KitchenAid · Dryer Moderate

F70 — Main/User Interface Communication

The main control board (ACU) and the user interface board are not communicating. Buttons may be unresponsive or the display may freeze.

Keep using it?
Yes, with caution
DIY difficulty
Moderate
Verified against
kitchenaid.com ↗

How to fix it

  1. Unplug the dryer for 5 minutes and try again.
  2. Open the console and reseat the harness between the UI and the main control.
  3. Inspect for damaged pins or burnt traces.
  4. If F70 persists, swap the user interface board first (most common).
  5. If still failing, replace the main control board (ACU).

Why it happens

Typical signs: F70 code · Buttons do nothing · Display lights but no response · Cycle won't start

  • Loose ribbon/harness between UI and ACU Connector partially seated
  • Failed user interface board Logic fault on the console PCB
  • Failed main control board ACU communication driver damaged

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Dryer user interface board Common replacement
    Amazon →

More KitchenAid dryer codes

AF AF — Airflow Restriction E1 E1 — Thermistor Open Circuit E2 E2 — Thermistor Shorted F01 F01 — Main Control Board Failure F22 F22 — Exhaust Thermistor Fault F23 F23 — Exhaust Thermistor Shorted

All KitchenAid codes → All dryer codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: kitchenaid.com.