Dimplex Humidifiers & Dehumidifiers Error Codes

E1

Dehumidifier will not run; display shows E1 shortly after power-up

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 will not start compressor

Humidity Sensor (RH Sensor) Failure

E4

Dehumidifier displays E4 and shuts down; may occur after long runtime

Refrigeration System High/Low Temperature Protection or Defrost Fault

E5

Dehumidifier shows E5 and compressor does not start or stops quickly

Compressor Overload / Current Protection Fault

E6

Dehumidifier displays E6; controls may be unresponsive or erratic

Control Panel Communication Error

E7

Dehumidifier shows E7 and stops; may occur in very cold or hot rooms

Ambient Temperature Out of Range / Sensor Calibration Error

E8

Dehumidifier displays E8 and shuts down; fan may still operate

Fan Motor or Fan Feedback Error

E9

Dehumidifier shows E9 and will not start; may occur after a power surge

EEPROM / Memory Error on Main PCB

F0

Dehumidifier displays F0 and will not start dehumidifying

Refrigerant System / Low Refrigerant or Sensor Fault (model-dependent)

F1

Humidifier displays F1 and stops producing mist

Water Level Sensor Fault (Humidifier)

F2

Humidifier shows F2; no mist output even with full tank

Ultrasonic Transducer / Nebulizer Fault

F3

Humidifier displays F3 and shuts down; may coincide with overheating of base

Overheat Protection / Thermal Cut-Out Activated

F4

Humidifier shows F4; controls may be locked or unresponsive

Humidity Sensor Fault (Humidifier)

HI

Dehumidifier or humidifier display shows HI for temperature or humidity and may not control properly

High Ambient / High Humidity Indication or Sensor Overrange

LO

Dehumidifier display shows LO and unit does not dehumidify

Low Ambient Temperature Lockout

P1

Dehumidifier displays P1 and stops dehumidifying

Defrost Mode Active / Low Coil Temperature Protection

P2

Dehumidifier displays P2 and stops; water bucket is full or nearly full

Water Tank Full / Tank Not Seated

P3

Dehumidifier shows P3 and stops; often associated with pump-equipped models

Condensate Pump Fault / Pump Reservoir Full

Symptom

Dehumidifier coils freeze into a solid block of ice

Evaporator Coil Icing

Symptom

Dehumidifier controls are unresponsive; some buttons do not work

Keypad / Control Panel Failure

Symptom

Dehumidifier emits a burning smell or visible smoke

Electrical Overheating / Component Failure

Symptom

Dehumidifier fan does not run; compressor may start and then shut down

Fan Motor Failure

Symptom

Dehumidifier leaks water onto the floor

Condensate Drainage Fault

Symptom

Dehumidifier makes loud rattling or grinding noise during operation

Mechanical Vibration or Fan/Compressor Noise

Symptom

Dehumidifier powers on but compressor never starts; fan runs continuously

Compressor Start Circuit Failure

Symptom

Dehumidifier runs briefly then shuts off; bucket is not full

False Bucket Full Detection

Symptom

Dehumidifier runs but does not collect water; room remains damp

Loss of Refrigerant Capacity / Poor Heat Exchange

Symptom

Dehumidifier vibrates excessively and moves on the floor

Excessive Vibration / Imbalance

Symptom

Dehumidifier will not power on at all; no lights or display

No Power / Main Supply or PCB Failure

Symptom

Humidifier display and buttons work but fan does not run (evaporative models)

Humidifier Fan Motor Failure

Symptom

Humidifier has a strong musty or moldy smell

Microbial Growth in Water Path

Symptom

Humidifier leaks water from base or around tank

Water Containment / Seal Failure

Symptom

Humidifier runs but produces very little or no mist

Reduced Humidification Output

Symptom

Humidifier runs continuously and over-humidifies the room

Humidity Control / Sensor or Control Fault

Symptom

Humidifier shuts off even though tank is not empty

False Empty Tank Detection