If I put the AC/Heat/Vent source switch to Vent mode, the blower motor blows air as expected - the blower speed switch controls the blower in all speeds. The blower motor also works in Heat mode. Pull blower speed switch (speed switch is a push/pull switch, as are the other controls in the immediate area) to Off, turn source switch to A/C (either Normal or Recirc), then push on blower speed switch to speed 1, 2, 3, or 4 ... I can hear and see the compressor kick on, but the blower motor does not turn on Any ideas?