Inventor Humidifiers & Dehumidifiers Error Codes

E1

Dehumidifier will not start and displays E1 on the control panel

Room Temperature Sensor Failure

E2

Dehumidifier stops operation and shows E2 on the display

Evaporator Coil Temperature Sensor Failure

E3

Dehumidifier runs briefly then stops with E3 error on the screen

Humidity Sensor (RH Sensor) Failure

E4

Dehumidifier stops and displays E4, often after running for a short time

Refrigeration System Protection / Defrost Sensor Fault

E5

Dehumidifier does not start compressor and shows E5 on the display

Compressor Overload / High Temperature Protection

E6

Dehumidifier shows E6 and will not run the compressor

Communication Error Between Display Board and Main PCB

E7

Dehumidifier displays E7 and stops operation

Water Level Sensor / Float Switch Error

E8

Dehumidifier shows E8 and shuts down, often related to fan issues

Fan Motor or Fan Feedback Error

E9

Dehumidifier displays E9 and will not operate normally

EEPROM / Memory Error on Main PCB

EC

Dehumidifier shows EC and stops cooling/dehumidifying

Refrigerant System Leak or Low Charge Protection

F0

Dehumidifier displays F0 and does not start normal operation

General Sensor Fault / Sensor Circuit Abnormal

F1

Dehumidifier shows F1 and may still run in a limited mode

Humidity Sensor Calibration / Range Error

H1

Dehumidifier shows H1 and stops dehumidifying

High Temperature Protection (Ambient or Coil)

HI

Dehumidifier displays HI humidity and may not control properly

Humidity Above Measurement Range or Sensor Saturation

LO

Dehumidifier displays LO and does not start dehumidifying

Low Ambient Temperature Lockout

P1

Dehumidifier shows P1 and stops dehumidifying

Defrost Mode Active / Low Coil Temperature Protection

P2

Dehumidifier shows P2 and stops collecting water

Water Tank Full or Continuous Drain Protection

Symptom

Dehumidifier air outlet smells like burning plastic or hot electronics

Overheating or Electrical Insulation Failure

Symptom

Dehumidifier display and buttons do not respond, but power light is on

Keypad / Control Panel Failure

Symptom

Dehumidifier does not power on at all (no lights, no display)

No Power / Power Supply Failure

Symptom

Dehumidifier emits a musty or moldy smell from the air outlet

Microbial Growth on Coils or in Water System

Symptom

Dehumidifier fan does not run, but the compressor may hum or start

Fan Motor Not Operating

Symptom

Dehumidifier for Inventor humidifier-type unit does not produce mist or visible humidity

No Humidification (for Inventor Humidifier Models)

Symptom

Dehumidifier leaks water onto the floor instead of into the tank or drain hose

Water Leakage / Drainage Fault

Symptom

Dehumidifier makes loud rattling or grinding noises during operation

Mechanical Noise / Vibration Fault

Symptom

Dehumidifier powers on but compressor never starts; only fan runs

Compressor Start Failure

Symptom

Dehumidifier runs but does not collect water; humidity does not decrease

No Dehumidification / Poor Cooling Performance

Symptom

Dehumidifier runs for a few minutes then shuts off and restarts frequently

Short Cycling

Symptom

Dehumidifier shows incorrect humidity readings (e.g., always 30% or 80%)

Humidity Measurement Inaccuracy

Symptom

Dehumidifier tank fills too quickly or not at all compared to expected operation

Abnormal Water Collection Rate

Symptom

Dehumidifier vibrates excessively and may move on the floor

Excessive Vibration

Symptom

Inventor humidifier leaves white dust on furniture

Mineral Dust Emission

Symptom

Inventor humidifier makes high-pitched whining or buzzing noise

Ultrasonic or Fan Noise

Symptom

Inventor humidifier produces very weak mist output even at maximum setting

Reduced Humidification Capacity

Symptom

Inventor humidifier shows water in tank but indicates empty and will not run

Water Level Detection Failure (Humidifier)

Symptom

Inventor humidifier water leaks from base onto table or floor

Humidifier Water Leakage