Bertazzoni 24-Inch Bottom-Mount Code F4: Freezer Compartment Sensor

What F4 means

On Bertazzoni 24-inch bottom-mount refrigerators, including the REF24BMBPNB and the REF24BMBIPNV group, F4 refers to the freezer compartment sensor. This probe reports the air temperature in the freezer to the control. The appliance still cools, but a technician should check it. You see the F4 code on the temperature display while the compressor goes on cycling. The fridge side has its own sensor, so this code concerns the freezer only.

Common causes of F4

A freezer compartment sensor with an open or shorted reading
A damaged lead or loose connector at the freezer probe
Ice build-up around the sensor from a poorly sealed drawer
A main board input that cannot read the probe

✓ One safe check you can try

1. Check that frozen food is hard and the drawer closes fully. 2. Clean the drawer gasket and remove frost from the rim. 3. Keep packages away from the air slots at the back. 4. Turn the breaker off for one minute and on again. 5. If F4 returns, do not change settings; call us.

! Why to stop there

The freezer probe is behind the back panel, and the panel is held with clips that break easily.
A weak sensor reading may only show up when the freezer is full or the room is warm.
If the control reads the freezer wrongly, food can thaw or freeze-burn without any further message.

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 Refrigerator codes

Fridge too warmBertazzoni TFT Column Message "Fridge too warm": refrigerator section above its setting Ice Maker Does Not WorkBertazzoni BMBI Refrigerator Message "Ice Maker Does Not Work": icemaker off or water not connected Lower unit openBertazzoni BMBI Refrigerator Message "Lower unit open": freezer door left open Lower unit too coldBertazzoni REF30/36BMBI Message "Lower unit too cold": Freezer Drawer Running Below Setpoint Lower unit too warmBertazzoni REF30/36BMBI Message "Lower unit too warm": Freezer Above Its Target Power Failure!!Bertazzoni Column Refrigerator Message "Power Failure!!": Long Power Interruption Recorded Refrigerator too warm / Refrigerator too coldBertazzoni REF30/36BMBI Messages "Refrigerator too warm" and "too cold": Fresh-Food Side Off Target Replace filterBertazzoni REF30/36BMBI Message "Replace filter": Water Filter Cartridge at 30 Percent

F4F4 questions

Is F4 the same as the freezer being too warm?

No. F4 reports a problem with the sensor that measures the freezer air. The freezer itself may be at the right temperature, but the control cannot be sure, so check with a thermometer.

Will my frozen food be fine?

Usually, since the cooling continues. Look for softening or new ice crystals. If food feels soft, the control may be running the cooling too little because of a wrong reading.

What does the visit involve?

We check the sensor reading with a meter, inspect the wire and connector, and tell you the price in writing before any part is replaced. Our work carries a 30-day workmanship warranty.