I'm not sure I understand what you mean. If it will blow heat or AC, what is wrong?

Answered by Jacobandnickolas (expert)
57,318 answers provided

If you select hot it should blow heat and if selected AC it should blow cold
fan should have no effect on the air temp that blows
if have a problem not hot enough check thermostat and or blend door actuator

Answered by BMRFIXIT (expert)
19,736 answers provided