Air Conditioner, Cooler and Heater 4 5 Y W-B W-B P-B BR-W B-W L-Y B-Y BR-Y Y-B W-L W-L Y-R P-Y W-R LG G-Y V V O R-B R-R V-W BR M R-B LG-B P 20°C 40°C WATER TEMP. S/W W-B RELAY BOX RECIRC/FRESH CONTROL SERVO MOTOR W-B 1 7 W-B W-B