it integrates seamlessly with the existing SureLight ignition control board

providing a drop-in solution for technicians maintaining Carrier

continuous pilot and main burner operation

Can the internal valve stem be serviced or replaced

protecting the compressor and thermal expansion valve from premature failure caused by internal system contamination

Heat Controller 17120300A00318 Board Assembly 320074-702 it integrates seamlessly with theThe Heat Controller 17120300A00318 Board Assembly is a high precision Main Control Board Assembly engineered for Ductless Mini Split systems and compatible Midea HVAC units. As a direct fit replacement, this printed circuit board (PCB) manages critical HVAC system regulation, including compressor cycling, fan speed modulation, and communication between indoor and outdoor units. Operating as the "brain" of the residential air conditioning system, it