Electrolux Dryer Error Code H3

The H3 code means the dryer's control board has detected that the incoming power supply voltage is too low for safe operation. The dryer monitors AC line voltage continuously and will display H3 when that voltage falls below the acceptable range. The issue can stem from the home's electrical supply, wiring, or in some cases, a faulty main control board.

No, you should not continue operating the dryer while H3 is active. Insufficient voltage can cause the motor and heating components to draw excessive current while attempting to compensate, which can damage internal components or create an overheating risk. Resolve the power supply issue before resuming use.

Repair costs vary depending on the root cause. Resetting a breaker costs nothing, while replacing a worn receptacle or breaker through an electrician might run anywhere from $75 to $250 or more depending on local labor rates. If the main control board is at fault, the board itself plus labor can bring the total repair cost to a range of $150 to $400 or higher.

Some causes of H3 are DIY-friendly, such as resetting a tripped circuit breaker or tightening loose connections at the terminal block. However, working on 240V wiring carries serious safety risks, and any work inside the dryer's terminal area should be performed with the appliance fully unplugged. If the issue traces back to home wiring or the receptacle, a licensed electrician should handle those repairs.

A power reset may temporarily clear the H3 code, but the error will return if the underlying voltage problem has not been corrected. Resetting is useful as a first step after you have addressed the suspected cause, such as resetting a tripped breaker, but it is not a fix on its own. The control board will re-detect the low voltage condition and display H3 again.