📡Microwave

MECH-INTERLOCK

Hotpoint · RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking

Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking MECH-INTERLOCK Error Fix: Door Interlock Switch Failure — Blows Fuse

The microwave blows its internal line fuse every time the door is opened or closed — a door interlock switch (micro-switch) has failed in the wrong position, creating a short circuit across the power line that blows the fuse; there are typically 3 interlock switches (primary, secondary, and monitor/safety) in the door assembly; when the monitor switch fails, it specifically creates a dead short to blow the fuse as a safety measure to prevent the microwave from operating with the door open; all three switches should be inspected and failed switches must be replaced with EXACT OEM part numbers — the switches are wired in a specific sequence and substituting incorrect switches is a fire and radiation safety hazard

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error MECH-INTERLOCK on the Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking means: Door Interlock Switch Failure — Blows Fuse. The top-ranked community fix is “Replace Faulty Door Interlock Switches” (hard difficulty, ~75 min, DIY cost: $15-$25). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · microwave

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many microwave repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $220-$350.

Other Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking Error Codes

Oven Cavity Thermistor Open Circuit

2 fixes

Oven Cavity Thermistor Shorted

2 fixes

Shorted Touch Pad — Stuck Key Detected

2 fixes

Humidity Sensor Open Circuit

2 fixes

MECH-ARCING

Sparking or Arcing Inside Cavity

2 fixes

MECH-FAN

Exhaust Fan Not Working or Always Running on High

2 fixes

MECH-LATCH

Door Latch Assembly Broken — Door Won't Close

2 fixes

MECH-LIGHT

Interior Light or Range Light Not Working

2 fixes

People Also Ask About Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking Error MECH-INTERLOCK

What does error code MECH-INTERLOCK mean on a Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking?

Error code MECH-INTERLOCK on the Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking means: Door Interlock Switch Failure — Blows Fuse. The microwave blows its internal line fuse every time the door is opened or closed — a door interlock switch (micro-switch) has failed in the wrong position, creating a short circuit across the power line that blows the fuse; there are typically 3 interlock switches (primary, secondary, and monitor/safety) in the door assembly; when the monitor switch fails, it specifically creates a dead short to blow the fuse as a safety measure to prevent the microwave from operating with the door open; all three switches should be inspected and failed switches must be replaced with EXACT OEM part numbers — the switches are wired in a specific sequence and substituting incorrect switches is a fire and radiation safety hazard

How do I fix error code MECH-INTERLOCK on my Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking?

The most successful fix is "Replace Faulty Door Interlock Switches" (hard difficulty, ~75 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

Is error code MECH-INTERLOCK on a Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking error MECH-INTERLOCK myself?

Yes — the top-ranked community fix ("Replace Faulty Door Interlock Switches") is rated hard difficulty and takes about 75 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Needle-nose pliers.

How much does it cost to repair Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking error MECH-INTERLOCK?

DIY cost: $15-$25. Professional repair typically costs $220-$350. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking have?

The Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking has 8 other known error codes, including: F1 (Oven Cavity Thermistor Open Circuit), F2 (Oven Cavity Thermistor Shorted), F3 (Shorted Touch Pad — Stuck Key Detected), F4 (Humidity Sensor Open Circuit), MECH-ARCING (Sparking or Arcing Inside Cavity), and 3 more.

What other error codes does the Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking have?

The Hotpoint RVM5160DHWW 1.6 cu ft Over-the-Range Microwave with 1000 Watts and Sensor Cooking has 8 other known error codes:

F1 — Oven Cavity Thermistor Open Circuit (2 fixes)
F2 — Oven Cavity Thermistor Shorted (2 fixes)
F3 — Shorted Touch Pad — Stuck Key Detected (2 fixes)
F4 — Humidity Sensor Open Circuit (2 fixes)
MECH-ARCING — Sparking or Arcing Inside Cavity (2 fixes)
MECH-FAN — Exhaust Fan Not Working or Always Running on High (2 fixes)
MECH-LATCH — Door Latch Assembly Broken — Door Won't Close (2 fixes)
MECH-LIGHT — Interior Light or Range Light Not Working (2 fixes)

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