This does sound like it could be a LED incompatibility issue and swapping out the MACL-153M could resolve the issue. Do you by chance have the model...
Swapping out the PJ2-2B to something like that PJ2-3BRL which supports dimming, may not change anything for you. If the module up in the ceiling is a...
The remote is the PJ2-2B. There is no other switch associated with this light. He pulled power from an unused spotlight outside, ran it over the roof...