E18
Hoover
Power Supply Voltage Fluctuation Detected
Microwave shows E18 and may emit a continuous beep; clock and settings may reset unexpectedly.
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
Unstable mains supply, Loose power cord connection inside unit, Faulty noise filter / power entry board, Failing low-voltage regulator on control PCB
How to Fix / Troubleshooting
Safety first: Disconnect the microwave from power.
User-level checks:
- Plug the microwave directly into a dedicated wall outlet (no extension leads or multi-way adaptors).
- If other appliances on the same circuit flicker or reset, have an electrician check the household wiring.
- After stabilizing the supply, unplug the microwave for 10 minutes, then reconnect and test.
Technician-level checks:
- Inspect the power cord strain relief and internal connections for looseness or overheating.
- Test the noise filter / power entry board for correct operation and continuity.
- Measure the low-voltage outputs from the control PCB regulator circuits under load.
- Replace the noise filter board or control PCB if defective.
Recommendation: Persistent E18 despite a stable mains supply indicates internal power circuitry issues requiring professional service.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Noise Filter Board
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements