So a control system issue… Dumb question, but have you tried removing power completely from it? Try to get it to reset. (Is where I’d start at least)

If that doesn’t work, then it’s essentially just replace the control board, as the program memory is likely corrupt.

After reading other comments it seems what you’re really needing is a diagnostic guide instead of a repair manual. There aren’t many things that have diagnostic guides, as those doing repairs are expected to know how to diagnose.

The simple breakdown of diagnosis is: what is it not doing that it should? How would that logically happen? Go to that point and test. For example, the drum never spins when it should. The drum is spun by a belt, is the belt broken? Fix it. Not broken belt? What moves the belt? A motor, test the motor. Is it getting power as it should? Yes, bad motor. No, what feeds the power to the motor… and on and on until you find the problem.

Except for the one with Europe. It’s semi-continent in-continent

As far as heating efficiency goes, servers aren’t really that good. 100% efficiency as all the electricity they use ends up as heat. Compare with heat pumps that can get 300+% efficiency.

What I do is have my server in the same “room” as my water heater (share airspace), and use a heat pump electric water heater.

At least then all the heat my server makes is used for something good, instead of extra AC usage in summer (winter is a wash, as I need the heat in the house anyways)

$10 says it was recessed before op cut the base off, making it impossible without damage to slot the screw with a Dremel.