E6
Drazice Communication / Control Board Internal Error

Control panel of Drazice heater shows E6; unit may lock out and 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

Faulty main control PCB, corrupted firmware, power surge damage, loose low-voltage harness between display board and main board

How to Fix / Troubleshooting

Safety: Disconnect mains power before opening the control compartment.

Basic checks:

  • Remove the front cover to access the control electronics.
  • Inspect the low-voltage harness between the user interface/display board and the main control board. Ensure all plugs are fully seated and not oxidized.
  • Look for visible damage on the PCB: burnt components, swollen capacitors, or darkened areas.
  • With power OFF, disconnect and reconnect all low-voltage connectors to clean contacts.
  • Restore power and perform a power-cycle reset (switch OFF/ON at the main switch or breaker).

If E6 persists and there is no visible wiring issue, the main control board is likely defective and should be replaced with an original Drazice board. This repair is best performed by an authorized service technician to ensure correct configuration and safety testing.

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Repair Difficulty

Professional Required 5/5

Required Part

Main Control PCB
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