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Chrysler Airtemp 3000 Series Compressors Motor Terminal Diagrams Across the Line Starting L1 L2 L3 L1 L2 L3 L1 L2 L3 Contactor Contactor Contactor A B A C Six Motor Leads Contactor #1 T'Stat 1 B A T'Stat 2 Terminal Plate Internal Thermostats Contactor #2 A Contactor #1 B C Nine Motor Leads Module Power Control Circuit T1 T2 M1 M2 Therm 1 Therm 2 Therm 3 C L1 L2 L3 Original compressors had a model number suffix of 00. When suffix was changed to 01 or 02 the motor protection was changed from internal thermostats to internal thermistors and an external electronic module was added. All models were changed to six motor leads from nine motor leads. A more compact motor was used on all models. Unloading sequence of 3000 model was changed before model number suffix was changed. Internal Sensors 6 Lead Nine Motor Leads - High Voltage Part Winding Starting Contactor #2 Six Motor Leads C Nine Motor Leads - Low Voltage L1 L2 L3 B Terminal Plate Motor Protector Module Internal Thermistors Terminal Plate Thermistor Control Circuit Diagram With internal thermostat protection connect control circuit to terminals A & B. These terminals should have 100% continuity when checked with an ohmmeter. If either thermostat opens and fails to close check continuity from A to C and B to C. Connect control circuit to pair that has continuity. Internal thermistors should read between 65 and 105 ohms depending on their temperature. Module trip point is 100 ohms. Use a battery operated ohmmeter to check the thermistors. If one of the thermistors should become defective you may "jump" it with an 80 ohm ¼ watt resistor. This arrangement will reduce motor protection but will allow the compressor to operate. 8305 Sovereign Row • Dallas, Texas 75247 (800) 647-2665 tel • (214) 634-8227 fax www.dallashermetic.com Compressor Reference 2004 Page 1 of 1