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Error code · Dehumidifier

Frigidaire Dehumidifier Codes E4 and C5: Control Board in Trouble

On Frigidaire dehumidifiers with a digital display, including the FFAD, FFAP and FGAC families, E4 or C5 is reported as an electronic control failure. For E4 specifically, the problem is communication between the display board and…

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Code
E4 or C5
Appliance
Dehumidifier
Brand
Frigidaire
Warranty
30-day workmanship

What E4 or C5 means

On Frigidaire dehumidifiers with a digital display, including the FFAD, FFAP and FGAC families, E4 or C5 is reported as an electronic control failure. For E4 specifically, the problem is communication between the display board and the main control board. You will see the code on the display and the unit may not respond to buttons or may stop dehumidifying. It points to the control electronics rather than the cooling system.

Common causes of E4 or C5

  • The connection between the display board and the main board
  • The display board
  • The main control board
✓ One safe check you can try

1. Pull the plug on the dehumidifier and wait about a minute. 2. Plug it back in and press the power button. 3. Make sure the unit is plugged straight into a wall outlet, not an extension cord. 4. If E4 or C5 returns, stop using the unit and call us.

! Why to stop there
  • The code does not tell us which board or which connection has the problem.
  • We test the link first because it is a smaller repair than a board.
  • If the unit is older and a board would cost more than it is worth, we will tell you before 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.
→Same appliance

Other Dehumidifier codes

H3 or E5Frigidaire Dehumidifier Codes H3 and E5: Compressor Overload Protection L1 or F5Frigidaire Dehumidifier Codes L1 and F5: The Humidity Sensor Lost Its Reading LCFrigidaire FHDD5034Y1 Dehumidifier Code LC: Control Lock Turned on PUFrigidaire Pump Dehumidifier Code PU: Bucket Not Pumping Out 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
E4 or C5E4 or C5 questions
What does E4 mean on my dehumidifier?

E4 means the display board and the main control board are not communicating. The unit may not take commands or may stop running until that link is working.

Is C5 the same as E4?

Both are listed as an electronic control failure on these dehumidifiers. E4 gives the extra detail of display-to-main board communication. We test the control electronics for either one.

Will a power reset clear it?

It might if the cause was a brief glitch. If the code comes right back, the boards or the connection between them need to be checked.

Book a visit

Still seeing E4 or C5?

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

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