Mitsubishi Electric E27676447 Board R-448A This Fenwal ignition board is

This Fenwal ignition board is a common replacement in gas-fired furnaces and boilers where line voltage control and flame rectification are required

utilizing a single-blade counterbalanced gravity design to automatically relieve excess duct static pressure

With a factory-calibrated 150 PSI relief setting and a 210°F temperature limit

protecting the integral water feeder from debris that compromises flow control

Mitsubishi Electric E27676447 Board R-448A This Fenwal ignition board isThe Mitsubishi Electric E27676447 Board is a critical indoor control board designed for high performance climate management in specific PKA A series wall mounted indoor units. This genuine OEM replacement part (which supersedes the E17676447) serves as the primary processing hub, regulating vital 24 VAC communication signals between the thermostat, internal sensors, and the outdoor inverter. Engineered to operate within a precise temperature range of