E17
Attack Configuration / Parameter Error

Boiler shows E17; may be related to incorrect parameter settings or communication error.

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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 installer settings in Attack control menu, Corrupted EEPROM on PCB, Incompatible control panel or remote controller, Wiring fault on communication bus

How to Fix / Troubleshooting

Safety: Only qualified personnel should change installer parameters.

Steps:

  • Power cycle: Turn off power for 30 seconds, then restore and see if E17 clears.
  • Check external controls: Disconnect any external room thermostats or OpenTherm controllers temporarily to see if the error disappears.
  • Factory reset (if available): Some Attack models allow a factory reset of parameters via the installer menu. Refer to the manual.

Technician: If E17 persists, the PCB may need reprogramming or replacement by an Attack service center.

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Repair Difficulty

Hard 4/5

Required Part

Control Panel / PCB EEPROM
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