Installing a new furnace, and the heat doesn't start.

A2L Lockout code displayed. NOW WHAT??

R-32 Function

This furnace is equipped with a control board that is capable of shutting off the gas heat and turning on the blower fan in case of an R-32 refrigerant leak in the indoor evaporator coil.

If the cooling unit that is paired with this furnace does not utilize R-32 as the refrigerant, the R-32 functionalities in the furnace control board will need to be turned off for the furnace to run properly.

R-32 function on the control board is ON by default.

The R-32 function can be disabled through the furnace control by entering the A2L Function Enabled menu and selecting “no”.

If A2L function is disabled, the furnace control will ignore all A2L functions.

If A2L function is enabled, the control will monitor the R-32 sensor information.

** To enter the A2L Function Enabled menu, press the left or right switch until LED displays “A2E”.

 ** Press the center switch and the LED will display the selected option (yes or no).

  ** Press the left of right switch to select one of the two options and press the middle switch to confirm the option. (Select NO)

PRESS THE CENTER BUTTON TWICE to save and exit.