Error code · Dehumidifier

Frigidaire Dehumidifier Code AS: Humidity or Temperature Sensor

Medium · inspection needed

Code: AS
Appliance: Dehumidifier
Brand: Frigidaire
Warranty: 30-day workmanship

What AS means

Frigidaire dehumidifiers with a digital display, including the FFAD, FFAP and FGAC families, show AS when a temperature or humidity sensor has stopped giving the control a usable reading. The control needs those readings to decide when to run the compressor and fan. With AS on the display, the unit may run constantly, stop running, or ignore the humidity setting you chose. The same message group also covers ES, F1, F2, L1 and F5.

Common causes of AS

The humidity or temperature sensor and its plug
The sensor wiring back to the board
The control board input that reads the sensor

✓ One safe check you can try

1. Unplug the dehumidifier and give it a minute. 2. Plug it back in and set a target humidity. 3. Check that the air intake and the filter are clean and not blocked. 4. If AS is still showing, schedule service. 5. Write down what the display showed and when, so we can compare it with what we find.

! Why to stop there

The code groups several sensors, so we confirm which one has stopped reporting before ordering anything.
A power reset only shows if the reading was a one-time glitch.
If the unit is an older one and the repair does not make sense, we will say so before any work starts.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Dehumidifier codes

Pump + Bucket Full indicators flashingFrigidaire FFAP5034W1 Dehumidifier Pump and Bucket Full Lights Flashing: Hose Check ECFrigidaire Dehumidifier Code EC: Alert for the Sealed System EH00Frigidaire FHDP5033W1 Dehumidifier Code EH00: Error Reading the Memory Chip EH60 / EH61Frigidaire FHDP5033W1 Dehumidifier Codes EH60 and EH61: The Sensor Needs Testing ESFrigidaire Dehumidifier Code ES: Sensor Reading Is Not Coming Through F0Frigidaire Dehumidifier Code F0: Cooling Circuit Is Not Working F1 or F2Frigidaire Dehumidifier Codes F1 and F2: Sensor Failure with a Dead Reading FilterFrigidaire Dehumidifier Filter Light: Cleaning Reminder at 250 Hours

ASAS questions

Why is my dehumidifier showing AS?

AS means one of the unit's temperature or humidity sensors is no longer sending a usable reading. The control cannot manage the unit properly without it, so you may see odd running or no dehumidifying.

Can I keep using the dehumidifier with AS?

We would not rely on it. Without a good reading, the unit may run when it should not or stop when the room is still damp. A sensor check is the next step.

Is it worth repairing an older dehumidifier for a sensor?

Often yes, because a sensor repair can be modest. We give you the written price first and tell you honestly if the age of the unit makes replacement the better choice.

Book a visit

Still seeing AS?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 844-8518