Error code · Professional Laundry

ASKO Professional Dryer Code E9: Boards Out of Step on Software Version

Medium · inspection needed

Code: E9
Appliance: Professional Laundry
Brand: ASKO
Warranty: 30-day workmanship

What E9 means

E9 on an ASKO Professional TDC1773 dryer is read as a software version mismatch between the two electronic boards. The TDC1773 is sold in the US for multifamily and light commercial laundry rooms, and it uses a power board and a user interface board that must run matching software. After a board has been replaced or has lost its settings, they may no longer agree, and the dryer shows E9 instead of starting normally.

Common causes of E9

A recently replaced board with different software
A power board and interface board from different revisions
A board that lost or corrupted its stored software
Wiring between the boards interrupting the handshake

✓ One safe check you can try

1. Turn the dryer off and leave it for a few minutes. 2. Turn it on again and see whether E9 appears right away. 3. Note whether any board or control work was done on this dryer recently. 4. If E9 stays, stop using the machine and tell us what was changed and when.

! Why to stop there

Which of the two boards carries the older software
Whether the right matching board is available for your dryer
Whether a software update is possible or a board swap is needed

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Professional Laundry codes

E6ASKO Professional Dryer Code E6: Relay Problem on the Control Board E7ASKO Professional Dryer Code E7: Door Circuit Problem E8ASKO Professional Dryer Code E8: Stuck or Unresponsive Button WATER INLET FAULTASKO Professional Washer Message "Water Inlet Fault": Supply Problem E0ASKO Professional Dryer Code E0: Control Unit Problem E1ASKO Professional Dryer Code E1: Temperature Reading Out of Range E2ASKO Professional Dryer Code E2: Control and Display Not Talking DRAINING FAULTASKO Professional Washer Message "Draining Fault": Water Not Leaving the Drum

E9E9 questions

What does a software mismatch mean for my dryer?

The two control boards were made to work as a pair. If one runs a different software version, they cannot cooperate, so the dryer stops until they match again.

Can I fix E9 by resetting the dryer?

Turning it off and on will not change which software each board holds. If the code returns at once, the boards need to be matched by a technician.

Will you tell me the price first?

Yes. Call us or use the online form, and we will confirm a three-hour arrival window. You get a written price before any part is ordered, and a 30-day workmanship warranty after.

Book a visit

Still seeing E9?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 804-6320