Pressure regulator knob for cooks essential model 99700

The only thing I can think of for 'LL' is 'Low Liquid'. It may also be 'eLLement' and they can't spell.

Unfortunately 'Cooks Essentials is a QVC trademark. They don't make them, they just buy from China and sell them. This page on the manual for _this_ model (you don't tell yours, 6 QT is a size, and they do lots) tells you about repair and warranty. It sounds like you have an element gone and the error is telling you in Chinese.

https://www.manualslib.com/manual/596837/Cook-S-Essentials-Cepc800.html?page=40

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Free manual online from QVC:

https://www.qvc.com/footers/cd/pdf/K44020_OwnersManual.pdf

https://www.scribd.com/doc/44820750/Cooks-Essentials-99700-Pressure-Cooker-Manual&ved=0ahUKEwifroiB9bjTAhUk6oMKHflmDPUQFggaMAA&usg=AFQjCNFFJ7zNR0Bjxzxs1mWbZHOZ8RT11w&sig2=o9_T-5eO4ZO90pV6EDb_nA

I have a Tricity TSC09 6 litre Slow Cooker and I just love it its so handy, if your gone for even 10 hours it keeps your dinner warm after the cooking time runs out. I smashed the lid and was so gutted I tried for hours online to find a replacement lid with no luck. I went shopping and bought a very cheap 6 to 7 Quart or 6 to 6.5 litre Slow cooker / Crock pot of the same shape the removable pot and lid fit. I bought a cookworks, signature, 24 euro 6.5 litre oval dog standard slow cooker and the lid fit, now I also have a removable pot replacement as well just in case I smash that too. So happy I have my Slow cooker back again.

Here all of the Cook's Essentials Manuals - click on the one that looks the most like your pressure cooker:
http://www.hippressurecooking.com/category/manuals/cooks-essentials/

Does anyone know if a replacement lid is available for this unit

usually the grip knob on top can be turned for preassure adj..

You can join the yahoo group: PressureCookerRecipes and they have a file that shows step by step how to change the fuse for this pressure cooker. Hope this helps.