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Microprocessor Controller
95
98
Compressor Sensor Short Circuit
(Log Alarm)
• Sensor circuit resistance lower than 200 ohms.
• Temperature above 180 C (356 F).
• Indicates:
• Short circuit to sensor
• Defective or wrong sensor
• Defective relay board
• Defective cable No. 1
• Defective controller
• Check sensor resistance between pins 9 and
10 on plug J15. Resistance must be 100,000
ohms at 25 C (77 F).
• Check cable No. 1 between controller and relay
board.
112
Zero Current Too High
(Check Alarm)
• Ground (zero current) circuit 30 milliamps.
• Indicates:
• Defective motor or heater insulation to ground
• Start “Manual Function Test” and operate each
motor and heater separately. Note when alarm
occurs.
Code
Description
Corrective Action
Содержание Thermo King CRR DF MPC2000
Страница 5: ...4 ...
Страница 11: ...List of Figures 10 ...
Страница 13: ...Introduction 12 ...
Страница 19: ...Safety Precautions 18 ...
Страница 21: ...Service Guide 20 ...
Страница 47: ...Unit Description 46 ...
Страница 97: ...Microprocessor Controller 96 ...
Страница 101: ...Electrical Maintenance 100 ...
Страница 141: ...Structural Accessory Maintenance 140 ...
Страница 147: ...Refrigeration System Diagnosis 146 ...
Страница 149: ...Electrical Refrigeration and Controller Menu Flow Diagrams 148 This page intentionally left blank ...
Страница 150: ...149 CRR DF MPC2000 Controller Diagram ...
Страница 151: ...150 CRR DF MPC2000 Main Relay Board Electrical Diagram ...
Страница 152: ...151 CRR DF MPC2000 Unit Wiring Schematic Low Speed Winding ...
Страница 153: ...152 CRR DF MP3000A Controller Diagram ...
Страница 154: ...153 CRR DF MP3000A Main Relay Board Electrical Diagram ...
Страница 155: ...154 CRR DF MP3000A Unit Wiring Schematic Low Speed Winding ...
Страница 157: ...156 CRR DF Refrigeration System Components Page 2 of 2 ...
Страница 159: ...158 CRR DF Off Cycle Standby Flow and Pressure Diagram Page 2 of 2 CRR DF Off Cycle Standby Flow and Pressure Diagram ...
Страница 161: ...160 CRR DF Full Cool Flow and Pressure Diagram Page 2 of 2 ...
Страница 163: ...162 CRR DR Evacuation Station and Unit Connections Page 2 of 2 ...