Thermo King 098916, Руководство по обслуживанию

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Diagnosis: Troubleshooting, Status Messages, Alarm Codes
168
06* Compressor Current Too High
(Check Alarm)
• Occurs during pretrip (PTI) or function test only.
• Compressor power consumption is 25 percent
expected current draw (above approximately 13
amps); or compressor phase current level
difference of 10 percent or more, depending on
ambient temperature.
• Indicates:
• Defective Digital Control valve
• Defective compressor
• Defective volt or amp meter on relay board
• Inaccurate ambient, condenser or evaporator
temperature measurement
• Out of range power supply
• Excessive condenser pressure due to air or
wrong refrigerant in system, or refrigerant over
charge
• Check evaporator, condenser and ambient
sensor temperatures for correct value
(± 5 C [± 9 F]) by viewing Data menu.
• Enter Manual Function Test menu. Start and
check current draw of the following
components separately and together:
compressor, compressor 100 percent,
condenser fan and evaporator fan (high and
low).
• Check volt and ampere meter.
• Check power supply volts.
07* Compressor Current Too Low
(Check Alarm)
• Occurs during pretrip (PTI) or function test only.
• Compressor power consumption is 25 percent
below expected current draw (below approximately
9 amps).
• Indicates:
• Defective or open fuse CB 7A, high pressure
cutout switch or connection in plug J19 between
pins 7 & 8
• No signal on plug J11 on pin 8
• Defective compressor relay
• Defective volt or amp meter on relay board
• Low refrigerant charge
• Defective compressor
• Enter Manual Function Test menu. Start and
check current draw of the following
components separately and together:
compressor, compressor 25 percent,
condenser fan and evaporator fan (high and
low). If relay does not energize and the LED
above the compressor relay is not on, check
for a defective cable No. 2, main relay board
or controller.
• Check discharge and suction pressure gauge
readings. Evaluate readings based on current
cargo and ambient temperatures.
• Check volt and ampere meter.
• Check power supply volts.
*If both Alarms 06 and 07 are activated, the alarms are caused by a large difference in measured amps. Enter Function Test
and start condenser fan, compressor, compressor 100 percent and evaporator fans on high speed. Check the amps measure-
ments. If necessary, check the resistance of the motor windings.
Alarm Codes, Descriptions and Corrective Actions (Continued)
Code Description Corrective Action