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Jamie TaylorSep 10, 2025
What does error Er4 mean on Whynter TSO-488GB?
- TThomas WeissSep 12, 2025
If your Whynter Kitchen Appliances displays an 'Er4' error, it indicates a short circuit for the top sensor. Stop the work, open the oven door and allow the cavity to cool down for 10 minutes, and then restart it or contact Whynter Customer Support.