Aqualung i750tc gas selection problem

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Heathb09

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Location
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Hey everyone

I’m just having some problems with changing the gas to air on my i750tc. Under the “Set Gas” screen next to Gas 1, I cycle through the options and it jumps from 100% to 21% which is skipping the “air” option which should be between the two.

Has anyone had this issue before? What should I do to fix it?
 
It says this on page 29 of the manual

"
NOTE: Once any Gas is set for Nitrox, any other Gas set for AIR will automatically be set to 21%. The
AIR option will not be displayed as an FO2setting until 24 hours elapse after the last dive"

Perhaps this is the "issue". It sounds like the fix is don't set it to anything else for 24 hours.
 
https://www.shearwater.com/products/perdix-ai/

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