This bulletin announces availability of new heater control panels assemblies with revised operating
logic. Previously, when A/C cut-off control was activated (e.g. under full acceleration), the air
inlet mode would be switched from inside (recirculation) to “fresh†and allow outside (fresh) air to
enter the cabin. This is considered normal and intended operation, consistent with the design of the
system. However, in the interest of customer satisfaction, these new control panels retain the selected
air inlet mode regardless of a/c cut-off control status (off or on).
