Electrolux Dryer Error Code E5B

E5B means the dryer's control thermistor detected no change in temperature over a set period of time, indicating the dryer is running but not producing heat. The code points to a fault somewhere in the heating system. Diagnosis starts at the heater relay RL2 on the electronic control board to pinpoint whether the problem is the control board itself, upstream wiring, or a component further along in the heater circuit.

Running the dryer with an active E5B code means the dryer is tumbling without heat, so your clothes will not dry properly. While the dryer is not immediately dangerous in this state, continuing to run cycles without resolving the fault wastes energy and puts unnecessary wear on the motor and drum components. It is best to diagnose and repair the heating fault before resuming normal use.

Diagnosis starts with setting the cycle selector to NORMAL, the temperature selector to HIGH HEAT, and measuring voltage across the terminals of relay RL2 on the electronic control board while the dryer is running. On electric models, a reading of 240V at RL2 with no heat present means the control board needs replacement. A reading of zero volts requires checking voltage at the COM terminal of RL2 after disconnecting the NO terminal wire, which will determine whether the issue is an open wire upstream or a fault further along in the heater circuit such as a thermal fuse, thermostat, heating element, or gas valve component.

Resetting the dryer by cutting power may temporarily clear the code, but E5B will return as soon as the dryer completes another cycle without detecting a temperature rise. The underlying heating fault must be diagnosed and repaired for the code to stay cleared. Simply resetting without fixing the root cause will not restore heat to the dryer.

Repair costs depend on which component has failed. Thermal fuses and cycling thermostats are generally inexpensive parts, typically in the range of $10 to $40 for the part, with labor costs added if you hire a technician. A replacement electronic control board is the most expensive possibility, often ranging from $100 to $300 or more for the part alone. Getting the circuit properly diagnosed before ordering parts will help avoid unnecessary expenses.