Attack Intermittent Electrical / Control Fault

Boiler frequently locks out and requires manual reset, with varying error codes or sometimes none.

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

Loose multi‑pin connectors on Attack PCB, Intermittent fan or pump motor, Fluctuating mains voltage, Moisture or condensation inside boiler casing

Safety: Turn off power before reseating connectors.

Steps:

Check environment: Ensure the boiler room is dry and well ventilated. Address any condensation issues.
Reseat connectors: Carefully unplug and replug major connectors on the PCB, fan, pump, and sensors.
Monitor supply: If possible, have an electrician check for voltage stability at the boiler supply.

Technician: Persistent intermittent faults require systematic testing by an experienced Attack service engineer.

Hard 4/5

Main Control PCB

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