Ducted fan operation on heating when set point reached.


As default, indoor fan motors goes to super low / pulse on heating once set point has been reached.

In some cases, people may complain of a cool draft. 


Ability to stop the fan all together when the indoor unit has reached heating set point. 

Hidden Function setting:  33 to 04 on the wall controller then reset power for 5 minutes.


  • LHTC’s  - Function works on models produced after January 2015
  • LMLC’s - Function works on models produced after January 2015
  • LATU’s  - This function is not available on these models
  • LBTU’s - This function is not available on these models
  • LHTDP’s  - This function is available for this model.