Trane Thermo King Magnum Plus Operator's Manual page 23

Controller Description
Hold F4 until you are returned back to the
main menu.
• F4 MENU key: Press to view the extended
Menu for the MP4000
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
20
Three Special Function Keys
The Special Function keys are located around
the TK Logo. These special function key allow
the operator to move quickly to perform a
specific function
Special Function Keys
PTI Pre-Trip Inspecion
* Defrost
ON Unit On/OFF Control
OFF