1997 Mercury Grand Marquis Owner Guide 1st Printing - Page 72

To change the temperature in the display window, select any temperature between 65˚F (18˚C) and 85˚F (29˚C) using the BLUE (cooler) or RED (warmer) buttons. The Electronic Automatic Temperature Control will do the rest. If you want continuous maximum cooling, push the BLUE button until 60˚F (16˚C) is shown in the display window. Your EATC will cool at maximum and disregard the 60˚F (16˚C) setting until you select a warmer temperature with the RED button. If you want continuous maximum heating, push the RED button until 90˚F (32˚C) is shown in the display window. Your EATC will provide maximum heat regardless of the 90˚F (32˚C) setting until you select a cooler temperature with the BLUE button. The display window tells you how the system is operating. It will indicate the selected temperature and the operating function you have chosen; AUTO or one of the six manual overrides. It will also indicate manual (thumbwheel) control of the fan speed with the H symbol. The display window with all possible displays and their positions are shown here. Normally not all are shown at the same time but are included here to familiarize you with the names and symbols. 71