In this video, I show you how to access the hidden diagnostic mode on a Speed Queen Washer to run various tests to ensure the washing machine works. In addition, I show you from the service manual, what the various flashing light error codes could mean, and possible remedies for them as per Speed Queen. This video focuses on the Speed Queen TC5003 interace system, which also applies to the TL3003, TR3003, and TR5003 washing systems. Some codes may or may not apply to your washer - I tried to include all info I could during the video. I hope this helps you! Introduction: 00:00 How to Enter Diagnostics: 00:26 Diagnostic Test Zero: 01:30 Diagnostic Test One thru Fourteen: 01:46 Speed Queen Error Codes: 07:59 Tools I use in all videos can be found at my Amazon Idea Page: https://www.amazon.com/shop/bensappli... Did this video help you out? Send me a tip, and help me make more Appliance Repair videos for people to watch for free! PayPal: https://paypal.me/BensappliancesYT?lo... CashApp: $BenjaminSchlichter Affiliate Disclosure Form: http://bit.ly/3oXeu3B?utm_source=yt-G... ** Links to external websites and parts may result in me receiving a commission on sales.