut off, even when the room feels cold.
|
Thermostat / Temperature Control Failure | View Details |
| – |
Amana air conditioner trips the circuit breaker when it starts or shortly after running.
|
Overcurrent / Electrical Short | View Details |
| – |
Amana air conditioner vibrates excessively, causing the wall or window frame to shake.
|
Excessive Vibration / Imbalance | View Details |
| – |
Amana air conditioner will not turn on at all; no lights or display, fan and compressor do not run.
|
No Power / Dead Unit | View Details |
| – |
Amana heat pump in heating mode runs but delivers little or no warm air; auxiliary heat may not engage.
|
Heat Pump Heating Performance Issue | View Details |
| – |
Frost or ice forms on the indoor coil or front grille of the Amana air conditioner during cooling.
|
Evaporator Coil Icing | View Details |
| – |
Outdoor section of Amana central AC or heat pump is very noisy, with a loud humming or grinding sound.
|
Outdoor Fan or Compressor Mechanical Failure | View Details |
No matching codes found
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