Before you call Dtf Group to book a technician to attend your premises here are some basic items to check

1.if there is no airflow from indoor vents check your return air filter is not blocked with dirt ,if it is just reqiures cleaning . coooling or heating,check your outdoor fan motors and compressor motor are operating . power to airconditioner check meter box fuse not blown or tripped.

If you have any of these faults and done check list you reqiurea booking for a Dtf Group technician to attend the premise to rectify fault