On the Subject of Thermoregulation

The fan is broken, and you are our finest electrical engineer...
but YOU press buttons for a living, not soldering!

On the module is a fan, a temperature display, a LED, and three colored buttons. The temperature will continuously rise while the fan is off. Press the buttons in a specific sequence to repair and restart the fan.

Overheating

• The bomb will always start at 75°F.
• The bomb will overheat if the temperature hits 250°F, and the module will issue 99 strikes.
• The defuser has 50% of the bomb's total time to fix the fan before overheating.
• If the bomb has a total time of 9 minutes or less, overheating will not occur, and the module will remain at 75°F.

Fan

The fan is pressable. Do NOT press the fan button until you have entered the correct button sequence. Pressing the fan prematurely will cause the fan to ramp up uncontrollably, resulting in a strike.

Calculating Sequence Number

To solve the module, you need to calculate the sequence of buttons to press to fix the fan. Start making a number with the following:-

• Multiply the number of batteries by the number of indicators.
• Multiply the number of modules by the number of ports.
• Add these two, this is A.
• Add the sum of all digits in the serial number, this is B.
• Add a value based on the color of the LED on the module, this is C.
  • Green = 0
  • Amber = 1
  • Purple = 2
• Add A+B+C.
• Modulo this result by 10. Continue to next page.

Converting to Button Sequence

Using the previous number you got, do these calculations for each button press:-
(round down in all division)

• First button: sequence number mod 3
• Second button: sequence number / 3 mod 3
• Third button: sequence number / 9 mod 3

Using the numbers after the calculations, attach them to a button:-
0 = Red, 1 = Yellow, 2 = Blue

Solve the module by pressing the three buttons in sequence, then finally pressing the fan.