Whirlpool
Electric Range

Model #RM778PXT1 Whirlpool electric range

Here are the repair parts and diagrams for your Whirlpool RM778PXT1 electric range. 

The diagram(s) below can help you find the right part.  If you’d like help, we invite you to call our customer service number at the top of the page, or click chat.

On this page, you can also find any manuals, installation guides and error code tables associated with this model.

For advice on diagnosing problems with appliances, lawn & garden equipment and other products, check out the videos, repair guides and articles in our DIY section.

Save to my profileError Codes

Showing 10 of 237 parts

Appliance Splicing Wire, 25-ft, 14-gauge (Yellow)

#NI

All parts Diagram

$16.20
62% OFFMSRP:$42.43

In Stock

Wire (Red)

#NI

All parts Diagram

Wire (red)

Part #242831
$214.42
31% OFFMSRP:$311.99

In Stock

Spray (White Citrine)

#NI

All parts Diagram

$20.71

In Stock

Microwave Stirrer Fan Drive Belt

#18

Cabinet and stirrer Diagram

Microwave stirrer fan drive belt

Part #WP313646
?
Manufacturer substitution
This part replaces 313646. Substitute parts can look different from the original.
This part replaces 313646
$33.06

Back Order

Holdr-fuse

#11

Magnetron and airflow Diagram

Holdr-fuse

Part #4454949
?
Manufacturer substitution
This part replaces 314121. Substitute parts can look different from the original.
This part replaces 314121
$34.57

In Stock

Handle

#32

Door and latch Diagram

Handle

Part #WP313610
?
Manufacturer substitution
This part replaces 314169. Substitute parts can look different from the original.
This part replaces 314169
$57.36

In Stock

Dishwasher Screw

#31A

Door and latch Diagram

Dishwasher screw

Part #303776
?
Manufacturer substitution
This part replaces 313811. Substitute parts can look different from the original.
This part replaces 313811
This item is not returnable
$6.39

In Stock

Appliance Touch-Up Paint, 0.6-oz (White)

#NI

All parts Diagram

Appliance touch-up paint, 0.6-oz (white)

Part #72017
?
Manufacturer substitution
This part replaces 72017. Substitute parts can look different from the original.
This part replaces 72017
This item is not returnable
$6.17
18% OFFMSRP:$7.50

In Stock

Range Drip Pan

#NI

All parts Diagram

Range drip pan

Part #WB32X106
?
Manufacturer substitution
This part replaces 72107. Substitute parts can look different from the original.
This part replaces 72107
$14.51

In Stock

Microwave Door Interlock Switch

#4

Door and latch Diagram

Microwave door interlock switch

Part #814037
?
Manufacturer substitution
This part replaces 661146. Substitute parts can look different from the original.
This part replaces 661146
$23.95
32% OFFMSRP:$35.00

In Stock

Symptoms common to all ranges

Choose a symptom to see related range repairs.

Main causes: broken oven door lock assembly, wiring failure, electronic control board problem
Main causes: food splatters, spilling food on the oven door, allowing liquid to drip through oven door vent when cleaning the door
Main causes: faulty temperature sensor, electronic control board problem, control thermostat failure, weak burner igniter, oven door problem
Main causes: bad bake element, broken burner igniter, control system failure, blown thermal fuse, faulty temperature sensor, wiring failure
Main causes: power supply failure, blown thermal fuse, bad relay control board, damaged terminal block, wiring failure
Main causes: broken broiler element, weak or broken boil burner igniter, control system failure, faulty temperature sensor, wiring failure
Main causes: power supply problem, control thermostat or electronic control board failure, broken element, bad burner igniter

Repair guides common to all ranges

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

July 20, 2018
By Lyle Weischwill
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 doesn’t control the oven light properly.

Repair difficulty
Time required
 30 minutes or less
February 20, 2015
By Lyle Weischwill
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.

Repair difficulty
Time required
 30 minutes or less

Articles and videos common to all ranges

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

September 22, 2016

Easy party appetizer recipe video

By Sears PartsDirect staff

Make your next get-together a hit with these 3 great-tasting party appetizer recipes.

January 18, 2016

Troubleshooting an F10 error code on a range video

By Sears PartsDirect staff

Learn how to troubleshoot problems with your range that cause an F10 error to be displayed.

December 2, 2015

How to make Irish shortbread toffee bars

By Sears PartsDirect staff

These toffee bars combine caramel and chocolate in layers for an ooey-gooey treat.