Frigidaire Dishwasher Error Code E:30

The E:30 code on a Frigidaire dishwasher indicates an over-voltage condition, meaning the control system has detected that the incoming supply voltage is above the acceptable range of approximately 98 to 120VAC. The dishwasher triggers this fault to protect its internal electronics from damage caused by excessive voltage. The issue typically originates in the home's electrical supply or wiring rather than inside the dishwasher itself.

You should not continue using the dishwasher while the E:30 code is active. An over-voltage condition can damage the control board, motor, and other sensitive electronics inside the appliance. Running the dishwasher under these conditions also poses a potential electrical hazard. Address the voltage issue first before attempting to run a wash cycle.

If the fix involves only tightening wiring connections, the cost may be minimal or limited to a service call fee, typically in the range of $75 to $150. If a licensed electrician is needed to correct a home wiring or panel issue, costs can range from $100 to $400 or more depending on the scope of work. Replacing the power module, if required, generally adds $80 to $200 in parts plus labor.

Start by checking the house wiring connections at the junction box and measuring the supply voltage at the power module harness connector to confirm it is within 98 to 120VAC. Tighten or reseat any loose connections. If the voltage is consistently above 120VAC, contact a licensed electrician to evaluate the home electrical panel and supply circuit. If wiring checks out normal and the fault persists, the power module may need replacement.

A reset may temporarily clear the E:30 code from the display, but the fault will return if the underlying over-voltage condition has not been corrected. Resetting without fixing the supply voltage or wiring issue does not resolve the problem and may allow continued exposure to damaging voltage levels. Diagnose and correct the voltage issue before relying on a reset.