Argo
Argo 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
Unit will not start and displays E1 on the control panel.
Room Temperature Sensor Failure
E2
Display shows E2 and the dehumidifier stops running shortly after power-on.
Evaporator Coil Temperature Sensor Failure
E3
Humidifier/dehumidifier shows E3 and will not regulate humidity correctly.
Humidity Sensor (RH Sensor) Failure
E4
Display shows E4 and compressor does not start.
Refrigerant System Protection / High or Low Pressure Fault (Sensor or Circuit)
E5
Unit displays E5 and stops dehumidifying; fan may still run.
Compressor Overload / Overheat Protection
E6
Display shows E6 and the unit will not start or stops unexpectedly.
Communication Error Between Display Board and Main PCB
E7
E7 appears on the display and the water tank is empty or correctly installed.
Water Tank Level / Float Switch Error
E8
E8 is displayed and the fan does not run or runs erratically.
Fan Motor or Fan Feedback Error
E9
E9 appears and the unit shuts down or will not start; sometimes accompanied by a burning smell previously.
EEPROM / Control Memory Error
EC
Display shows EC and the unit stops cooling/dehumidifying.
Refrigerant Leak / Low Refrigerant or Coil Temperature Fault
F0
Display shows F0 and the unit does not respond to humidity settings.
Sensor Calibration / General Sensor Fault
F1
F1 appears and the fan runs but compressor does not engage.
Low Ambient Temperature Protection / Anti-Frost Mode
F2
F2 is displayed and the unit cycles on and off frequently without reaching set humidity.
Defrost Sensor / Evaporator Sensor Error
H1
H1 appears on an Argo humidifier and it stops producing mist.
Water Level Low / Tank Empty Protection
H2
H2 is displayed and the humidifier shuts down; base feels warm.
Overheat Protection / Dry-Run Protection
H3
H3 appears and the humidifier produces no mist even with water present.
Ultrasonic Transducer / Nebulizer Fault
H4
H4 is displayed and the humidifier fan runs but no mist is visible.
Water Flow / Pump Fault (for plumbed or advanced Argo humidifiers)
P1
P1 is displayed and the dehumidifier does not run; sometimes accompanied by a full tank icon.
Internal Reservoir Full / Pump Sump Full (for models with pump or internal tray)
P2
P2 appears and the unit stops; water tank is full.
Standard Water Tank Full Condition
Symptom
Dehumidifier does not power on at all; no lights or display.
No Power / Main Power Circuit Failure
Symptom
Dehumidifier fan runs continuously even when target humidity is reached.
Fan Control Logic or Humidity Sensing Error
Symptom
Dehumidifier runs but does not collect water; room remains humid.
Loss of Refrigerant Charge / Weak Compressor
Symptom
Dehumidifier runs but makes loud rattling or grinding noises.
Mechanical Noise from Fan or Compressor Mounts
Symptom
Dehumidifier shuts off after a few minutes and the evaporator is covered in ice.
Evaporator Coil Icing / Defrost Failure
Symptom
Dehumidifier stops and will not restart for several minutes after turning off.
Compressor Short-Cycle Protection (Normal Behavior)
Symptom
Excessive vibration or unit "walks" across the floor during operation.
Imbalance or Mounting Vibration Issue
Symptom
Humidifier base is wet or water seeps around the unit.
Humidifier Tank or Base Leak
Symptom
Humidifier emits a burning or plastic smell when operating.
Overheating Component or Electrical Insulation Odor
Symptom
Humidifier is unusually loud, with whistling or high-pitched noise.
Airflow Restriction or Fan Noise
Symptom
Humidifier leaves white dust on nearby furniture.
Mineral Dust Emission
Symptom
Humidifier or dehumidifier display works but buttons do not respond.
Keypad / Touch Panel Failure
Symptom
Humidifier runs but produces very little or no visible mist.
Reduced Humidification Output
Symptom
Musty or moldy smell from the dehumidifier exhaust air.
Biological Growth in Water Tank or on Coils
Symptom
Unit frequently trips the household circuit breaker when starting.
High Inrush Current / Electrical Short
Symptom
Unit powers on but compressor and fan never start; only display works.
Relay or Triac Failure on Main PCB
Symptom
Water leaking from the bottom of the dehumidifier onto the floor.
Condensate Drainage Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Unit will not start and displays E1 on the control panel.
|
Room Temperature Sensor Failure | View Details |
| E2 |
Display shows E2 and the dehumidifier stops running shortly after power-on.
|
Evaporator Coil Temperature Sensor Failure | View Details |
| E3 |
Humidifier/dehumidifier shows E3 and will not regulate humidity correctly.
|
Humidity Sensor (RH Sensor) Failure | View Details |
| E4 |
Display shows E4 and compressor does not start.
|
Refrigerant System Protection / High or Low Pressure Fault (Sensor or Circuit) | View Details |
| E5 |
Unit displays E5 and stops dehumidifying; fan may still run.
|
Compressor Overload / Overheat Protection | View Details |
| E6 |
Display shows E6 and the unit will not start or stops unexpectedly.
|
Communication Error Between Display Board and Main PCB | View Details |
| E7 |
E7 appears on the display and the water tank is empty or correctly installed.
|
Water Tank Level / Float Switch Error | View Details |
| E8 |
E8 is displayed and the fan does not run or runs erratically.
|
Fan Motor or Fan Feedback Error | View Details |
| E9 |
E9 appears and the unit shuts down or will not start; sometimes accompanied by a burning smell previously.
|
EEPROM / Control Memory Error | View Details |
| EC |
Display shows EC and the unit stops cooling/dehumidifying.
|
Refrigerant Leak / Low Refrigerant or Coil Temperature Fault | View Details |
| F0 |
Display shows F0 and the unit does not respond to humidity settings.
|
Sensor Calibration / General Sensor Fault | View Details |
| F1 |
F1 appears and the fan runs but compressor does not engage.
|
Low Ambient Temperature Protection / Anti-Frost Mode | View Details |
| F2 |
F2 is displayed and the unit cycles on and off frequently without reaching set humidity.
|
Defrost Sensor / Evaporator Sensor Error | View Details |
| H1 |
H1 appears on an Argo humidifier and it stops producing mist.
|
Water Level Low / Tank Empty Protection | View Details |
| H2 |
H2 is displayed and the humidifier shuts down; base feels warm.
|
Overheat Protection / Dry-Run Protection | View Details |
| H3 |
H3 appears and the humidifier produces no mist even with water present.
|
Ultrasonic Transducer / Nebulizer Fault | View Details |
| H4 |
H4 is displayed and the humidifier fan runs but no mist is visible.
|
Water Flow / Pump Fault (for plumbed or advanced Argo humidifiers) | View Details |
| P1 |
P1 is displayed and the dehumidifier does not run; sometimes accompanied by a full tank icon.
|
Internal Reservoir Full / Pump Sump Full (for models with pump or internal tray) | View Details |
| P2 |
P2 appears and the unit stops; water tank is full.
|
Standard Water Tank Full Condition | View Details |
| – |
Dehumidifier does not power on at all; no lights or display.
|
No Power / Main Power Circuit Failure | View Details |
| – |
Dehumidifier fan runs continuously even when target humidity is reached.
|
Fan Control Logic or Humidity Sensing Error | View Details |
| – |
Dehumidifier runs but does not collect water; room remains humid.
|
Loss of Refrigerant Charge / Weak Compressor | View Details |
| – |
Dehumidifier runs but makes loud rattling or grinding noises.
|
Mechanical Noise from Fan or Compressor Mounts | View Details |
| – |
Dehumidifier shuts off after a few minutes and the evaporator is covered in ice.
|
Evaporator Coil Icing / Defrost Failure | View Details |
| – |
Dehumidifier stops and will not restart for several minutes after turning off.
|
Compressor Short-Cycle Protection (Normal Behavior) | View Details |
| – |
Excessive vibration or unit "walks" across the floor during operation.
|
Imbalance or Mounting Vibration Issue | View Details |
| – |
Humidifier base is wet or water seeps around the unit.
|
Humidifier Tank or Base Leak | View Details |
| – |
Humidifier emits a burning or plastic smell when operating.
|
Overheating Component or Electrical Insulation Odor | View Details |
| – |
Humidifier is unusually loud, with whistling or high-pitched noise.
|
Airflow Restriction or Fan Noise | View Details |
| – |
Humidifier leaves white dust on nearby furniture.
|
Mineral Dust Emission | View Details |
| – |
Humidifier or dehumidifier display works but buttons do not respond.
|
Keypad / Touch Panel Failure | View Details |
| – |
Humidifier runs but produces very little or no visible mist.
|
Reduced Humidification Output | View Details |
| – |
Musty or moldy smell from the dehumidifier exhaust air.
|
Biological Growth in Water Tank or on Coils | View Details |
| – |
Unit frequently trips the household circuit breaker when starting.
|
High Inrush Current / Electrical Short | View Details |
| – |
Unit powers on but compressor and fan never start; only display works.
|
Relay or Triac Failure on Main PCB | View Details |
| – |
Water leaking from the bottom of the dehumidifier onto the floor.
|
Condensate Drainage Leak | View Details |
No matching codes found
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