Igniter
Replaces WB13K10026
If the oven won't light, a weak igniter is the most common cause.
Temperature sensor
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Door seal
Leaks, a torn edge or a door that won't seal mean it's time for a new one.
Control board
A dead display or random faults can come from the control board.
Burner igniter
Replaces WB13K10020
If the oven won't light, a weak igniter is the most common cause.
40a15bulb
Replaces STD372401
The light bulb this model takes.
Surface burner orifice
Burners, caps and grates wear and crack with heat.
Surface burner cap
Burners, caps and grates wear and crack with heat.
1IgniterWB13K21
2SensorWB20K10027
3Door sealWB04K10021
4Control boardWB27K10338Part numbers come from the Sears PartsDirect parts list for the Hotpoint RGB790DET2BB (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.
Where the model number is
Open the oven door or pull out the storage drawer: the plate is on the frame. Some models: behind the kick panel.