What maintenance is required for the venter housing

Can I use a round capacitor instead of this rectangular MB37150EB

or the unit cycling on high-limit switches

Will this remote work if my IR receiver is faulty

Daikin-McQuay 6019124 Circuit Board 320788-704 What maintenance is required forThe Daikin McQuay 6019124 Circuit Board is a critical OEM replacement component designed for high performance HVAC control systems. This printed circuit board (PCB) serves as the central processing hub for commercial and industrial air conditioning units, facilitating precise sensor signal integration and automated system response. Built to withstand the rigorous demands of continuous mechanical operation, the 6019124 optimizes system efficiency by