E7
Tefal
Heater Circuit Fault / Triac or Relay Failure
E7 error appears when trying to start or during a program; cooker may not heat.
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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 main heater element, Failed heater triac or relay on PCB, Burnt solder joints on power board, Blown thermal fuse in heater circuit
How to Fix / Troubleshooting
Safety first: Unplug the unit. Internal heater circuits carry mains voltage; do not work on live equipment.
- Check basic operation: Confirm that the display and buttons work normally. If only heating fails and E7 appears, the control electronics are detecting a heater fault.
- Inspect for burning smell: Smell around the base vents. A burnt electronics smell suggests a failed triac, relay, or thermal fuse.
- User-level reset: Leave unplugged for 15 minutes, then retry a simple program. If E7 returns immediately, internal components are likely damaged.
- Advanced diagnostics: A technician can open the base, measure heater resistance at the heater terminals, and check continuity through the thermal fuse. They will also inspect the PCB for burnt components.
- Repair: Replace the main heater element, thermal fuse, or power PCB as required. This is not recommended as a DIY repair unless you are qualified.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Heater Element or Power Control PCB
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