Hi sometimes they will get stuck (hung up if the salt is either empty or caked up.
These machines wont always respond this way and will sometimes work for a white without salt etc, its only when the computer on the main board realizes this and halts operations.
I would try re filling the salt with the power turned off at the main.
If that doesn't help, please let me know and I will advise you what else needs to be done to fix your dishwasher.
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