Doosan DX225LC, Manual, Page: 78 / 136

Electrical System
Page 77
SP000935
When the engine coolant temperature increases to over 107°C
(225°F), the engine controller detects it from the sensor
mounted in the coolant line and will send a signal to the e-EPOS
controller. The e-EPOS controller sends a overheat signal to the
instrument panel turning "ON" the warning light and buzzer
simultaneously.
Also, the e-EPOS controller returns an overheat signal to the
engine controller and changes power mode to standard mode.
The engine speed is then set to a low speed by the engine
controller.
When coolant temperature falls below 95°C (203°F), normal
operation will resume.