Keys and Indicator LEDs

Parent topic: Controller Description

Function Keys

The function keys are the F1 - F4 keys located below the display. They allow the operator to move quickly to a specific area of the information or into the controller menu.

Note Function keys will change based on what menu is active in the display.

  • F1 ALARM Key: Press to view an explanation for the current alarms present.

  • F2 C/F Key: Press to view alternate temperature scale Celsius or Fahrenheit in display.

  • F3 SETPOINT Key: Press to enter Setpoint menu. Press F2 Up or F3 Down keys to increase or decrease the Setpoint. Press and Hold F4 until you are returned back to the main menu.

  • F4 MENU Key: Press to view the extended Menu for the MP4000.

Special Function Keys

The Special Function keys are located around the Thermo King logo. These special function key allow the operator to move quickly to perform a specific function

  • Pre-Trip Inspection

  • Defrost

  • Unit On/Off Control

Indicator LEDs

Two status indicator LEDs are located just under the F1 - F4 function keys.

Green LED Flashing Temperature approaching in-range.
Solid Temperature in-range.
Red LED Flashing Alarm present and has not been acknowledged.
Solid Alarm present and has been acknowledged.