AIRCARE
AIRCARE Humidifiers & Dehumidifiers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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CF
AIRCARE evaporative console humidifier displays CF and stops running even though there is water in the tank.
Filter Change Reminder / Wick Filter Service Required
E1
AIRCARE digital humidifier or dehumidifier displays E1 and will not operate or shuts down shortly after starting.
Room Temperature Sensor (Thermistor) Fault
E2
AIRCARE dehumidifier shows E2 and stops dehumidifying or will not start.
Humidity Sensor (RH Sensor) Fault
E3
AIRCARE dehumidifier displays E3 and the compressor will not run or shuts off quickly.
Evaporator Coil Temperature Sensor Fault / Defrost Sensor Error
E4
AIRCARE dehumidifier shows E4 and will not run or shuts down shortly after starting.
Refrigeration System / High-Pressure or Overload Protection Error (Control Interpretation)
E5
AIRCARE dehumidifier displays E5 and stops operating.
Water Level / Bucket Full Switch Fault
E6
AIRCARE dehumidifier shows E6 and will not start or shuts down.
Fan Motor or Fan Feedback Error
E7
AIRCARE dehumidifier displays E7 and stops running.
Control Panel / Keypad Communication Error
E8
AIRCARE dehumidifier shows E8 and will not operate.
Internal Memory / EEPROM Error on Control Board
EC
AIRCARE dehumidifier displays EC and stops dehumidifying.
Refrigerant System / Low Refrigerant or Sensor Error (Generic Error Code)
F
AIRCARE digital humidifier displays an 'F' or 'FL' style code and will not run even though the tank appears to be installed.
Water Level / Float Switch Not Satisfied
HI
AIRCARE digital humidifier or dehumidifier displays HI for humidity and will not run in automatic mode.
Humidity Above Sensor Range / RH Sensor Saturated
LO
AIRCARE digital humidifier displays LO and does not increase humidity output even when set higher.
Low Room Temperature or Sensor Reading Below Operating Range
PF
AIRCARE digital humidifier or dehumidifier shows PF or flashes all segments after a power outage and does not resume previous settings.
Power Failure / Brownout Recovery State
Symptom
Dehumidifier bucket fills too quickly and needs to be emptied multiple times per day.
High Moisture Load or Continuous Operation
Symptom
Dehumidifier bucket full light stays on even when the bucket is empty and correctly installed.
Stuck or Faulty Bucket Full Switch
Symptom
Dehumidifier emits a strong chemical or burning smell when running.
Electrical Overheating or Component Failure
Symptom
Dehumidifier fan runs but compressor cycles on and off rapidly every few minutes.
Short Cycling of Compressor
Symptom
Dehumidifier leaks water from the rear or bottom instead of into the bucket.
Drainage Path Blockage or Misrouting
Symptom
Dehumidifier runs but does not collect water; bucket remains dry.
No Dehumidification / Refrigeration System Failure
Symptom
Dehumidifier shuts off and will not restart until it cools down.
Thermal Overload / Overheating Protection
Symptom
Humidifier base overfills and water spills when the tank is installed.
Tank Valve Not Closing or Misaligned
Symptom
Humidifier display and buttons work but fan and pump (if equipped) do not run.
Output Drive Failure on Control Board or Open Motor Circuit
Symptom
Humidifier emits a metallic or rusty smell and water appears discolored.
Corrosion or Contamination in Water Path
Symptom
Humidifier leaks water onto the floor from the base or around the tank.
Water Tank Seal or Valve Leakage
Symptom
Humidifier makes loud rattling or buzzing noises during operation.
Mechanical Vibration or Loose Components
Symptom
Humidifier or dehumidifier buttons are unresponsive or respond intermittently.
Keypad / Control Panel Failure
Symptom
Humidifier produces a musty or moldy smell during operation.
Microbial Growth in Reservoir and Wick Filter
Symptom
Humidifier produces visible white dust on nearby furniture.
Mineral Dust Emission from Water
Symptom
Humidifier runs but no mist or very little humidity output even with a new wick installed.
Restricted Airflow Through Wick / Fan Underperformance
Symptom
Humidifier runs continuously but room humidity never reaches the set point.
Insufficient Capacity or Reduced Evaporation Efficiency
Symptom
Humidifier tank empties unusually fast and room feels overly damp or condensation forms on windows.
Over-Humidification / Control Not Cycling Off
Symptom
Humidifier tank is full but the unit indicates low water and will not run.
Water Level Detection Failure
Symptom
Humidifier turns on but shuts off after a few seconds or minutes without reaching the set humidity.
Premature Shutoff Due to Faulty Humidity Sensing or Overheat Protection
Symptom
Humidifier vibrates excessively and may move slightly on the floor or table.
Imbalanced Fan or Poor Mounting Surface
Symptom
Humidifier will not power on at all; no lights or display even when plugged into a known-good outlet.
No Power / Open Power Circuit
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| CF |
AIRCARE evaporative console humidifier displays CF and stops running even though there is water in the tank.
|
Filter Change Reminder / Wick Filter Service Required | View Details |
| E1 |
AIRCARE digital humidifier or dehumidifier displays E1 and will not operate or shuts down shortly after starting.
|
Room Temperature Sensor (Thermistor) Fault | View Details |
| E2 |
AIRCARE dehumidifier shows E2 and stops dehumidifying or will not start.
|
Humidity Sensor (RH Sensor) Fault | View Details |
| E3 |
AIRCARE dehumidifier displays E3 and the compressor will not run or shuts off quickly.
|
Evaporator Coil Temperature Sensor Fault / Defrost Sensor Error | View Details |
| E4 |
AIRCARE dehumidifier shows E4 and will not run or shuts down shortly after starting.
|
Refrigeration System / High-Pressure or Overload Protection Error (Control Interpretation) | View Details |
| E5 |
AIRCARE dehumidifier displays E5 and stops operating.
|
Water Level / Bucket Full Switch Fault | View Details |
| E6 |
AIRCARE dehumidifier shows E6 and will not start or shuts down.
|
Fan Motor or Fan Feedback Error | View Details |
| E7 |
AIRCARE dehumidifier displays E7 and stops running.
|
Control Panel / Keypad Communication Error | View Details |
| E8 |
AIRCARE dehumidifier shows E8 and will not operate.
|
Internal Memory / EEPROM Error on Control Board | View Details |
| EC |
AIRCARE dehumidifier displays EC and stops dehumidifying.
|
Refrigerant System / Low Refrigerant or Sensor Error (Generic Error Code) | View Details |
| F |
AIRCARE digital humidifier displays an 'F' or 'FL' style code and will not run even though the tank appears to be installed.
|
Water Level / Float Switch Not Satisfied | View Details |
| HI |
AIRCARE digital humidifier or dehumidifier displays HI for humidity and will not run in automatic mode.
|
Humidity Above Sensor Range / RH Sensor Saturated | View Details |
| LO |
AIRCARE digital humidifier displays LO and does not increase humidity output even when set higher.
|
Low Room Temperature or Sensor Reading Below Operating Range | View Details |
| PF |
AIRCARE digital humidifier or dehumidifier shows PF or flashes all segments after a power outage and does not resume previous settings.
|
Power Failure / Brownout Recovery State | View Details |
| – |
Dehumidifier bucket fills too quickly and needs to be emptied multiple times per day.
|
High Moisture Load or Continuous Operation | View Details |
| – |
Dehumidifier bucket full light stays on even when the bucket is empty and correctly installed.
|
Stuck or Faulty Bucket Full Switch | View Details |
| – |
Dehumidifier emits a strong chemical or burning smell when running.
|
Electrical Overheating or Component Failure | View Details |
| – |
Dehumidifier fan runs but compressor cycles on and off rapidly every few minutes.
|
Short Cycling of Compressor | View Details |
| – |
Dehumidifier leaks water from the rear or bottom instead of into the bucket.
|
Drainage Path Blockage or Misrouting | View Details |
| – |
Dehumidifier runs but does not collect water; bucket remains dry.
|
No Dehumidification / Refrigeration System Failure | View Details |
| – |
Dehumidifier shuts off and will not restart until it cools down.
|
Thermal Overload / Overheating Protection | View Details |
| – |
Humidifier base overfills and water spills when the tank is installed.
|
Tank Valve Not Closing or Misaligned | View Details |
| – |
Humidifier display and buttons work but fan and pump (if equipped) do not run.
|
Output Drive Failure on Control Board or Open Motor Circuit | View Details |
| – |
Humidifier emits a metallic or rusty smell and water appears discolored.
|
Corrosion or Contamination in Water Path | View Details |
| – |
Humidifier leaks water onto the floor from the base or around the tank.
|
Water Tank Seal or Valve Leakage | View Details |
| – |
Humidifier makes loud rattling or buzzing noises during operation.
|
Mechanical Vibration or Loose Components | View Details |
| – |
Humidifier or dehumidifier buttons are unresponsive or respond intermittently.
|
Keypad / Control Panel Failure | View Details |
| – |
Humidifier produces a musty or moldy smell during operation.
|
Microbial Growth in Reservoir and Wick Filter | View Details |
| – |
Humidifier produces visible white dust on nearby furniture.
|
Mineral Dust Emission from Water | View Details |
| – |
Humidifier runs but no mist or very little humidity output even with a new wick installed.
|
Restricted Airflow Through Wick / Fan Underperformance | View Details |
| – |
Humidifier runs continuously but room humidity never reaches the set point.
|
Insufficient Capacity or Reduced Evaporation Efficiency | View Details |
| – |
Humidifier tank empties unusually fast and room feels overly damp or condensation forms on windows.
|
Over-Humidification / Control Not Cycling Off | View Details |
| – |
Humidifier tank is full but the unit indicates low water and will not run.
|
Water Level Detection Failure | View Details |
| – |
Humidifier turns on but shuts off after a few seconds or minutes without reaching the set humidity.
|
Premature Shutoff Due to Faulty Humidity Sensing or Overheat Protection | View Details |
| – |
Humidifier vibrates excessively and may move slightly on the floor or table.
|
Imbalanced Fan or Poor Mounting Surface | View Details |
| – |
Humidifier will not power on at all; no lights or display even when plugged into a known-good outlet.
|
No Power / Open Power Circuit | View Details |
No matching codes found
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