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Diagnosis: Troubleshooting, Status Messages, Alarm Codes
167
03
Return Air Sensor Short Circuit
(Check Alarm)
• When the sensor circuit resistance is lower than
200 ohms.
• When the temperature is above 80 C (176 F).
• Indicates:
• Short circuit to sensor
• Defective or wrong sensor
• Defective relay board
• Defective cable No. 1
• Defective controller
• Check sensor resistance between pins 3 and
4 on plug J15. Resistance must be 2,000
ohms at 25 C (77 F).
• Check cable No. 1 between controller and
relay board.
04
Evaporator Coil Sensor Open Circuit
(Check Alarm)
• When the sensor circuit resistance is higher than
100,000 ohms.
• When the temperature is below -70 C (-94 F).
• Indicates:
• Open circuit to sensor Defective or wrong sensor
• Defective relay board
• Defective cable No. 1
• Defective controller
• Low evaporator coil temperature
• Check sensor resistance between pins 5 and
6 on plug J15. Resistance must be 2,000
ohms at 25 C (77 F).
• Check cable No. 1 between controller and
relay board.
• Check evaporator airflow.
05
Evaporator Coil Sensor Short Circuit
(Check Alarm)
• When the sensor circuit resistance is lower than
200 ohms.
• When the temperature is above 80 C (176 F).
• Indicates:
• Short circuit to sensor
• Defective or wrong sensor
• Defective relay board
• Defective cable No. 1
• Defective controller
• Check sensor resistance between pins 5 and
6 on plug J15. Resistance must be 2,000
ohms at 25 C (77 F).
• Check cable No. 1 between controller and
relay board.
Alarm Codes, Descriptions and Corrective Actions (Continued)
Code
Description
Corrective Action
Содержание 098916
Страница 2: ...MAGNUM TK 51122 4 MM Rev 6 02 06 Copyright 2004 Thermo King Corp Minneapolis MN USA Printed in USA...
Страница 5: ......
Страница 11: ...Table of Contents 10...
Страница 19: ...Service Guide 18...
Страница 28: ...Specifications 27 Figure 2 Physical Specifications AMA313...
Страница 41: ...Unit Description Features Options 40...
Страница 105: ...Operating Instructions 104...
Страница 155: ...Servicing The Unit 154...
Страница 187: ...Index 186...
Страница 189: ...Wiring and Schematic Diagrams Index 188...
Страница 190: ...189 Wiring Schematic...
Страница 191: ...190 Wiring Diagram Page 1 of 2...
Страница 192: ...191 Wiring Diagram Page 2 of 2...