FixVault
Home › Cadillac › 1973 › Eldorado Not Available, Automatic Trans › Repair and Diagnosis › Heating, Ventilation & A/C (HVAC) › HVAC Control Systems › Automatic Temperature Control › System Response

System Response

  BLOWER SPEED AIR INLET DOOR POSITION TEMPERATURE DOOR POSITION MODE DOORS POSITION DEFROSTER DOOR POSITION COMPRESSOR HTR-WATER SHUT-OFF VALVE IS BLOWER DELAYED FOR ENGINE WATER WARMUP?
CONTROL LEVER SETTINGS OFF FIXED LOW 5.0V - HTR 4.5V - A/C OUTSIDE AIR VARIES - RESPONSIVE TO SENSORS FORCED TO HEATER SEALED DOESN'T OPERATE USUALLY OPEN - EXC. CLOSED AT MAX. A/C YES(1)
VENT FORCED TO MAX. A/C FORCED TO A/C DOOR WILL ASSUME "BLEED" POSITION AFTER 45 SECOND DELAY AND WILL DELIVER BLEED AIR TO W/S IF IN HEATER OR BI-LEVEL MODE CLOSED NO - BLOWER IS TURNED ON BY O'RIDE SW.
LO VARIES - RESPONSIVE TO SENSORS EITHER HEATER, BI-LEVEL OR A/C DEPENDS ON PROGRAMMER POSITION OPERATES ABOVE APPROX. 32° USUALLY OPEN - EXC. CLOSED AT MAX. A/C POSITION OF PROGRAMMER YES(1)
AUTO. VARIABLE BLOWER PROGRAM
HI FIXED HI - 13.5 V RECIRCULATE AIR WHEN PROGRAMMER IS AT MAX. A/C - OTHERWISE OUTSIDE AIR
BI-LEVEL VARIABLE BLOWER PROGRAM BI-LEVEL OPEN
DEF FIXED HI - 13.5 V FORCED TO HEATER FULL OPEN TO W/S NO - BLOWER IS TURNED ON BY O'RIDE SW.
(1) EXCEPT WHEN CAR INTERIOR IS WARM, IN WHICH CASE A SWITCH ON THE CONTROL HEAD TURNS BLOWER ON IMMEDIATELY, EVEN IF ENGINE IS COLD.
About FixVault