Model reference

Maytag MDC4809PAB1

Dishwasher

6 documents23 error codes5 service modes

Available documentation

Tech Sheet

Tech Sheet W10321980 RevB FR2 pg
Covers this model
Tech Sheet - W10321979 - Rev B2 pg
Covers this model
Maytag Dishwasher MDB4630AWW5 Tech Sheet W103219792 pg
Covers this model

Installation Guide

Instruction Sheet8 pg
Covers this model
Installation Instructions12 pg
Covers this model
Instruction Sheet for Heater Element kit2 pg
Covers this model

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Control detected K1 pilot relay stuck

From Tech Sheet W13933942, p.34:

1.Access service mode to confirm the active fault code and read stored error history.

2.Measure control board supply voltage at test points. Expected: 12 VDC and 5 VDC.

3.Inspect all connectors on the main control for corrosion or backed-out pins.

Part WPW10804018

Electronic control board

Error codes (23)

CodeMeaning

1-1Control detected K1 pilot relay stuck closed.1-2Damaged or corrupted memory on control board or incompatible software…10-1Dispenser electrical problem 2-1Control detected stuck key(s) in keypad or keypad connection 2-2Damaged or corrupted memory on control board or incompatible software…3-1Open connector or component in Temperature Sensing Circuit, open or faulty…3-2Shorted connection or component in Temperature Sensing Circuit, shorted or…3-3OWI (Optical Water Indicator) failure / failed calibration.4-3Wash motor not running 5-1Door switch stuck open 5-2Door switch stuck closed 6-1Low or no water (mechanical problem)6-2Fill valve electrical problem 6-3Suds/air in pump 6-4Float switch open 6-6Cool water 7-1No heat 7-2Heater stuck on 8-1Slow drain 8-2Drain motor electrical problem 8-3Drain stuck on 9-1Diverter position problem (some models).9-2Diverter position problem (some models).

Service modes (5)

Error Code ReadingEnter Service Diagnostics Cycle (1-2-3-1-2-3-1-2-3). Interval 18: Display test (all LEDs on)…
Error Code Reading (within Service Diagnostics)After entering Service Diagnostics Cycle
Rapid Advance Mode (Cycle Operation)1
Sales Demo Mode ExitRun Service Diagnostics cycle to clear Demo mode.
Service Diagnostics Cycle1

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