Jenn-Air Dishwasher Error Code E:27

E:27 is an undervoltage fault indicating that the dishwasher's control board detected continuous supply voltage below 170 volts AC. As a protective response, the appliance terminates the current wash programme. This is a power supply issue, not a fault with the dishwasher's internal components. The first step is to measure the voltage at the supply circuit.

No, you should not attempt to force the dishwasher to run while the undervoltage condition exists. Operating motors and heating elements below their required voltage threshold can cause overheating and premature failure of components. Resolve the power supply issue before running the appliance again.

Because E:27 points to the power supply rather than a dishwasher component, costs depend on what is found in your electrical system. Simple fixes like tightening a loose connection may cost very little, while replacing a circuit breaker typically runs between $75 and $200 including an electrician's labor. If the utility feed to your home needs attention, costs can vary widely depending on your provider's policies.

Start by measuring the voltage at the dishwasher's supply outlet or junction box with a multimeter. If the reading is below 170 volts, check for overloaded circuits, loose wiring connections at the junction box or breaker panel, or a failing circuit breaker. If voltage at the main panel is also low, contact your utility provider. Persistent wiring or breaker issues should be addressed by a licensed electrician.

Resetting the dishwasher by cutting power at the breaker and restoring it may clear the displayed code temporarily, but the error will return if the underlying low-voltage condition is not corrected. The control board will detect undervoltage again as soon as a new cycle starts and supply voltage drops below 170 volts.