E18
Hisense
Secondary Cavity / Zone Heating Fault
E18 error, oven cannot detect or control one of the heating zones in a combi or dual-cavity Hisense oven.
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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 secondary cavity element, Faulty zone temperature sensor, Wiring fault between secondary cavity and main board, Defective zone control relay
How to Fix / Troubleshooting
Safety first: Disconnect power and allow all cavities to cool.
- Identify affected zone: Determine which cavity or function triggers E18 (e.g., top oven, bottom oven, or specific mode).
- Check that cavity’s element: Test the relevant element for continuity and visible damage. Replace if open or cracked.
- Sensor test: If the secondary cavity has its own sensor, test its resistance and replace if out of range.
- Wiring inspection: Trace wiring from the secondary cavity to the main control board. Repair any breaks or heat damage.
- Control board: If components test good, the zone control relay or circuitry on the board may be faulty and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Secondary Cavity Heating Element
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