Thermo King CRR-40 119, Руководство пользователя

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MP-3000a Controller
101
Diagnosis and Repair
If the unit appears to be operating incorrectly,
view any alarm codes that may be stored in the
controller display memory. Diagnose and correct
the problem associated with each alarm code (see
“Alarm Codes, Alarm Types and Corrective
Actions” in this chapter).
NOTE: Defrost can be delayed for 24 hours
during unit diagnosis or testing: Press “7” key
and F1 key at the same time from any controller
screen display. Press F3 key to scroll cursor
down to DELAY DEF menu line. Then press F4
key, F2 key, “A” key, F4 key and EXIT key.
Cursor moves to end of line and flashes.
Pressure F3 key to toggle OFF to ON. Then
press and hold F4 key until cursor stops
flashing.
If you have viewed and corrected these problems
and the unit still appears to be operating
incorrectly, eliminate any possibility that the
problem is caused by failure of components other
than the controller.
External Cause Checks
• Poor contact between male and female
connector plugs (loose connection).
• Defective wire harness (broken wires, loose
connections).
• External electrical causes such as faulty (open
or stuck) contactors
.
• Malfunction of refrigeration system
components.
Status Messages and Controller
Actions
The controller displays Status messages in the
LCD display for several general faults. More than
one Status message may appear at a time. Press F2
or F3 key to scroll through message displays.
A. Coil Support Brackets
B. Unit Front
C. Insert Sensor at least 75 mm into coil between
tube rows 2 and 3
Figure 27: Evaporator (Defrost) Sensor Location
AJA1282