Precision Capacitance: The 40 MFD (microfarad) rating ensures the correct phase angle for motor efficiency

a lower spring plate

Propane Optimized: Specific internal calibration for LP gas systems to ensure accurate low-pressure detection

preventing intermittent ignition failures

Carrier HK38EA040 Control Board 319848-301 Precision Capacitance: The 40 MFDThe Carrier HK38EA040 Control Board (EXMB) functions as the central processing hub for compatible residential and commercial HVAC systems. This OEM replacement circuit board is engineered to manage critical system sequences, including fan speed regulation, burner ignition, and cooling cycle timing. As a factory authorized part, the HK38EA040 ensures high level communication between thermostats and system components, maintaining the exact performance