Installing Bertazzoni built-in appliance surge protection at the whole-home level is one of the most cost-effective steps a homeowner can take to protect the sophisticated electronic control boards in every Bertazzoni Professional, Master, Heritage, Italia, and Modern Series appliance. Modern built-in appliances contain microprocessor-based control systems that are significantly more sensitive to voltage transients than the electromechanical appliances of previous generations.
Why this matters
Power surges originate from multiple sources: utility grid switching, lightning strikes on nearby distribution lines, large motor loads cycling on and off within your home, and even HVAC compressor startup. A surge lasting only a few microseconds at elevated voltage can degrade or destroy the control board of a refrigerator column, wall oven, dishwasher, or induction cooktop — damage that is often not covered under manufacturer warranty because it is classified as an external electrical event. A properly rated service-entrance surge protective device (SPD) can absorb the vast majority of surge energy before it reaches your appliances.
Warning signs
- An appliance displaying error codes or becoming unresponsive immediately after a storm or known grid event
- Multiple appliances exhibiting unusual behavior at the same time, suggesting a common electrical event
- A burning or ozone smell from an appliance that was functioning normally before a power outage and restoration
- Flickering display panels or touchscreen controls that do not respond correctly after a power interruption
Inspection schedule
Have a licensed electrician inspect your home’s main panel surge protective device annually, and replace it after any confirmed surge event — SPDs sacrifice themselves to protect downstream equipment and must be replaced after significant surge absorption. If your home does not currently have a service-entrance SPD, arrange installation before the next storm season.
What to do
- Contact a licensed electrician to assess whether your main electrical panel includes a UL 1449-listed Type 1 or Type 2 surge protective device rated for residential service-entrance installation.
- If no SPD is present, request installation of a whole-home device rated at a minimum of 40kA per phase. This is the single most important step for protecting built-in appliance electronics.
- Do not rely on power strip surge protectors for built-in appliances — these devices are not connected to hardwired appliances and provide no protection for refrigerators, ovens, or dishwashers on dedicated circuits.
- After any power outage and restoration, wait two minutes before checking appliance function to allow control boards to fully initialize on stable voltage.
- If an appliance displays abnormal behavior following a power event, contact Bertazzoni North America at 1-866-905-0010 before attempting to reset or continue using the appliance.
When to call a technician
Control board damage from a power surge may not be immediately evident — corrupted firmware or damaged capacitors can cause intermittent failures that appear days or weeks after the event. If you suspect surge damage to any Bertazzoni appliance, a factory-trained technician can perform control board diagnostics and determine whether a board replacement is required before the appliance is returned to service.