There are many problems with using electricity on Shabbat, and many ways to understand those problems. The issue of using a fridge is especially problematic (as explained in depth by Rav Nissan Kaplan in this shiur), but the issue I find most confusing is that of opening the door.
According to this excellent answer, there are several reasons as to why opening the fridge might be problematic, and as this question implies, the easiest solution is to remove the light fitting in advance.
My question pertains to the fact that removal of the light fitting only appears to enable one to open the door if we pasken like Rav Auerbach, who held that the problem is either one of minhag or of heating the filament. What happens if one were to pasken like the Chazon Ish, who held that the problem is one of boneh?
I don't understand how the fridge mechanism works, but I would think that the prohibition of boneh would still apply even if the light doesn't come on. If the bulb is broken or is not in its fitting, flicking a switch (in this case, opening a door) still causes the circuit to close.
If one were paskening according to the Chazon Ish, would he need remove the circuitry from his fridge every Friday?