The installation history is relevant because the supply or waste arrangement may have changed. It is a clue, not a remote diagnosis or proof that the appliance is fault-free.
Understanding this situation
Record what changed and whether the problem is filling, draining, leakage or a warning. Do not pull the dishwasher out or disconnect plumbing to test the theory.
A useful next step
Contact the appropriate installer or service provider with the full model and timeline. Leave it unused if unsafe. A clear account of the recent work can prevent the enquiry starting with an unsupported assumption about an internal part.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.