Whynter 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 displays E1 and will not operate normally
Ambient Temperature Sensor (Room Thermistor) Error
E2
Dehumidifier shows E2 and the compressor/fan may not run
Evaporator Coil Temperature Sensor Error
E3
Dehumidifier displays E3 and shuts down or fails to start
Humidity Sensor (RH Sensor) Error
E4
Dehumidifier shows E4 and does not cool or dehumidify
Refrigeration System Protection / High or Low Pressure Fault (Model-dependent)
E5
Dehumidifier displays E5 and will not run the compressor
Compressor Overload / Overcurrent Protection
E6
Dehumidifier shows E6; controls may be unresponsive or erratic
Communication Error Between Display Board and Main Control Board
E7
Dehumidifier displays E7 and stops operating.
Water Pump Failure (for models with built-in condensate pump)
E8
Dehumidifier shows E8 and shuts down unexpectedly.
Fan Motor or Fan Feedback Error
EC
Dehumidifier shows EC and does not cool or dehumidify.
Refrigerant System Error / Low Refrigerant or Sensor Fault
F1
Dehumidifier displays F1 and stops dehumidifying
Frost Protection / Low Coil Temperature Fault
F2
Dehumidifier shows F2 and will not run properly
High Temperature Fault / Overheat Protection
H1
Dehumidifier displays H1; the humidity reading seems stuck at 20% or 30%
Humidity Sensor Calibration or Range Error
H2
Dehumidifier shows H2 and will not respond to humidity setpoint changes
Humidity Sensor Disconnected or Shorted
HI
Dehumidifier displays HI and may run continuously.
High Humidity Indication or Sensor Out-of-Range High
LO
Dehumidifier displays LO and does not begin dehumidifying
Low Temperature Lockout
P1
Dehumidifier displays P1 and will not start dehumidifying
Internal Water Collection Bucket Full or Not Seated
P2
Dehumidifier shows P2 and stops running, often after some time of operation
Internal Condensate Reservoir Full (Continuous Drain Not Installed or Blocked)
P3
Dehumidifier displays P3 and compressor will not engage
Ambient Temperature Out of Operating Range (Low Temperature Protection)
P4
Dehumidifier shows P4 and shuts down or will not start
Defrost Sensor / Evaporator Temperature Sensor Fault
Symptom
Dehumidifier bucket fills very quickly, and the unit shuts off frequently.
High Moisture Load or Improper Drain Setup
Symptom
Dehumidifier coils freeze into a solid block of ice during operation.
Evaporator Coil Icing
Symptom
Dehumidifier cycles on and off rapidly when set to a specific humidity.
Humidity Hysteresis / Sensor Placement Issue
Symptom
Dehumidifier display and buttons are unresponsive, but the power light may be on.
Keypad / Control Panel Failure
Symptom
Dehumidifier display is very dim or segments are missing, but the unit still runs.
Display Module Degradation
Symptom
Dehumidifier display shows incorrect room temperature.
Ambient Temperature Sensing Error
Symptom
Dehumidifier emits a burning or electrical smell during operation.
Overheating Electrical Component
Symptom
Dehumidifier emits a musty or moldy odor from the air outlet.
Biological Growth in Drain Pan and Coils
Symptom
Dehumidifier fan does not run, but the compressor attempts to start or runs briefly.
Fan Motor Failure
Symptom
Dehumidifier fan runs, but airflow is weak from the outlet.
Restricted Airflow / Blower Wheel Obstruction
Symptom
Dehumidifier frequently trips the household circuit breaker or blows fuses.
Excessive Current Draw / Electrical Short
Symptom
Dehumidifier hums loudly, but neither the fan nor the compressor starts.
Stalled Motor or Seized Compressor
Symptom
Dehumidifier indicates 'bucket full' even when the bucket is empty and properly installed.
False 'Bucket Full' Detection
Symptom
Dehumidifier makes loud rattling or vibrating noises during operation.
Mechanical Vibration / Loose Components
Symptom
Dehumidifier powers on, but the compressor never starts; only the fan runs.
Compressor Start Failure
Symptom
Dehumidifier runs but does not collect water; humidity in the room remains high.
Insufficient Dehumidification / Loss of Cooling Capacity
Symptom
Dehumidifier runs continuously and never reaches the set humidity.
Humidity Control Failure / Undersized Capacity
Symptom
Dehumidifier shuts off after a few minutes of operation and restarts repeatedly.
Short Cycling / Overheat or Frost Protection Cycling
Symptom
Dehumidifier will not power on at all; the display is blank.
No Power / Dead Control Board
Symptom
Water leaks from the bottom or sides of the dehumidifier onto the floor.
External Water Leak / Drainage Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Dehumidifier displays E1 and will not operate normally
|
Ambient Temperature Sensor (Room Thermistor) Error | View Details |
| E2 |
Dehumidifier shows E2 and the compressor/fan may not run
|
Evaporator Coil Temperature Sensor Error | View Details |
| E3 |
Dehumidifier displays E3 and shuts down or fails to start
|
Humidity Sensor (RH Sensor) Error | View Details |
| E4 |
Dehumidifier shows E4 and does not cool or dehumidify
|
Refrigeration System Protection / High or Low Pressure Fault (Model-dependent) | View Details |
| E5 |
Dehumidifier displays E5 and will not run the compressor
|
Compressor Overload / Overcurrent Protection | View Details |
| E6 |
Dehumidifier shows E6; controls may be unresponsive or erratic
|
Communication Error Between Display Board and Main Control Board | View Details |
| E7 |
Dehumidifier displays E7 and stops operating.
|
Water Pump Failure (for models with built-in condensate pump) | View Details |
| E8 |
Dehumidifier shows E8 and shuts down unexpectedly.
|
Fan Motor or Fan Feedback Error | View Details |
| EC |
Dehumidifier shows EC and does not cool or dehumidify.
|
Refrigerant System Error / Low Refrigerant or Sensor Fault | View Details |
| F1 |
Dehumidifier displays F1 and stops dehumidifying
|
Frost Protection / Low Coil Temperature Fault | View Details |
| F2 |
Dehumidifier shows F2 and will not run properly
|
High Temperature Fault / Overheat Protection | View Details |
| H1 |
Dehumidifier displays H1; the humidity reading seems stuck at 20% or 30%
|
Humidity Sensor Calibration or Range Error | View Details |
| H2 |
Dehumidifier shows H2 and will not respond to humidity setpoint changes
|
Humidity Sensor Disconnected or Shorted | View Details |
| HI |
Dehumidifier displays HI and may run continuously.
|
High Humidity Indication or Sensor Out-of-Range High | View Details |
| LO |
Dehumidifier displays LO and does not begin dehumidifying
|
Low Temperature Lockout | View Details |
| P1 |
Dehumidifier displays P1 and will not start dehumidifying
|
Internal Water Collection Bucket Full or Not Seated | View Details |
| P2 |
Dehumidifier shows P2 and stops running, often after some time of operation
|
Internal Condensate Reservoir Full (Continuous Drain Not Installed or Blocked) | View Details |
| P3 |
Dehumidifier displays P3 and compressor will not engage
|
Ambient Temperature Out of Operating Range (Low Temperature Protection) | View Details |
| P4 |
Dehumidifier shows P4 and shuts down or will not start
|
Defrost Sensor / Evaporator Temperature Sensor Fault | View Details |
| – |
Dehumidifier bucket fills very quickly, and the unit shuts off frequently.
|
High Moisture Load or Improper Drain Setup | View Details |
| – |
Dehumidifier coils freeze into a solid block of ice during operation.
|
Evaporator Coil Icing | View Details |
| – |
Dehumidifier cycles on and off rapidly when set to a specific humidity.
|
Humidity Hysteresis / Sensor Placement Issue | View Details |
| – |
Dehumidifier display and buttons are unresponsive, but the power light may be on.
|
Keypad / Control Panel Failure | View Details |
| – |
Dehumidifier display is very dim or segments are missing, but the unit still runs.
|
Display Module Degradation | View Details |
| – |
Dehumidifier display shows incorrect room temperature.
|
Ambient Temperature Sensing Error | View Details |
| – |
Dehumidifier emits a burning or electrical smell during operation.
|
Overheating Electrical Component | View Details |
| – |
Dehumidifier emits a musty or moldy odor from the air outlet.
|
Biological Growth in Drain Pan and Coils | View Details |
| – |
Dehumidifier fan does not run, but the compressor attempts to start or runs briefly.
|
Fan Motor Failure | View Details |
| – |
Dehumidifier fan runs, but airflow is weak from the outlet.
|
Restricted Airflow / Blower Wheel Obstruction | View Details |
| – |
Dehumidifier frequently trips the household circuit breaker or blows fuses.
|
Excessive Current Draw / Electrical Short | View Details |
| – |
Dehumidifier hums loudly, but neither the fan nor the compressor starts.
|
Stalled Motor or Seized Compressor | View Details |
| – |
Dehumidifier indicates 'bucket full' even when the bucket is empty and properly installed.
|
False 'Bucket Full' Detection | View Details |
| – |
Dehumidifier makes loud rattling or vibrating noises during operation.
|
Mechanical Vibration / Loose Components | View Details |
| – |
Dehumidifier powers on, but the compressor never starts; only the fan runs.
|
Compressor Start Failure | View Details |
| – |
Dehumidifier runs but does not collect water; humidity in the room remains high.
|
Insufficient Dehumidification / Loss of Cooling Capacity | View Details |
| – |
Dehumidifier runs continuously and never reaches the set humidity.
|
Humidity Control Failure / Undersized Capacity | View Details |
| – |
Dehumidifier shuts off after a few minutes of operation and restarts repeatedly.
|
Short Cycling / Overheat or Frost Protection Cycling | View Details |
| – |
Dehumidifier will not power on at all; the display is blank.
|
No Power / Dead Control Board | View Details |
| – |
Water leaks from the bottom or sides of the dehumidifier onto the floor.
|
External Water Leak / Drainage Failure | View Details |
No matching codes found
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