What you came for
This code says the probe plugged into the jack is not the probe the appliance expects to read. This is a compatibility message rather than a fault, and it clears with the probe removed. The wrong probe for this appliance plugged into the jack, which is exactly what the documentation warns about is both the commonest cause and the cheapest to rule out, so it goes first.
This code, as the manufacturer publishes it
Reference| Code | Documented meaning |
|---|---|
| F4 E7 | Do not use the Oven Meat Probe in the Microwave, they have different resistance values. |
What the appliance does alongside the code
- The code appears as soon as a probe is plugged in — Immediate, and it goes when the probe is unplugged.
- The temperature shown by the probe is obviously wrong — Different resistance values read as a wildly wrong temperature.
- NEAR MISS - the code is there with no probe connected — Then the jack or its wiring is the subject rather than the probe, and that is a service call.
Causes, and why they rank that way
- The wrong probe in the jack — Ranked first because it is what the documentation names: probes for different cavities use different resistance values, and one will not read correctly in the other.
- A damaged probe lead or a bent pin — Third: a lead crushed in the door or a pin pushed sideways changes what the control reads.
- The jack or its wiring — Last: a service item, and the only one on this list.
The check order this code implies
- Check that the probe belongs to this cavity — The documentation is explicit that probes are not interchangeable between cavities.
- Look at the lead and the pins for damage — A crushed lead is visible and is a probe replacement rather than a repair.
- Leave the jack to a technician — If the code stands with nothing plugged in, the jack is the subject.
What an owner can safely do
- Unplug the probe and clear the code — The appliance should return to normal cooking immediately.
About 5 min
- Inspect the lead and the plug before the next use — A crushed lead or a bent pin is a new probe, not a repair.
About 5 min
- STOP HERE if the code stands with nothing plugged in — Unplug the appliance or switch off its breaker before any panel comes off; a capacitor can hold a charge after the power is off.
The safety line on this appliance
Safety
Microwave safety is different in kind from the rest of the kitchen. The capacitor in the power circuit stores a lethal charge after the appliance is unplugged, so unplugging is a precaution and not a fix. Unplug it or switch off its breaker, keep the cabinet shut, and leave the interlocks as the manufacturer fitted them.
The point at which you call
Nothing urgent here. This is the mildest code in the set and it usually ends with a probe being put back in the right drawer. Short of that: call only if the code remains with the probe removed: then the jack or its wiring is the subject, and that is behind the cavity trim.
The nearest codes in this set
The scope of this reading
This page is the appliance-class reading of one code, for the combination model lines that share a probe jack between cavities. It stops short of model-specific figures on purpose: those differ by family, and a plausible-looking wrong number is worse than none. If your model has a page of its own it is the more specific answer and is linked from the code index below; use this page as the general orientation.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
