Electrolux Dryer Error Code 0x5B

Error code 0x5B indicates an FCV Under Voltage Failure, meaning the dryer's control system has detected that the voltage in the fan control circuit is below the required level. This is caused either by an insufficient power supply reaching the dryer or by a defective main control board. The dryer will typically stop operating until the fault is diagnosed and corrected.

You should not continue using the dryer while this fault is active. An under-voltage condition can indicate serious wiring problems or a failing electrical component, both of which can pose fire or electrical hazards. Stop using the dryer and resolve the underlying cause before resuming operation.

Repair costs depend on the cause. If the issue is a tripped breaker or a loose connection, there may be little to no cost involved. A replacement circuit breaker typically runs in the range of $10 to $50 for parts, while a new main control board for an Electrolux dryer can range from $100 to $300 or more for the part alone, plus labor if a technician is performing the repair.

Start by verifying that the dryer's power supply measures 208/240 VAC at the wall outlet or terminal block. Check for a tripped circuit breaker, loose terminal block connections, or a damaged power cord. If the supply voltage is correct and stable, the main control board is the likely cause and should be inspected or replaced by a qualified technician.

A reset may temporarily clear the code, but if the underlying cause has not been fixed, the fault will return. A power supply problem or defective main control board will continue to trigger 0x5B until the root cause is properly diagnosed and repaired. Always address the source of the fault rather than relying on resets.