Good evening all this will be my maiden post so i hope it works ok, Car is R reg V70 20valve 2.5lt estate,heater dosent seem to be very powerfull when in screen clearing mode,it does blow but not as powerfull as i think it should.It seems to work ok and powerfully when in all other modes. Does it work on the gate system? I might add its the fully auto system,with air con.Can anyone point me in the right direction,you,r help would be much appreciated.