@lydawallis an illuminated “88” showing in the “Estimated Time Remaining” display would indicate that you have entered the test mode successfully. See if this "Press the Pause/Cancel button to exit diagnostics" gets your dryer to display something different. I suggest that you download the tech sheet from [document|1349|here] and see what your diagnostics tell you.
@lydawallis an illuminated “88” showing in the “Estimated Time Remaining” display would indicate that you have entered the test mode successfully. See if this "Press the Pause/Cancel button to exit diagnostics" gets your dryer to display something different. I suggest that you download the tech sheet from [document|1349|here] and see what your diagnostics tell you.