What does the Ariston PUMP PROTECTION ACTIVATED fault code mean?

Your boiler has detected that the water pump is not running correctly, so it has safely shut itself down to prevent damage to the system.

How much does it cost to fix Ariston error code PUMP PROTECTION ACTIVATED?

Typical repair cost for the Ariston PUMP PROTECTION ACTIVATED fault is £150-350 including labour.

Check/replace different pressure switch for pump, check wiring, check/replace P.C.B. wire, power supply PCB or control PCB.

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Six most common causes of dropping pressure.

Each noise points to a different fault.

Safety-critical — turn off, read this.