Your boiler is briefly cooling itself down after providing hot water and will resume normal operation in a few moments.

Fan and water pump running

What causes this fault?

This status occurs because your boiler needs to dissipate excess heat after you finish using hot water. The pump and fan continue to run for a short period to move heat away from the internal components and prevent any damage from overheating. Once the internal temperature has dropped to a safe level, the boiler will automatically return to its normal standby mode.