Honeywell · Dehumidifier error code

E3Refrigeration protection / high room temperature

Cross-checked Power off, standard tools

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

Related diagnostic guides

Guide · Dehumidifier

Dehumidifier error codes: general approach (sensor, bucket, pump)

Most portable dehumidifiers share the same code groups: sensor faults (E1/E2/EH), bucket (P1/FL), pump (E5/P2) and refrigeration protection (E3/EC). Power-cycle and basic checks fix many; sensor faults need a part.

4 steps ~30 mineasy
Guide · Dehumidifier

Dehumidifier coils frosting or icing up

Light frost that comes and goes is normal: the defrost logic stops the compressor and runs the fan until it clears. Persistent ice means the room is too cold, airflow is restricted, the coil sensor has failed, or the refrigerant charge is low (sealed system, blocked).

6 steps ~40 minmoderate

More Honeywell dehumidifier codes

Honeywell · Dehumidifier

E1 / E2

Temperature sensor fault

Cross-checked

Honeywell · Dehumidifier

E5

Pump or drainage fault

Single source

Honeywell · Dehumidifier

EH

Humidity sensor fault

Cross-checked

Honeywell · Dehumidifier

P1

Water tank pulled out / not seated

Cross-checked

Honeywell · Dehumidifier

SA

Rest period (not a fault)

Single source
Honeywell dehumidifier error E3: Refrigeration protection / high room temperature · OnCall Tech