Function Test

The MP4000 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.

Note The function test does not test the actual performance of the complete system. Therefore it is not a pretrip test and should not be used instead of the PTI test.

With the unit turned On, allow it to start and stabilize and the display to show the unit status display (setpoint):

  1. Press the PTI KEY to open the PTI Menu.

  2. Press the F2 OR F3 UP/DOWN KEY to scroll to “Function Test”.

  3. Press the F4 key to start the Function Test. Display shows test currently being performed. The Function Test ends automatically. Press any key on the controller to return the unit to normal operation.

Any alarm codes recorded during the test can be viewed through the controller’s Alarm List menu at the end of the test.

Parent topic: PTI (Pretrip) Tests