I cant say for sure but it looks like you have quite a few error codes.
https://github.com/Canaan-Creative/avalon7-docs/wiki/AvalonMiner-error-codeThat's the link to Error codes, found in the ECHU and ECMM. The codes are additive.
I think you have the 128, 64, 4, and 1. would show as you (197)
I don't have an 841 so I can't say for sure if these are their codes, I'm also not at home so I can't confirm but your VO (voltage out looks out of wack as well), this could mean something like a bad PMU.
The number 4 code is no fan detected so that might be the issue. You might want to post a link asking for help in this thread.
https://bitcointalk.org/index.php?topic=3224256.0Haggs the OP recently received some training from Canaan.