Ex91
What code Ex91 means on a Electrolux tumble dryers, what causes it, and which part to check first.
● SEVERITY: HIGH
Electrolux Ex91 means: User interface communication failure. The documented cause is: Unplug the dryer and check the wire harness connections between the user interface and main electronic control board. Reconnect any loose wires or replace the wire harness if damaged.
What Ex91 means
User interface communication failure
The display shows Ex91 and the machine stops until the fault is cleared.
What the technical documentation says
Causes documented in the technical source published by applianceaid.com
| DOCUMENTED CAUSE OR CHECK |
|---|
| Unplug the dryer and check the wire harness connections between the user interface and main electronic control board |
| Reconnect any loose wires or replace the wire harness if damaged |
| If the wire harness connections are okay, replace the user interface board |
| If the problem continues, replace the main electronic control board |
Replacement parts
Tools you'll need
Before you open anything
Unplug the machine before removing any panel. Lint is flammable: never run a dryer with the filter removed, and clear the duct if the code points to airflow.
What to check, in order
From the quickest check to the one that needs a technician.
Find a specialist
TroubleAtlas Pro
TroubleAtlas Certified
What is the TroubleAtlas Score?
Beyond fault codes and specialists, we rate the reliability of appliance brands and models — a transparent score that owes nothing to the manufacturer. The reference to check before you buy or repair.
See all appliance scores →TA YouTube Channel
Frequently asked questions
What does Ex91 mean on a Electrolux?
User interface communication failure The documented cause is: Unplug the dryer and check the wire harness connections between the user interface and main electronic control board. Reconnect any loose wires or replace the wire harness if damaged. If the wire harness connections are okay, replace the user interface board. If the problem continues, replace the main electronic control board
Can I fix Ex91 myself?
It depends on the part involved: Unplug the dryer and check the wire harness connections between the user interface and main electronic control board. Reconnect any loose wires or replace the wire harness if damaged. If the wire harness connections are okay, replace the user interface board. If the problem continues, replace the main electronic control board Clearing a filter or straightening a hose is within reach of anyone; anything behind a panel means mains electricity and water together — that is a job for a technician.
Does Electrolux use other codes on this appliance?
Yes: we document 46 other codes for Electrolux on this tumble dryers. They are listed at the bottom of this page, each with its own meaning.
Does the same code mean the same thing on other brands?
Often not. The same two characters can point to completely different faults depending on the manufacturer — always check the page for your own brand.