Frigidaire 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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E1
Unit stops cooling and displays E1 on the control panel; buttons may still respond but compressor will not run.
Room Temperature Sensor (Thermistor) Fault
E2
Frigidaire air conditioner displays E2 and may shut down cooling; fan may still run intermittently.
Evaporator Coil Temperature Sensor Fault
E3
Unit shows E3 and stops cooling; compressor may not start or may shut off quickly.
Outdoor (Condenser) Temperature Sensor Fault
E4
Frigidaire air conditioner displays E4 and may shut down or run only the fan.
Defrost / Frost Protection Sensor or Overload Fault (model-dependent)
E5
Unit shows E5 and may stop cooling or limit operation; sometimes associated with high temperature or overload.
Overcurrent / Overload Protection or Voltage Error (model-dependent)
E6
Frigidaire air conditioner displays E6 and may not respond correctly to the remote control.
Communication Error Between Display Board and Main PCB / Remote Receiver Fault
E7
Unit shows E7 and may not operate in certain modes or may shut down unexpectedly.
Mode Conflict / EEPROM or Configuration Error
EC
Frigidaire window or portable AC displays EC and stops cooling; fan may continue to run.
Refrigerant System Leak / Low Refrigerant Protection
ES
Display shows ES and the unit may not cool correctly; temperature reading may be inaccurate.
Sensor Error (Generic) – Often Room or Evaporator Sensor
F0
Frigidaire portable air conditioner displays F0 and may stop cooling; fan may still run.
Low Refrigerant Protection / Refrigeration System Fault (model-dependent)
F1
Portable or window Frigidaire AC displays F1 and may not cool properly.
Indoor Ambient Temperature Sensor Error
F2
Frigidaire portable AC shows F2 and may shut down cooling or run erratically.
Evaporator Coil Sensor Error
F3
Portable Frigidaire AC displays F3 and may stop cooling or show abnormal temperature readings.
Condenser Coil Sensor Error
F4
Frigidaire portable AC shows F4 and may shut down or limit operation.
Tank Full / Condensate Pump or Float Switch Error (portable models)
F5
Portable Frigidaire AC displays F5 and may stop cooling or run only the fan.
High Temperature Protection / Overheat Error
HI
Display shows HI and the unit may run continuously or struggle to reach set temperature.
High Room Temperature Indication / Sensor or Load Issue
HS
Display shows HS and the unit may run at reduced capacity or cycle differently.
High Temperature Sensing / Heat Safety Mode
LO
Display shows LO and the unit may not cool or may cycle oddly; temperature setting cannot be raised above a certain point.
Low Temperature Protection / Display Indication
P1
Frigidaire portable air conditioner displays P1 and stops cooling; unit may beep and show a water icon.
Internal Condensate Tank Full
P2
Portable Frigidaire AC shows P2 and may stop cooling or reduce performance.
High Condensate Level / Pump Protection (pump-equipped models)
PF
Display shows PF and the unit shuts off or restarts unexpectedly after a power interruption.
Power Failure Detection
Symptom
Air conditioner runs but does not cool the room; air from the front grille is only slightly cool or room temperature.
Loss of Cooling Capacity / Refrigerant or Airflow Problem
Symptom
Burning or electrical smell from the unit during operation.
Overheating Electrical Component
Symptom
Clicking or buzzing noise from the control area when the compressor should start, but compressor does not run.
Relay Chatter / Start Circuit Problem
Symptom
Control panel buttons do not respond or respond intermittently; display may flicker.
Keypad / User Interface Failure
Symptom
Evaporator coil repeatedly freezes over with ice, causing poor or no airflow.
Evaporator Freeze-Up
Symptom
Excessive water dripping from the back of the unit or splashing onto the wall or ground.
Excess Condensate / Drain Management Issue
Symptom
High-pitched squealing or grinding noise from the indoor section when the fan is running.
Blower Motor or Wheel Bearing Failure
Symptom
Loud rattling or vibrating noise during operation, especially when the compressor runs.
Mechanical Vibration / Loose Components
Symptom
Musty or moldy odor from the air conditioner when it starts or runs.
Biological Growth in Evaporator and Drain System
Symptom
Remote control does not operate the unit, but front panel buttons work.
Remote Control or IR Receiver Failure
Symptom
Unit blows warm air in cooling mode or cold air in heating mode (for heat pump models) intermittently.
Mode Reversal / Reversing Valve or Control Fault (heat pump models)
Symptom
Unit does not respond to changes in temperature setting; room becomes too cold or too warm.
Thermostat Control / Sensor Calibration Issue
Symptom
Unit frequently trips the household circuit breaker when compressor starts or shortly after.
Overcurrent / Short Circuit
Symptom
Unit leaks water inside the room from the front or bottom of the cabinet.
Condensate Drainage Failure
Symptom
Unit runs but airflow from the front grille is very weak, even on high fan speed.
Restricted Airflow / Blower Problem
Symptom
Unit turns on and off frequently (short cycling), running only a few minutes at a time.
Short Cycling / Control or Sizing Issue
Symptom
Unit turns on but compressor does not start; only the fan runs and no cooling occurs.
Compressor Start Failure
Symptom
Unit will not turn on at all; no lights or display when plugged in.
No Power / Dead Control
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Unit stops cooling and displays E1 on the control panel; buttons may still respond but compressor will not run.
|
Room Temperature Sensor (Thermistor) Fault | View Details |
| E2 |
Frigidaire air conditioner displays E2 and may shut down cooling; fan may still run intermittently.
|
Evaporator Coil Temperature Sensor Fault | View Details |
| E3 |
Unit shows E3 and stops cooling; compressor may not start or may shut off quickly.
|
Outdoor (Condenser) Temperature Sensor Fault | View Details |
| E4 |
Frigidaire air conditioner displays E4 and may shut down or run only the fan.
|
Defrost / Frost Protection Sensor or Overload Fault (model-dependent) | View Details |
| E5 |
Unit shows E5 and may stop cooling or limit operation; sometimes associated with high temperature or overload.
|
Overcurrent / Overload Protection or Voltage Error (model-dependent) | View Details |
| E6 |
Frigidaire air conditioner displays E6 and may not respond correctly to the remote control.
|
Communication Error Between Display Board and Main PCB / Remote Receiver Fault | View Details |
| E7 |
Unit shows E7 and may not operate in certain modes or may shut down unexpectedly.
|
Mode Conflict / EEPROM or Configuration Error | View Details |
| EC |
Frigidaire window or portable AC displays EC and stops cooling; fan may continue to run.
|
Refrigerant System Leak / Low Refrigerant Protection | View Details |
| ES |
Display shows ES and the unit may not cool correctly; temperature reading may be inaccurate.
|
Sensor Error (Generic) – Often Room or Evaporator Sensor | View Details |
| F0 |
Frigidaire portable air conditioner displays F0 and may stop cooling; fan may still run.
|
Low Refrigerant Protection / Refrigeration System Fault (model-dependent) | View Details |
| F1 |
Portable or window Frigidaire AC displays F1 and may not cool properly.
|
Indoor Ambient Temperature Sensor Error | View Details |
| F2 |
Frigidaire portable AC shows F2 and may shut down cooling or run erratically.
|
Evaporator Coil Sensor Error | View Details |
| F3 |
Portable Frigidaire AC displays F3 and may stop cooling or show abnormal temperature readings.
|
Condenser Coil Sensor Error | View Details |
| F4 |
Frigidaire portable AC shows F4 and may shut down or limit operation.
|
Tank Full / Condensate Pump or Float Switch Error (portable models) | View Details |
| F5 |
Portable Frigidaire AC displays F5 and may stop cooling or run only the fan.
|
High Temperature Protection / Overheat Error | View Details |
| HI |
Display shows HI and the unit may run continuously or struggle to reach set temperature.
|
High Room Temperature Indication / Sensor or Load Issue | View Details |
| HS |
Display shows HS and the unit may run at reduced capacity or cycle differently.
|
High Temperature Sensing / Heat Safety Mode | View Details |
| LO |
Display shows LO and the unit may not cool or may cycle oddly; temperature setting cannot be raised above a certain point.
|
Low Temperature Protection / Display Indication | View Details |
| P1 |
Frigidaire portable air conditioner displays P1 and stops cooling; unit may beep and show a water icon.
|
Internal Condensate Tank Full | View Details |
| P2 |
Portable Frigidaire AC shows P2 and may stop cooling or reduce performance.
|
High Condensate Level / Pump Protection (pump-equipped models) | View Details |
| PF |
Display shows PF and the unit shuts off or restarts unexpectedly after a power interruption.
|
Power Failure Detection | View Details |
| – |
Air conditioner runs but does not cool the room; air from the front grille is only slightly cool or room temperature.
|
Loss of Cooling Capacity / Refrigerant or Airflow Problem | View Details |
| – |
Burning or electrical smell from the unit during operation.
|
Overheating Electrical Component | View Details |
| – |
Clicking or buzzing noise from the control area when the compressor should start, but compressor does not run.
|
Relay Chatter / Start Circuit Problem | View Details |
| – |
Control panel buttons do not respond or respond intermittently; display may flicker.
|
Keypad / User Interface Failure | View Details |
| – |
Evaporator coil repeatedly freezes over with ice, causing poor or no airflow.
|
Evaporator Freeze-Up | View Details |
| – |
Excessive water dripping from the back of the unit or splashing onto the wall or ground.
|
Excess Condensate / Drain Management Issue | View Details |
| – |
High-pitched squealing or grinding noise from the indoor section when the fan is running.
|
Blower Motor or Wheel Bearing Failure | View Details |
| – |
Loud rattling or vibrating noise during operation, especially when the compressor runs.
|
Mechanical Vibration / Loose Components | View Details |
| – |
Musty or moldy odor from the air conditioner when it starts or runs.
|
Biological Growth in Evaporator and Drain System | View Details |
| – |
Remote control does not operate the unit, but front panel buttons work.
|
Remote Control or IR Receiver Failure | View Details |
| – |
Unit blows warm air in cooling mode or cold air in heating mode (for heat pump models) intermittently.
|
Mode Reversal / Reversing Valve or Control Fault (heat pump models) | View Details |
| – |
Unit does not respond to changes in temperature setting; room becomes too cold or too warm.
|
Thermostat Control / Sensor Calibration Issue | View Details |
| – |
Unit frequently trips the household circuit breaker when compressor starts or shortly after.
|
Overcurrent / Short Circuit | View Details |
| – |
Unit leaks water inside the room from the front or bottom of the cabinet.
|
Condensate Drainage Failure | View Details |
| – |
Unit runs but airflow from the front grille is very weak, even on high fan speed.
|
Restricted Airflow / Blower Problem | View Details |
| – |
Unit turns on and off frequently (short cycling), running only a few minutes at a time.
|
Short Cycling / Control or Sizing Issue | View Details |
| – |
Unit turns on but compressor does not start; only the fan runs and no cooling occurs.
|
Compressor Start Failure | View Details |
| – |
Unit will not turn on at all; no lights or display when plugged in.
|
No Power / Dead Control | View Details |
No matching codes found
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