Klarstein
Klarstein 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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E1
Dehumidifier will not start; display shows E1 shortly after power-on.
Room Temperature Sensor Failure
E2
Dehumidifier stops and displays E2; fan may still run briefly.
Evaporator Coil Temperature Sensor Failure
E3
Dehumidifier shows E3 and stops dehumidifying; compressor does not start.
Humidity Sensor (RH Sensor) Failure
E4
Dehumidifier or humidifier beeps and displays E4; unit stops operation.
Water Level Sensor / Float Switch Error
E5
Dehumidifier shows E5 and compressor does not run; fan may operate.
Compressor Overload / High-Pressure Protection
E6
Dehumidifier or humidifier displays E6 and stops; buttons may still respond.
Communication Error Between Display Board and Main PCB
E7
Dehumidifier shows E7; unit may not respond to humidity settings.
EEPROM / Memory Error on Main PCB
E8
Dehumidifier displays E8 and shuts down; may occur after long operation.
Defrost Sensor / Anti-Frost Protection Error
E9
Dehumidifier shows E9 and will not start compressor; fan may run.
Compressor Current / Overload Detection Error
EC
Dehumidifier shows EC and stops; compressor does not run.
Refrigerant System / Sensor Error (Generic)
F1
Humidifier displays F1 and stops mist production.
Water Level Sensor Error (Humidifier Tank)
F2
Humidifier shows F2; no mist output even with full tank.
Ultrasonic Transducer / Nebulizer Fault
F3
Humidifier displays F3; unit powers but mist and fan do not run.
Overheat Protection / Thermal Fuse Triggered
F4
Humidifier shows F4; display works but humidity cannot be adjusted or reads 0%.
Humidity Sensor Failure (Humidifier)
HI
Dehumidifier or humidifier display shows HI for humidity and does not regulate properly.
Humidity Reading Out of Range (High)
LO
Dehumidifier display shows LO and unit does not start dehumidifying.
Low Temperature Lockout
P1
Dehumidifier shows P1 and does not start dehumidifying.
Internal Tank Full / Pump Reservoir Full (Pump Models)
P2
Dehumidifier shows P2; unit may run but not drain properly.
Continuous Drain Error / Pump Protection
Symptom
Dehumidifier compressor starts and stops frequently (short cycling) with little water collected.
Short Cycling / Incorrect Humidity Control
Symptom
Dehumidifier emits a loud grinding or scraping noise from the fan area.
Fan Obstruction or Bearing Failure
Symptom
Dehumidifier fan does not run; compressor may start and then shut down quickly.
Fan Motor Failure
Symptom
Dehumidifier ice builds up heavily on the evaporator coil and unit stops collecting water.
Excessive Frost / Defrost Failure
Symptom
Dehumidifier leaks water onto the floor instead of into the tank or drain hose.
Water Leakage / Drainage Fault
Symptom
Dehumidifier or humidifier buttons do not respond or respond intermittently.
Keypad / Touch Control Failure
Symptom
Dehumidifier or humidifier produces a musty or moldy smell during operation.
Microbial Growth in Water Path / Air Path
Symptom
Dehumidifier powers on but compressor never starts; only fan runs continuously.
Compressor Start Failure
Symptom
Dehumidifier runs but does not collect water; humidity in room remains high.
Loss of Refrigerant / Weak Cooling Circuit
Symptom
Dehumidifier stops frequently with the bucket full indicator on, but the bucket is empty.
False Bucket Full Detection
Symptom
Dehumidifier vibrates excessively or makes rattling noises during operation.
Excessive Vibration / Mechanical Noise
Symptom
Dehumidifier will not power on at all; no lights or display.
No Power / Dead Unit
Symptom
Humidifier base feels unusually hot; unit may emit a burning smell.
Overheating / Electrical Fault
Symptom
Humidifier display and buttons work, but fan does not run and no mist is produced.
Fan Control Failure (Humidifier)
Symptom
Humidifier leaves white dust on nearby surfaces.
Mineral Dust Emission
Symptom
Humidifier produces an unpleasant plastic or chemical smell when new.
Off-gassing of New Components
Symptom
Humidifier runs but produces very little or no visible mist.
Reduced Mist Output
Symptom
Humidifier shuts off unexpectedly even though the tank is full.
False Empty Tank Detection
Symptom
Humidifier water tank drips or seeps water from the bottom when removed.
Leaking Water Tank
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Dehumidifier will not start; display shows E1 shortly after power-on.
|
Room Temperature Sensor Failure | View Details |
| E2 |
Dehumidifier stops and displays E2; fan may still run briefly.
|
Evaporator Coil Temperature Sensor Failure | View Details |
| E3 |
Dehumidifier shows E3 and stops dehumidifying; compressor does not start.
|
Humidity Sensor (RH Sensor) Failure | View Details |
| E4 |
Dehumidifier or humidifier beeps and displays E4; unit stops operation.
|
Water Level Sensor / Float Switch Error | View Details |
| E5 |
Dehumidifier shows E5 and compressor does not run; fan may operate.
|
Compressor Overload / High-Pressure Protection | View Details |
| E6 |
Dehumidifier or humidifier displays E6 and stops; buttons may still respond.
|
Communication Error Between Display Board and Main PCB | View Details |
| E7 |
Dehumidifier shows E7; unit may not respond to humidity settings.
|
EEPROM / Memory Error on Main PCB | View Details |
| E8 |
Dehumidifier displays E8 and shuts down; may occur after long operation.
|
Defrost Sensor / Anti-Frost Protection Error | View Details |
| E9 |
Dehumidifier shows E9 and will not start compressor; fan may run.
|
Compressor Current / Overload Detection Error | View Details |
| EC |
Dehumidifier shows EC and stops; compressor does not run.
|
Refrigerant System / Sensor Error (Generic) | View Details |
| F1 |
Humidifier displays F1 and stops mist production.
|
Water Level Sensor Error (Humidifier Tank) | View Details |
| F2 |
Humidifier shows F2; no mist output even with full tank.
|
Ultrasonic Transducer / Nebulizer Fault | View Details |
| F3 |
Humidifier displays F3; unit powers but mist and fan do not run.
|
Overheat Protection / Thermal Fuse Triggered | View Details |
| F4 |
Humidifier shows F4; display works but humidity cannot be adjusted or reads 0%.
|
Humidity Sensor Failure (Humidifier) | View Details |
| HI |
Dehumidifier or humidifier display shows HI for humidity and does not regulate properly.
|
Humidity Reading Out of Range (High) | View Details |
| LO |
Dehumidifier display shows LO and unit does not start dehumidifying.
|
Low Temperature Lockout | View Details |
| P1 |
Dehumidifier shows P1 and does not start dehumidifying.
|
Internal Tank Full / Pump Reservoir Full (Pump Models) | View Details |
| P2 |
Dehumidifier shows P2; unit may run but not drain properly.
|
Continuous Drain Error / Pump Protection | View Details |
| – |
Dehumidifier compressor starts and stops frequently (short cycling) with little water collected.
|
Short Cycling / Incorrect Humidity Control | View Details |
| – |
Dehumidifier emits a loud grinding or scraping noise from the fan area.
|
Fan Obstruction or Bearing Failure | View Details |
| – |
Dehumidifier fan does not run; compressor may start and then shut down quickly.
|
Fan Motor Failure | View Details |
| – |
Dehumidifier ice builds up heavily on the evaporator coil and unit stops collecting water.
|
Excessive Frost / Defrost Failure | View Details |
| – |
Dehumidifier leaks water onto the floor instead of into the tank or drain hose.
|
Water Leakage / Drainage Fault | View Details |
| – |
Dehumidifier or humidifier buttons do not respond or respond intermittently.
|
Keypad / Touch Control Failure | View Details |
| – |
Dehumidifier or humidifier produces a musty or moldy smell during operation.
|
Microbial Growth in Water Path / Air Path | View Details |
| – |
Dehumidifier powers on but compressor never starts; only fan runs continuously.
|
Compressor Start Failure | View Details |
| – |
Dehumidifier runs but does not collect water; humidity in room remains high.
|
Loss of Refrigerant / Weak Cooling Circuit | View Details |
| – |
Dehumidifier stops frequently with the bucket full indicator on, but the bucket is empty.
|
False Bucket Full Detection | View Details |
| – |
Dehumidifier vibrates excessively or makes rattling noises during operation.
|
Excessive Vibration / Mechanical Noise | View Details |
| – |
Dehumidifier will not power on at all; no lights or display.
|
No Power / Dead Unit | View Details |
| – |
Humidifier base feels unusually hot; unit may emit a burning smell.
|
Overheating / Electrical Fault | View Details |
| – |
Humidifier display and buttons work, but fan does not run and no mist is produced.
|
Fan Control Failure (Humidifier) | View Details |
| – |
Humidifier leaves white dust on nearby surfaces.
|
Mineral Dust Emission | View Details |
| – |
Humidifier produces an unpleasant plastic or chemical smell when new.
|
Off-gassing of New Components | View Details |
| – |
Humidifier runs but produces very little or no visible mist.
|
Reduced Mist Output | View Details |
| – |
Humidifier shuts off unexpectedly even though the tank is full.
|
False Empty Tank Detection | View Details |
| – |
Humidifier water tank drips or seeps water from the bottom when removed.
|
Leaking Water Tank | View Details |
No matching codes found
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