Worcester Bosch · Boilers
The boiler's internal pump test has failed. This indicates a problem with the pump itself, which circulates water through the heating system.
Click steps to track your progress.
Reset the boiler by pressing the reset button or power cycling at the mains.
Listen for any unusual noises from the pump when the boiler tries to operate.
If the pump test continues to fail, contact a Gas Safe registered engineer to inspect or replace the pump.