Whirlpool · Microwave Serious
F7 — Appliance Control Board / Microcomputer Fault
The microcomputer (main control) reported an internal fault and the unit cannot execute the commanded function. Effectively a 'replace the board' code if it survives a power reset.
- Keep using it?
- Limited use only
- DIY difficulty
- Moderate
- Verified against
- producthelp.whirlpool.com ↗
How to fix it
- Power down at the breaker for 1 minute and watch for the code's return.
- Unplug the microwave (or breaker off), remove the cover, and reseat every connector at the appliance control board.
- Inspect the board visually for burnt components, swollen capacitors, or scorched traces.
- If F7 returns after reseating, replace the appliance control board. Order by your model and serial number.
- Don't replace the keypad for F7 — F7 is the main control, not the user interface.
Why it happens
Typical signs: F7 on the display · Unit becomes unresponsive after the code · Code returns immediately after a Cancel press
- Failed appliance control board Most common — typical after a power surge or simple end-of-life.
- Loose harness at the control board Reseat connectors before condemning the board.
- Wiring damage from heat or vibration Inspect harnesses near the cavity top.
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.
- Whirlpool microwave electronic control board Common replacementAmazon →
More Whirlpool microwave 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: producthelp.whirlpool.com.