E07
Bush
Cavity Temperature Sensor / Thermistor Fault
Microwave displays E07 and stops mid-cycle; fan may continue running briefly.
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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.
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Possible Causes
Open or shorted cavity thermistor, Loose thermistor connector on PCB, Damaged thermistor wiring harness, Faulty control PCB temperature input
How to Fix / Troubleshooting
Safety: Unplug the microwave before servicing.
- Locate the cavity sensor: On many Bush microwaves, a thermistor or thermostat is mounted on the top or side of the cavity or behind the rear wall.
- Inspect wiring: Check the harness from the sensor to the control board for pinched, burnt, or broken wires. Reseat the connector at both ends.
- Test the sensor: Disconnect the thermistor and measure its resistance at room temperature. Compare with the specification in the Bush service data (commonly in the tens of kΩ). A reading of 0 Ω (short) or infinite (open) indicates a faulty sensor.
- Replace faulty sensor: Remove mounting screws or clips and fit a new cavity temperature sensor of the correct type for your model.
- Control board check: If a known-good sensor still results in E07, the control PCB’s sensor circuit may be defective and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Cavity Temperature Sensor
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