We have a couple of split air conditioners. One of them is reasonably old (1987 model) and when we bought the place it came without a remote. We will eventually have to redo the roof and will replace all ACs with more modern and hopefully higher efficiency models. Until then, however, I was hoping to build a remote for this unit – and yes, we have tried just about every existing universal remote model, which turn out not to be so “universal.” This is the outside of the unitAnd here is the par...

We have a couple of split air conditioners. One of them is reasonably old (1987 model) and when we bought the place it came without a remote. We will eventually have to redo the roof and will replace all ACs with more modern and hopefully higher efficiency models. Until then, however, I was hoping to build a remote for this unit – and yes, we have tried just about every existing universal remote model, which turn out not to be so “universal.” This is the outside of the unitAnd here is the par...