Display shows E14; unit may not power on or may shut off randomly
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.
Possible Causes
How to Fix / Troubleshooting
Critical safety warning: This involves mains voltage. Turn OFF the breaker and verify no voltage is present before opening the unit. If you are not trained in electrical work, call a professional.
Steps:
- 1. Check supply voltage: With the breaker ON and cover in place, measure voltage at the service panel to ensure it matches the heater's rating. Then turn OFF the breaker before opening the heater.
- 2. Inspect power terminals: Remove the cover and check the main power terminal block for loose screws or signs of overheating. Tighten to specified torque.
- 3. Internal fuse: Locate any internal fuses on the PCB or power module. With power OFF, test continuity and replace with identical type and rating if open.
- 4. Visual inspection of PCB: Look for bulging capacitors or burned components in the low-voltage power supply section.
- 5. Test operation: Restore power and check if E14 clears.
Professional help: If the internal power supply is defective, the PCB must be replaced by a qualified technician.
Repair Difficulty
Required Part
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