Carrier AC310 - Page 4

ii
T--304 04/08
TABLE OF CONTENTS Continued:
3.4 Operating Instructions BT324 3--2...........................................................
3.4.1 Display 3--2..........................................................................
3.4.2 Interior Temperature Control 3--2........................................................
3.4.3 Ventilation 3--2........................................................................
3.4.4 Reheat (optional) 3--3..................................................................
3.4.5 Temperature Indication 3-- 3.............................................................
3.5 CHANGING BETWEEN 5F (FAHRENHEIT) AND 5C (CELCIUS ) 3--3..........................
TROUBLESHOOTING 4--1.........................................................................
4.1 System Will Not Cool 4--1..............................................................
4.2 System Runs But Has Insufficient Cooling 4--1............................................
4.3 Abnormal Pressures 4--1...............................................................
4.4 Abnormal Noise Or Vibrations 4--1.......................................................
4.5 No Evaporator Air Flow Or Restricted Air Flow 4--2........................................
4.6 Expansion Valve Malfunction 4--2........................................................
4.7 Heating Malfunction 4--2...............................................................
SERVICE 5--1....................................................................................
5.1 MAINTENANCE SCHEDULE 5--1...........................................................
5.2 REMOVING EVAPORATOR COVER 5--1....................................................
5.3 REMOVING CONDENSER COVER 5--1.....................................................
5.4 INST ALLING MANIFOLD GAUGE SET 5--1..................................................
5.4.1 Installing R--134a Manifold Gauge/Hose SET 5--1.........................................
5.5 PUMPI NG THE SYSTEM DOWN OR REMOVING THE REFRIGERANT CHARGE 5--2...........
5.5.1 System Pump Down For Low Side Repair 5--2............................................
5.5.2 Removing Entire System Charge 5--3....................................................
5.6 REFRIGERANT LEAK CHECK 5--3.........................................................
5.7 EVACUATION AND DEHYDRATION 5--3....................................................
5.7.1 General 5--3..........................................................................
5.7.2 Preparation 5--3.......................................................................
5.7.3 Procedure for Evacuation and Dehydrating System 5--3....................................
5.8 ADDING REFRIGERANT TO SYSTEM 5--3..................................................
5.8.1 Checking Refrigerant Charge 5--3.......................................................
5.8.2 Adding Full Charge 5--4................................................................
5.9 CHECKING FOR NONCONDENSIBLES 5--4................................................
5.10 CHECKING AND REPLACING HIGH OR LOWPRESSURE CUTOUT SWITCH 5--4..............
5.10.1 Replacing High Or Low Pressure Switches 5--4...........................................
5.10.2 Checking High Or Low Pressure Switches 5--4............................................
5.11 FILTER-DRIER 5--5.......................................................................
5.11.1 To Check Filter--Drier 5-- 5..............................................................
5.11.2 To Replace Filter--Drier Assembly 5--5...................................................
5.12 SERVICING THE HEAT VALVE 5--5........................................................
5.12.1 Coil Replacement 5--6.................................................................
5.12.2 Internal Part Replacement 5--6..........................................................
5.12.3 Replace Entire Valve 5--6
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