Bertazzoni REF18WCB/REF24WCB Codes E7 and E8: Middle Zone Frosting Probe Open or Shorted

What E7/E8 means

On Bertazzoni REF18WCB and REF24WCB built-in wine coolers such as the REF24WCBPNV and REF18WCBPLV, E7 and E8 refer to the frosting probe of the middle zone. E7 means the circuit is open, and E8 means it is shorted. The buzzer gives a triple "tic", the code flashes every 10 seconds, and the on/off key silences the sound. Either code points to the same probe, so the repair path is the same.

Common causes of E7/E8

A middle zone frosting probe that has failed open (E7) or shorted (E8)
A damaged lead or loose plug at the probe
Frost or moisture covering the probe
A control board input that cannot read it

✓ One safe check you can try

1. Press the on/off key to quiet the buzzer. 2. Check the middle zone for visible frost on the back wall. 3. Leave space between bottles and the wall. 4. Monitor the zone temperature with a thermometer. 5. Call us and tell us if the code reads E7 or E8.

! Why to stop there

The probe is at the cooling surface behind the liner and the surface is fragile.
Scraping frost away can damage the sealed system.
Open and short readings need meter testing to decide between a probe and a wiring repair.

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 Wine Column codes

Upper or lower zone too warmBertazzoni Wine Column Message "Upper or Lower Zone Too Warm": Zone Above Setpoint E3/E4Bertazzoni REF18WCB/REF24WCB Codes E3 and E4: Upper Zone Frosting Probe Open or Shorted E5/E6Bertazzoni REF18WCB/REF24WCB Codes E5 and E6: Middle Zone In-Cabinet Probe Open or Shorted E11/E12Bertazzoni REF18WCB/REF24WCB Codes E11 and E12: Lower Zone Frosting Probe Open or Shorted Power FailureBertazzoni Wine Column Message "Power Failure": Long Outage Recorded Upper or lower zone too coldBertazzoni Wine Column Message "Upper or Lower Zone Too Cold": Wait Before Calling Check condenserBertazzoni Wine Column Message "Check Cond": Time to Clean the Condenser Door openBertazzoni Wine Column Message "Door open": Door Left Open Too Long

E7/E8E7/E8 questions

What is the middle zone frosting probe?

It is the probe that watches the cold surface of the middle zone for frost. The control needs its reading to manage defrosting for that zone.

How do E7 and E8 differ?

E7 is an open circuit. E8 is a short. In both cases the control cannot read the middle zone frost information, so the fix is at the probe or its wiring.

Is it urgent?

Not an emergency, but without defrost information frost can build up over weeks and the zone may warm. A visit within a week is a sensible plan.