FOR AC Computer Motherboard PCB05-404-V02 — 1553856,B / 1822629.B.P1

Replacement computer motherboard for air conditioning systems, model PCB05-404-V02. This board corresponds to part numbers 1553856,B and 1822629.B.P1 and serves as the main control PCB for compatible HVAC units. Use it as a direct swap when the original control board fails—confirm fitment by matching the model and part numbers. Sold as the motherboard only; inspect connectors and mounting points to ensure compatibility before installation.