207
Diagnosis: Troubleshooting, Warnings and
Alarm Codes
Introduction
This chapter includes the following:
•
Introduction to Controller Diagnostics
•
Troubleshooting charts
•
Warnings chart
•
Alarm Codes chart
The charts will help you identify and fix unit problems.
Controller Diagnostics
The MP4000 can be a very helpful diagnostic tool.
The following menu areas of the MP4000 controller menu will help you diagnose problems occurring
with the Magnum unit.
Alarms/Warnings Menu:
The Alarm/Warning list menu displays the code conditions. Alarm/Warning
codes are recorded in the controller memory to simplify unit diagnosis procedures. Some alarm codes are
only recorded during a Pretrip (PTI) test or function test. Fault codes are retained by the controller in a
non-volatile memory. If the Red LED is on or flashing, enter the alarm list to view the alarm.
Brief PTI Test:
The MP-4000 controller contains a special Brief PTI pretrip test that automatically checks
unit refrigeration capacity, heating capacity, temperature control, and individual components including
the controller display, solid state, contactor, fans, protection devices and sensors. The test includes
measurement of component power consumption and compares test results to expected values. The test
takes about 25-30 minutes to complete, depending on the container and ambient temperature. Refer to the
Brief PTI Test in the Operating Instructions Section.
Full PTI Test:
The MP-4000 controller contains a special Full PTI pretrip test that automatically checks
unit refrigeration capacity, heating capacity, temperature control, and individual components including
the controller display, solid state, contactor, fans, protection devices and sensors. The test includes
measurement of component power consumption and compares test results to expected values. The test
takes up to 2 to 2.5 hours to complete, depending on the container and ambient temperature. Refer to the
Full PTI Test Menu in the Operating Instructions Section.
Functions Test:
The MP-4000 controller contains a special function test that automatically tests individual
components including the controller display, sensors, condenser fan, evaporator fan, compressors, etc.
The test includes measurement of component power consumption and compares test results to expected
values. Refer to the Functions Test Menu in the Operating Instructions Section.
Manual Functions Test:
The Manual Function Test menu allows technicians to perform specific diagnostic
tests on individual components or turn several components on at the same time to perform a system test.
Refer to the Manual Functions Test Menu in the Operating Instructions Section.
Data:
The Data menu displays general unit operating information including sensor temperatures, unit
electrical data, etc. Refer to the Data Menu in the Operating Instructions Section.
Summary of Contents for 098203
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Page 257: ...255 Schematic Diagram RELEASED 19 Sep 2013...
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