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Modern Maid
Electric Range

Model # QDU-878B Official Modern Maid electric range

Here are the diagrams and repair parts for Official Modern Maid QDU-878B electric range, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 169 parts  |
Insulator, Switch 72-03-100
#12

Door latch assembly (qdu-838) (qdu-858) (qdu-878) diagram

Insulator, switch

Part #72-03-100

The manufacturer no longer makes this part, and there's no substitute part

Clock Knob 77-06-092
Clock knob

Part #77-06-092

The manufacturer no longer makes this part, and there's no substitute part

Hot Wire Relay 74-03-081
#1

High voltage section (qdu-838) (qdu-858) (qdu-878) diagram

Hot wire relay

Part #74-03-081

The manufacturer no longer makes this part, and there's no substitute part

Door Glass Retainer 44-01-668
#24

Oven door assembly (qdu-838) (qdu-858) (qdu-878) diagram

Door glass retainer

Part #44-01-668

The manufacturer no longer makes this part, and there's no substitute part

Cabinet Back 16-09-094
#4

Cabinet section (qdu-838) (qdu-858) (qdu-878) diagram

Cabinet back

Part #16-09-094

The manufacturer no longer makes this part, and there's no substitute part

Door Spring 78-03-018
#19

Cabinet section (qdu-838) (qdu-858) (qdu-878) diagram

Door spring

Part #78-03-018

The manufacturer no longer makes this part, and there's no substitute part

Door Trim 77-04-352
#2

Oven door assembly (qdu-838) (qdu-858) (qdu-878) diagram

Door trim

Part #77-04-352

The manufacturer no longer makes this part, and there's no substitute part

Terminal Shield 44-01-702
#13

Door latch assembly (qdu-838) (qdu-858) (qdu-878) diagram

Terminal shield

Part #44-01-702

The manufacturer no longer makes this part, and there's no substitute part

Door Panel - Coffee 12-01-141
#3B

Oven door assembly (qdu-838) (qdu-858) (qdu-878) diagram

Door panel - coffee

Part #12-01-141

The manufacturer no longer makes this part, and there's no substitute part

Insert, Small Burner Bowl With Hole 36-01-034
#5D

Range top section (qdu-858) diagram

Insert, small burner bowl with hole

Part #36-01-034

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your ranges

Choose a symptom to see related range repairs.

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Why can't I unlock my range's oven door?

Main causes: broken oven door lock assembly, wiring failure, electronic control board problem…

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Why won't my range's oven bake?

Main causes: bad bake element, broken burner igniter, control system failure, blown thermal fuse, faulty temperature sen…

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How do I get rid of streaks on my range's oven window?

Main causes: food splatters, spilling food on the oven door, allowing liquid to drip through oven door vent when cleanin…

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Why is my range's oven temperature wrong?

Main causes: faulty temperature sensor, electronic control board problem, control thermostat failure, weak burner ignite…

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Why doesn't my range's oven broiler work?

Main causes: broken broiler element, weak or broken broil burner igniter, control system failure, faulty temperature sen…

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Why won't my range's oven heat?

Main causes: power supply problem, control thermostat or electronic control board failure, broken element, bad burner ig…

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Why isn't my range working?

Main causes: power supply failure, blown thermal fuse, bad relay control board, damaged terminal block, wiring failure…

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Most common repair guides to help fix your ranges

These step-by-step repair guides will help you safely fix what’s broken on your range.

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How to replace a range oven door switch

How to replace a range oven door switch

The oven door switch detects whether the oven door is closed and helps control the oven light. Replace the switch if it …

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Repair difficulty
Time required
 30 minutes or less
How to replace a range oven door lock assembly

How to replace a range oven door lock assembly

Oven door not locking? You can replace the lock assembly in less than 30 minutes. Here's how.…

Read more
Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your ranges

Use the advice and tips in these articles and videos to get the most out of your range.

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How to clean and maintain your stove

Learn how to clean and maintain your stove to keep it in top shape.…

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

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