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Error code reference
Speed Queen Washer Error Code EC:20
Unreadable card inserted into reader due to faulty card or dirty contact.
SourceSpeed Queen NetMaster Frontload Washer - Service Manual: Programming (C853I, SWFA61WN)p. 128
Diagnostic procedure
The full EC:20 procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Clean chip on card or card reader contacts. Try card again. If error persists, card may be faulty.
SourceSpeed Queen NetMaster Frontload Washer - Service Manual: Programming (C853I, SWFA61WN)p. 128
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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