Speed Queen Commercial Washer Error Code EC:22: Site Code Mismatch

What does Speed Queen error code EC:22 mean?

EC:22 is a card error on Speed Queen/Alliance commercial automatic washers. The display text is "Site Code Mismatch," and the manual's error listing says the card has the wrong site code. The cause given is a wrong card, and the action is to use a card with the correct site code. A site code identifies the laundry that issued the card. The washer compares the code on the card with its own, and if they differ, it refuses the card so that cards from one location cannot be used at another. The manual does not say how the site code is set or how to look it up, and it does not list other causes. It also separates this from the security ID error, which is a different check. The likely story is a customer or a staff member using a card from a sister location, or a card prepared before the washer's site code was changed. As with other card rejections, the washer is doing its job. The remedy is a correct card.

Affected models and control systems

Speed Queen/Alliance commercial automatic washers covered by manual H002C: EDC (Micro-wand IIIe) models, MDC models and NetMaster models. The code is read from the card-reader (smart card) side of these controls, and the model numbers are listed on page 6 of the manual.

Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.

What you may notice

• The display shows "Site Code Mismatch" (EC:22)
• A card was just inserted
• The washer refuses the card

Possible causes

Likely causes — what usually sits behind error code EC:22 on this control. A technician confirms which one it is before any part is replaced.

• Wrong card: the card has the wrong site code
• The card belongs to a different laundry location
• The washer's site code was changed after the card was issued
• The card was written with a typo in the site code

Safe checks before calling for service

How a technician diagnoses error code EC:22

1. Read the code and identify the card's issuing site.
2. Compare the site code on the card and in the washer.
3. Rewrite or replace the card.
4. Test the card in the washer.
5. Check the reader only if correct cards are refused.

How error code EC:22 differs from similar codes

EC:22 is about the site code; EC:21 is about the security ID.

Technical reference

Document

Commercial Automatic Washer (Metered and Nonmetered) Troubleshooting H002C

Edition

Part No. 39201R9, November 2016

Models / control

Speed Queen/Alliance commercial automatic washers H002C: EDC (Micro-wand IIIe) models, MDC models, NetMaster models (model numbers p. 6)

Section

32. EDC Error Code Listing, printed p. 59 (PDF p. 61); 41. MDC Error Code Listing, printed p. 72 (E:dr, E:FL, EC:19); 50. NetMaster Error Code Listing, printed pp. 90-93 (PDF pp. 92-95)

Checked

October 2026

We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.