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Error code · Dehumidifier

Frigidaire Dehumidifier Codes L1 and F5: The Humidity Sensor Lost Its Reading

L1 and F5 are the last two sensor messages on Frigidaire dehumidifiers with a digital display in the FFAD, FFAP and FGAC families. They tell you a temperature or humidity sensor has failed and the control…

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Code
L1 or F5
Appliance
Dehumidifier
Brand
Frigidaire
Warranty
30-day workmanship

What L1 or F5 means

L1 and F5 are the last two sensor messages on Frigidaire dehumidifiers with a digital display in the FFAD, FFAP and FGAC families. They tell you a temperature or humidity sensor has failed and the control no longer has a good reading. The unit may run without regard to the room, shut off early or ignore your humidity setting. They belong to the same group as AS, ES, F1 and F2.

Common causes of L1 or F5

  • The temperature or humidity sensor
  • The sensor plug or wiring
  • Whether the board is reading the sensor correctly
✓ One safe check you can try

1. Unplug the dehumidifier and wait about a minute. 2. Plug it back in and set a humidity target. 3. Wash the filter and clear the intake. 4. If L1 or F5 is still shown, turn the unit off and schedule service. 5. Note which code you see and when it appears.

! Why to stop there
  • The codes do not name which sensor, so we test the sensors one by one.
  • A reset only helps if the reading was a one-time glitch.
  • You get the price in writing before any repair.
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.
→Same appliance

Other Dehumidifier codes

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 H3 or E5Frigidaire Dehumidifier Codes H3 and E5: Compressor Overload Protection
L1 or F5L1 or F5 questions
What are L1 and F5 reporting?

Both mean a sensor has failed. Without a good reading, the dehumidifier cannot decide when to run, so it may run too much or not enough.

Are L1 and F5 different from ES and AS?

They are all in the same sensor group on these units. The letters differ, but the first step is the same: restart the unit, and if the code returns, have the sensors tested.

Can I replace the sensor myself?

We do not recommend it. The sensors are inside the unit, and we do not ask owners to open it. We can test and replace the right part and give you the price first.

Book a visit

Still seeing L1 or F5?

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

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