H1
Tower
Overheat Protection Triggered
Microwave shows H1 or HI and stops; may be accompanied by a hot exterior or strong heat from vents.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Blocked ventilation, failed cooling fan motor, faulty overheat thermostat, running at high power for extended periods
How to Fix / Troubleshooting
Safety: Unplug the microwave and allow it to cool fully before further use.
Steps:
- 1. Cooling period: Leave the door open and wait at least 30–60 minutes for internal thermostats to reset.
- 2. Ventilation check: Ensure the Tower microwave has the recommended clearance on all sides. Remove any items blocking vents.
- 3. Clean vents: Use a soft brush or vacuum to remove dust and grease from intake and exhaust vents.
- 4. Usage pattern: Avoid running the microwave continuously at maximum power for long periods. Use rest intervals for heavy cooking.
Advanced:
- With the unit unplugged, remove the cover and verify the cooling fan motor spins freely and is not obstructed.
- Test the overheat thermostat for proper operation and replace if it fails to reset.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Cooling Fan Motor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements