E4
Rangemaster
IGBT / Power Transistor Overcurrent or Fault
Induction hob shows E4 on one or more zones and they do 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
Shorted IGBT on power module, shorted induction coil, internal power module failure, wiring short to chassis
How to Fix / Troubleshooting
Safety first: Disconnect the hob from the mains. High voltages and stored energy are present inside.
Steps to check (for qualified persons):
- Visual inspection: Remove the bottom cover and inspect the power module for burnt components or cracked IGBTs.
- Check coil and wiring: Measure resistance of the affected coil and inspect for insulation damage or contact with metal parts.
- Module replacement: If any power components are visibly damaged or E4 persists after wiring checks, replace the entire induction power module with the correct Rangemaster part.
- Do not attempt to bypass safety circuits or operate the hob with suspected short circuits; this is a fire and shock hazard.
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Repair Difficulty
Professional Required
5/5
Required Part
Induction Power Module
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