Thermo King 098203, Руководство по обслуживанию

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Diagnosis: Troubleshooting, Warnings and Alarm Codes
217
26 Evaporator Coil Temperature Too Low –
Check Evaporator Sensor
• When:
• During Chill or Frozen Mode: Evaporator
coil temperature is too low compared to
return air temperature under operating
conditions. The state will by time request
extended defrost, defrost or/and probe test.
• Indicates:
• Ice on the evaporator coil, need for defrost.
• Probe error.
• Using DATA menu inspect readings.
• Enter Manual Function Test menu and operate
evaporator fan at high speed to evaluate probe
spread.
27 System Low Pressure – Check Refrigerant
Charge
• When:
• The warning is related to the capacity
surveillance system which observes the
reefer machine capability to create a
temperature drop between return air and
supply air when expected to be running at
high capacity.
• Action:
• If the expected delta temperature is not
reached the warning are set and the
evaporator fans stopped to prevent heating
the cargo.
• Indicates:
• Lack of refrigerant.
• Check Refrigerant level.
• Check for refrigerant flow through the system,
look for restrictions.
28 Frozen Setpoint – Check Air Exchange
• When:
• If AVL door is open in frozen set point mode.
• Indicates:
• Air ventilation ought to be in position closed
when running within frozen mode.
• Check air ventilation door position.
Warnings and Controller Actions (Continued)
Warning
No.
Warning Message/Description Controller Action/Corrective Action