Whirlpool Range/Stove/Oven; Microwave; Oven/Microwave Combo Fixed thermostat (THRMST-FIX) W11568584, Replaces W10389447

Genuine Whirlpool OEM fixed thermostat used in select Whirlpool-family microwave, range/stove/oven, and oven/microwave-combination appliances. The part is identified by Whirlpool parts retailers as THRMST-FIX.

Is This the Right Part?

✅ Cross Reference Information

Common Symptoms

• Microwave or oven stops after running for a short time
• Microwave does not heat or heats inconsistently
• Cooling/exhaust fan does not operate when temperature rises
• Overheating or thermal-protection interruption
• Oven heating is insufficient or uneven

Check Before Replacing

• Confirm the appliance model number and verify that W11568584 is specified for that model before testing or replacing the part.
• Disconnect electrical power before accessing the thermostat.
• Visually inspect the thermostat, wiring, and terminals for looseness, discoloration, or heat damage without bypassing or jumping the safety device.
• With power disconnected, a qualified technician may check thermostat continuity according to the appliance-specific service documentation; lack of expected continuity can indicate an open thermostat, but other faults can produce the same symptom.
• For microwave installations, do not access internal components unless qualified, because high-voltage capacitors may retain a dangerous charge even after unplugging.

Pro Tip

Part Details

Key Features

• Genuine Whirlpool OEM component
• Fixed thermostat design identified by Whirlpool as THRMST-FIX
• Used as a temperature-sensitive safety device in select Whirlpool-family microwave, wall-oven, range, and combination appliances
• Designed to interrupt operation when excessive temperature is detected

Installation Notes

• Disconnect power before service and allow the appliance to cool completely.
• Use the appliance-specific service documentation for access, terminal identification, and continuity specifications.
• Do not bypass, modify, or substitute the thermostat with a device of different specifications.
• Microwave or combination-oven internal service should be performed by a qualified technician because of retained high-voltage electrical hazards.
• Verify the replacement part against the appliance model before installation.

Verified Compatible Models

WOC54EC0HB20, WOC54EC0HS00, WOC54EC0HS01, WOC54EC0HS20, WOC54EC0HW20, WOC54EC7AB00, WOC54EC7AB01, WOC54EC7AB02, WOC54EC7AB03, WOC54EC7HB00, WOC54EC7HB01, WOC54EC7HB04, WOC54EC7HB20, WOC54EC7HS20, WOC75EC0HS00

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.