The middle spray arm is blocked by crockery.
Open the dishwasher door and rearrange the items that are blocking the spray arm.
The Spray arm indicator light on the dishwasher is flashing.
Open the dishwasher door and rearrange the items that are blocking the spray arm.
Switch the dishwasher off.
Remove the spray arm as follows:
Push the middle spray arm upwards to engage the ratchet (1).
Unscrew the spray arm (2).
Use a pointed object to push food particles that are stuck in the spray arm nozzles into the spray arm.
Rinse the spray arm thoroughly under running water.
Refit the spray arm. Check to ensure the spray arm can be rotated freely.