2915
Boiler electr. system fault
Worcester Bosch Greenstar 4000 (from May 2021)
Remedy
The fan keeps running after the post purge.
▶ Reset the appliance.
▶ Create a heat demand to test the boiler's ignition sequence.
▶ Check the voltage to the fan and the continuity of the fan harness.
▶ Check the power modulation on the fan.
▶ PCB may be defective.
This code also applies to: