Dexter Error Code NO-CODE — Inlet valve

Service Guy AI • Washer • Medium severity • Intermediate skill • ~30 min repair

Quick fix: Check and ensure the water supply is turned on.

What Does Dexter Error Code NO-CODE Mean?

Dexter washer: Inlet valve

This is a medium-severity fault. The machine may complete the current cycle but is signalling a problem you should resolve before it escalates.

Possible Causes (5)

Dexter engineers identify the following root causes for fault code NO-CODE. Work through them in the order shown — they are listed from most common to least common.

  1. Inlet valve solenoid failure
  2. Clogged inlet filter
  3. Faulty water supply
  4. Control board malfunction
  5. Wiring issue to the inlet valve

Step-by-Step Troubleshooting (6 steps)

Follow this sequence to diagnose and clear Dexter error code NO-CODE. Power down and unplug the machine before any internal inspection.

  1. Disconnect power before servicing.
  2. Inspect the inlet valve for any visible damage.
  3. Check the inlet filter for clogs and clean if necessary.
  4. Verify that the water supply is turned on and functioning.
  5. Test the inlet valve solenoid with a multimeter for continuity.
  6. Examine wiring connections to the inlet valve for any signs of wear or damage.

Required Parts

Have these Dexter OEM part numbers ready before starting the repair. AAdvantage Laundry Systems carries verified parts for every code in this database.

  • Inlet valve assembly
  • Inlet filter

Diagnostic Test Mode

Enter Dexter diagnostic test mode: Hold 'Medium + Start' for 5 seconds

Skill Level & Repair Time

This repair is appropriate for an experienced laundromat owner or in-house technician. You should be comfortable removing service panels, reading wiring diagrams, and using a multimeter to test continuity and voltage. Plan for approximately 30 minutes of active repair time once parts are on hand.

Get AI-Powered Diagnosis

If the steps above don't resolve Dexter NO-CODE, run a free Service Guy AI diagnosis. Upload a photo of the error display and get an AI-generated repair plan tied to your exact Dexter model number, including supplier links for required parts and on-call technician escalation.

Other Dexter Error Codes

F4 — Error Code F4COMM_ERROR_1 — Error Code COMM_ERROR_1F10 — Error Code F10F12 — Error Code F12F17 — Error Code F17F21 — Error Code F21F28 — Error Code F28F26 — Error Code F26
All Dexter Error CodesAll Error CodesService Guy AI DiagnosisOrder OEM PartsEquipment Hub

By — Founder, WashBizHub. Third-generation laundromat operator. Reviewed by the WashBizHub editorial team.

 · 

WashBizHub — Laundromat Industry Intelligence Platform. Contact · About · Privacy Policy · Terms of Service

© 2026 WashBizHub. WashBizHub is editorially independent. Where we earn affiliate revenue (e.g., AAdvantage funding referrals), it is clearly labeled.