Ram Trucks 2015 ProMaster Commercial - Owner Manual - Manual (Page 192)

Recirculated air is not allowed in Defrost modes. If the
Recirculation button is pushed while in Defrost mode,
the LED indicator will flash several times then go out.
Recirculation will be disabled automatically when De-
frost mode is selected.
If the following conditions are verified:
• Mode Floor, Vent or Bi level selected.
• Temperature in Max Cold.
• A/C led ON.
• Hot Ambient Temperature.
• Blower at Maximum speed.
• In case of hot ambient temperature, the recirculation is
closed (opened for a minute each 15 minutes so the air
can be changed) to improve the vehicle cooling.
Rear Window Defrosting
Push the Rear Defrost button to activate heated rear
window defrosting.
This function switches OFF automatically after about 20
minutes or when the engine is turned OFF. It is not
switched on automatically the next time the engine is
started.
If equipped, push the Rear Defrost button to activate
defrosting of door mirrors and heated nozzles.
NOTE:
Do not affix stickers to the inside of the heated
rear window over the heating filaments, to avoid damage
that might cause them to stop working properly.
190 UNDERSTANDING YOUR INSTRUMENT PANEL