Model reference

Magic Chef U31FS-7-NK

Name: Magic Chef U31FS-7-NK
Brand: Magic Chef

Range

3 documents22 error codes17 service modes

Available documentation

Service Manual

Service Manual - 821241412 pg
Covers this model

Installation Guide

Installation Instructions5 pg
Covers this model
Instrucciones de instalacion38 pg
Covers this model

MyPros+ Max

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Test values, resistance specs, and wiring references
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M+

M+ Max·Magic Chef Range

: on my Magic Chef U31FS-7-NK

M+

Flashing colon on display indicates a

From Service Manual 735202, p.14:

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 (22)

CodeMeaning

:Flashing colon on display indicates a power failure has occurred.bFIce bin full detected during ice maker harvest test.DoorDoor interlock primary switch error.E1Cannot find ice break position during ice maker harvest test.E2Cannot find end of harvest location during ice maker harvest test.E3Cannot find home position during ice maker harvest test.E4Multiple failures detected during ice maker harvest test.Err1Failed H.V Err2Failed H.V Err3Failed H.V Err4Failed H.V Err5Failed Touch Panel (touch panel pressed for more than 30 seconds triggers this…Err6Failed H.V Err7Error with RTD circuit F2Keyboard (membrane switch) failure.F3HHumidity sensor failure.F3TTemperature sensor failure.F7Power to magnetron interrupted.HOTOven overtemperature condition OPOpen circuit detected on thermistor.PAAll ice maker harvest test steps successfully passed.SHShort circuit detected on thermistor.

Service modes (17)

Convection Temperature Calibration1
Field Service TestSee Technical Sheet located behind Toe Panel for specific entry procedure.
Manual Function TestSee Technical Sheet located behind Toe Panel for specific entry procedure.
Self-Diagnostic Test Mode["Press and hold the OFF/CANCEL button while opening the door.","While still holding the OFF/CANCEL…
Service Diagnostics Mode["Press and hold the Recommended button.","While holding the Recommended button, press and hold the…
Service Mode1
Service Test Mode 0 - Temperature OffsetEnter service mode, then press '0' to display current temperature offset.
Service Test Mode 1 - Rear Element (Heater B)Enter service mode, then press '1' to toggle Element B (Rear) ON/OFF.
Service Test Mode 2 - Front Element (Heater A)Enter service mode, then press '2' to toggle Element A (Front) ON/OFF.
Service Test Mode 3 - MicrowaveEnter service mode, then press '3' to toggle Microwave ON/OFF.
Service Test Mode 4 - Convection FanEnter service mode, then press '4' to toggle Convection Fan ON/OFF.
Service Test Mode 5 - Cooling FanEnter service mode, then press '5' to toggle Cooling Fan ON/OFF.
Service Test Mode 6 - Oven LightEnter service mode, then press '6' to toggle Oven Light ON/OFF.
Service Test Mode 7 - Magnetron HoursEnter service mode, then press '7' to display number of magnetron hours.
Service Test Mode 8 - Door CyclesEnter service mode, then press '8' to display number of door cycles (1 to 1 ratio rounded to the…
Service Test Mode 9 - Clear Hours and CyclesEnter service mode, then press '9', then press START to activate
Service Test TEMP - RTD Temperature DisplayEnter service mode, then press TEMP to display current oven temperature as sensed by RTD.

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

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