E06
Elecro Supply Voltage Out of Range / Phase Error

Heater shows E06 and will not heat; may occur after a power surge or storm.

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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

Incorrect supply voltage (e.g., wired for 400V 3-phase but supplied 230V single-phase), Missing phase on three-phase Elecro heater, Loose supply terminals in heater terminal block, Utility voltage fluctuation or brownout

How to Fix / Troubleshooting

Safety first: This involves mains wiring. Only a qualified electrician should perform live voltage checks or re-termination.

  • Verify supply configuration: Check the rating plate on the Elecro heater for required voltage and phase (e.g., 230V 1~ or 400V 3~). Confirm the supply from the distribution board matches.
  • Inspect terminal block: With power isolated, remove the cover and inspect the main terminal block. Tighten all phase and earth connections and look for heat damage.
  • Measure voltage: Have an electrician measure line-to-line and line-to-neutral voltages at the heater while under load. Compare to Elecro’s acceptable range.
  • Check for missing phase: On three-phase models, ensure all three phases are present and fuses or breakers are intact.

Correct any wiring errors or supply issues. If E06 remains with correct voltage, the control PCB’s voltage sensing circuit may be faulty.

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Repair Difficulty

Professional Required 5/5

Required Part

Elecro Main Terminal Block / Supply Wiring (and possibly Control PCB)
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