mypros+
Model reference

Maytag MHWZ400TQ03

Washer

8 documents71 error codes12 service modes

Available documentation

Tech Sheet

  • Tech Sheet W10252711 Rev A16 pg
    Covers this model
  • Tech Sheet - W10252711 - Rev A16 pg
    Covers this model
  • Tech Sheet W10207733 Maytag Epic Z Washer MHWZ600TW0116 pg
    Covers this model

Service Manual

  • TECHNICAL EDUCATION JOB AID 8178686 ML-8 FRONT-LOADING WASHER EPIC z™96 pg
    Covers this model

Bulletin

  • Service Pointer - 81787722 pg
    Covers this model

Other

  • maytag epic with oxi prewash option2 pg
    Covers this model

Quick Reference

  • Quick Reference Manual2 pg
    Covers this model

Installation Guide

  • Performance Series Automatic Washer Use & Care Guide64 pg
    Covers this model
MyPros+ Max

Diagnose your Maytag MHWZ400TQ03.

  • Step-by-step diagnostics from the service manual
  • Test values, resistance specs, and wiring references
  • Verified part numbers when replacement is needed
Start diagnosing

$29/month · Cancel anytime · Or $9.95 3-day pass

Error codes (71)

CodeMeaning
F/01EEPROM communication error between the Central Control Unit (CCU) and the…F/02Pump drive errorF/03Main relays errorF/06Motor Control Unit (MCU) internal failure with repeating under/over voltage or…F/07No water detected entering machine or pressure switch trip not detected after 6…F/21Long drainF/22Door lock errorF/24Overflow conditionF/25Door switch errorF/26Door unlock errorF/27Overflow condition (alternate display for same overflow fault as F/24).F/28Serial communication error between the Central Control Unit (CCU) and the Motor…F/29Dispenser system errorF/30Water temperature sensor (NTC) errorF/31MCU failureF/32Pump drive system errorF/34Load detected inside drum during cleaning washer cycle.F/35Drive motor tachometer errorF01EEPROM errorF02Pump drive errorF03Main relays errorF11Motor Control Unit has internal failure; repeating under or over voltage, or…F1E1Pump driver fails to activate, one of the main relays is not working properly…F1E2Motor Control Unit (MCU) has internal failureF2Motor Control Unit (MCU) has an internal failure; if failure occurs during…F20No water detected entering machine or pressure switch trip not detectedF21Long drainF22Door lock errorF23Heater failureF24Water temperature sensor error
View all 71 error codes
F25Drive motor tachometer errorF26Door lock errorF27Water heater errorF28Water temperature sensor (NTC) errorF29Door unlock errorF2E1No water detected entering washer or pressure switch trip not detectedF2E3Long drainF30Motor drive errorF31Door switch errorF32Load detected in drum at start of CLEAN WASHER cycle (detection by weight).F33Dispenser system errorF34Door unlock errorF35Overflow conditionF3E1Heating element errorF3E2Water temperature sensor (NTC) errorF3E3Overflow conditionF40Drain pump connection lost during the drain cycleF42Serial communication errorF5Pump driver fails to activate, one of the main relays is not working properly…F52MCU heatsink overtemperature errorF5E1Door switch errorF5E2Door lock errorF5E3Door unlock errorF5E4Water heating element errorF5E5Door switch errorF5E6Door unlock errorF6E1Serial communication errorF6E2MCU failureF7E1Motor speed sensing errorF7E2Serial communication errorF7E5Serial communication errorF7E6MCU failureF7E7Drain pump connection lost during cycle drain.F8No water detected entering machine or pressure switch trip not detected…F8E1Overflow conditionF8E2Drain pump connection lost during cycle drain.F8E3Load detected in drum at start of CLEAN WASHER cycle (detected by weight).F9E1Long drainF9E2Drain pump connection lost during cycle drain.rLLoad detected inside drum during cleaning washer cycle (alternate display).SdSuds lock

Service modes (12)

  • Automated Diagnostic Test["Enter Service History Mode & Diagnostic Test first.","Momentary press of the 2nd key to activate…
  • Clear Error Codes["Enter Service History Mode & Diagnostic Test first.","Press and hold the 3rd key for 5 seconds."]
  • Error Code Display/Navigation["Enter Service History Mode & Diagnostic Test first.","Momentary press of the 3rd key to display…
  • Error Code Navigation["Enter Service History Mode & Diagnostic Test first.","Momentary press of the 3rd key to display…
  • Manual Diagnostic Test["Ensure washer is empty and control is in the OFF state.","Close the door.","Select any one key…
  • Quick Diagnostic Test (Bypass Service History)["Ensure drum is empty.","Close the door.","Push POWER.","Select the CLEAN WASHER cycle.","Press…
  • Quick Diagnostic Test (bypasses error history)1
  • Quick Entry Diagnostic Test (bypasses error history)["Ensure washer drum is empty.","Close the door.","Press POWER.","Select the CLEAN WASHER…
  • Quick Entry Diagnostic Test (bypassing Service History)1
  • Service History Mode & Diagnostic Test["Ensure washer is empty and control is in the OFF state.","Close the door.","Select any one key…
  • Service History Mode & Diagnostic Test (Universal Entry)["Ensure washer is empty and control is in OFF state.","Close the door.","Select any one key…
  • User Interface Test["Enter Service History Mode & Diagnostic Test first.","Momentary press of the 1st key to activate…

Full entry steps, exit procedures, and test sequences are available in Max.

Related Maytag washer models

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass