F5 Control board error

moderate

The Ge F5 error code on your microwave indicates: Control board error. This typically requires troubleshooting the communication system.

GE Microwave Affects 1 model

What Causes Error F5

high likelihood #1

Loose wire connection between boards

A ribbon cable or wire harness between the main board and display/UI board has come loose.

medium likelihood #2

Power surge damage

A voltage spike damaged communication circuits on one or more control boards.

medium likelihood #3

Failed control board

One of the PCBs has a failed component and can no longer communicate.

low likelihood #4

Corroded connector pins

Moisture has caused connector pins to corrode, creating intermittent connections.

How to Fix Error F5

  1. Step 1: Power cycle the appliance

    Unplug for 5 minutes. Communication errors are frequently caused by electrical glitches that clear with a hard reset.

  2. Step 2: Check for loose connections

    Unplug the appliance, remove the access panel(s), and reseat every wire connector you can find between the control boards. Press each one firmly until it clicks.

    ⚠️ Always unplug before accessing internal components.

  3. Step 3: Inspect ribbon cables

    If your appliance uses flat ribbon cables between boards, check for tears, kinks, or connectors that have worked loose from vibration.

  4. Step 4: Look for signs of damage

    Examine both control boards for burned components, bulging capacitors, scorch marks, or corroded connector pins. Any visible damage means that board needs replacement.

  5. Step 5: Replace the communication harness

    If connectors look corroded or a cable is damaged, replace the wire harness between boards.

  6. Step 6: Replace the faulty board

    If reseating connections doesn't help, one of the control boards has failed. The main control board is the most common failure.

When to Call a Professional

If you cannot identify which board has failed, or if the error appeared after a power surge or lightning strike

  • Diagnosing which of multiple boards has failed requires specialized tools
  • Power surge damage may affect multiple components
  • Control board replacement often requires programming or calibration

Video Repair Guides

Watch a repair walkthrough for this error code on YouTube:

▶ Search YouTube for "GE microwave error F5 fix"

Models Affected

This error code has been reported on the following GE microwave models:

JVM6175SKSS