Electrolux Dryer Error Code EH3

EH3 means the dryer's control board has detected that the incoming power supply voltage is too low for safe operation. The dryer will not run while this condition is present. The fault can point to a low utility voltage, a wiring or breaker issue, an incorrect MCF configuration, or a malfunctioning main control board.

A reset may temporarily clear the code, but EH3 will return if the underlying cause has not been resolved. Because this code reflects a real measured condition at the time of detection, clearing it without addressing the voltage supply or configuration issue will not produce a lasting fix.

Repair costs depend on the root cause. If the issue is a loose connection or a tripped breaker, there may be little to no cost beyond a service call fee, typically in the range of $75 to $150. If the main control board requires replacement, parts and labor combined generally range from $200 to $400 or more depending on the model and local labor rates.

Start by measuring the voltage at the dryer's outlet or terminal block with a multimeter to confirm the supply is within the required range. Check the circuit breaker and all wiring connections for looseness or damage. If voltage is correct, verify the MCF configuration setting. If all of those check out, the main control board may need to be replaced.

You should not attempt to force the dryer to operate while EH3 is active. Running the dryer on insufficient voltage can stress the motor, heating element, and control electronics, potentially causing additional damage. Address the power supply issue before resuming use.