Trane MP-4000, Operator'S Manual

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DIAGNOSIS: TROUBLESHOOTING, WARNINGS AND ALARM CODES
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.