No, your original return and the amended return are two separate returns. The amended return only takes into account any changes from the original return, so if the Federal refund is $0 on the amended return that just means that you will not get any additional refund due to the amendment (and you don't owe anything either).
Your originally filed return should still be processed as it was filed.
To learn more about the status of your original refund, see the following TurboTax help article:
When will I get my federal tax refund?
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