WR Furnace Control Board Fits Trane American Standard CNT03797 CNT3797 156-7457A
This is an Upgraded White Rodgers Furance Control Board designed for Trane/American Standard Furnaces. It repalces the part #s listed below. The new board comes with instructions although installation is intuitive. **The board will not replace Lennox control boards **
Function:
The control board is the "brain" of your unit, coordinating and executing the operation of other various components by sending voltage when and where needed. A control board is constantly monitoring sensors and safety switches in the unit.