Speed Queen Commercial Washer Error Code EC:31: Hotlisted Card
EC:31 means a blocked (hotlisted) card was inserted into the reader. The manual says the card is hotlisted and the control will destroy it. This is not a washer problem, so use a different card or contact the laundry owner.
Low: it is a card rejection, and the washer works normally with a valid card.
- Code
- EC:31
- Maker
- Speed Queen
- Equipment
- Washers
- Applies to
- Speed Queen/Alliance commercial automatic washers H002C: EDC (Micro-wand IIIe) models, MDC models, NetMaster models (model numbers p. 6)
What does Speed Queen error code EC:31 mean?
Laundry owners can block a card that is lost, stolen or otherwise not allowed. A blocked card is called hotlisted. When someone inserts such a card, the reader recognizes it and the washer shows EC:31 with the text “Hotlisted Card Inserted Into Reader”. The manual's explanation is simple: the card is hotlisted, and the control will destroy it.
That last part is why customers sometimes think the machine has swallowed their card by mistake. The behavior is intended in the manual's description. The washer itself is not malfunctioning, and the reader is not reported as bad. The practical answer for the customer is to use a different payment method and to ask the laundry owner why the card was blocked. For the owner, the code is a useful record that a blocked card was tried. There are no cause lists or reset steps in the manual beyond the statement about the card.
Affected models and control systems
Speed Queen/Alliance commercial automatic washers covered by troubleshooting guide H002C: the EDC (Micro-wand IIIe) models, the MDC models and the NetMaster models. The guide lists the model numbers on its page 6.
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
- EC:31 displays right after a card goes in
- The card is not returned
- Other cards work normally on the same washer
Possible causes
Likely causes — what usually sits behind error code EC:31 on this control. A technician confirms which one it is before any part is replaced.
- A card that has been blocked (hotlisted) in the card system was inserted into the reader
- A customer card that was reported lost and later found, but never unblocked
- A card copied or issued from a list that is still marked as blocked
Safe checks before calling for service
- Use a different, valid card and confirm the washer accepts it.
- Do not try to retrieve a destroyed card from the slot.
- Ask the laundry owner or attendant why the card was blocked.
- If the owner says the card should be valid, give them the card number and the time of the attempt.
How a technician diagnoses error code EC:31
- Confirm that a second card works, which shows the reader is fine.
- Ask the owner whether the card appears on the blocked list.
- Review how the card system distributes its blocked list to the machines.
- Check the reader only if good cards are also rejected with EC:31.
- Replace the reader only if it flags valid cards as blocked.
- Whether a card should stay blocked is a decision for the card system owner, not a repair.
- Looking at the blocked list means working with the card system's own programming.
- If good cards are flagged, the cause may sit in the system data rather than the washer.
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.
Related Speed Queen washer error codes
Why did the washer keep my card?
The manual says the control destroys a hotlisted card, so this is the intended response to a blocked card.
Can I get a refund?
That is up to the laundry owner, who controls the card system.
Is the washer broken?
No. The manual does not describe a failure; it describes a blocked card being rejected.
Need help with Speed Queen error code EC:31?
A technician confirms the cause on site and gives you the price in writing before any work starts.