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Diagnosis: Troubleshooting, Status Messages, Alarm Codes
179
97
Compressor Sensor Open Circuit
(Check Alarm)
• When the sensor circuit resistance is higher than
10,000,000 ohms.
• Temperature is below -30 C (-22 F).
• Indicates:
• Open 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.
NOTE: Unit will operate normally without
compressor sensor. However, controller
compressor high temperature protection is
not active.
98
Compressor Sensor Short Circuit
(Check 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.
115
Probe Error
(Check Alarm)
• Occurs during pretrip (PTI) test or probe test failed
in Chilled mode.
• Temperature difference between return air and
evaporator coil sensors is too high (1.5 C [2.7 F]
difference maximum)
• Check sensor connections. Check sensor
resistance of each sensor. Resistance must be
2,000 ohms at 25 C (77 F).
116
Probe Error
(Check Alarm)
• Occurs during pretrip (PTI) test or probe test failed
in Chilled mode.
• Temperature difference between return air and
supply air sensors is too high (0.8 C [1.5 F]
difference maximum)
• Check sensor connections. Check sensor
resistance of each sensor. Resistance must be
2,000 ohms at 25 C (77 F).
117
Probe Error
(Check Alarm)
• Occurs during pretrip (PTI) test or probe test failed
in Chilled mode.
• Temperature difference between LH supply and RH
supply sensors is too high (0.5 C [1.0 F] difference
maximum)
• Check sensor connections. Check sensor
resistance of each sensor. Resistance must be
2,000 ohms at 25 C (77 F).
• Check left hand and right hand supply air
sensor locations.
119
Digital Control Valve Error
• Current consumption not correct for valve position
• Check Digital Valve function
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...