18
SuperServer E403-9D-16C-IP User's Manual
Information LEDs
There are information LEDs located on the power distribution panel and the heat exchanger
control box (HEX) to indicate the status of the system. They are also used to send out alarms
if certain areas of the system malfunction. Please refer to the table below for more information.
Information LEDs
LED
Location
Status
Description
On
Off
Flashing
Sensor
A
Dark
System is powered off
Green
Enclosure temperature is normal
Red
Enclosure temperature is below 0
ºC
or above 65
ºC
Switch
A
Dark
Server is powered off
Green
Server is powered on
Red
Power to server cannot be cut off
Heater
A
Dark
Heater is off
Green
Heater is on
Red
Heater cannot be turned off
HEX
A
Dark
Heat exchanger is off or not responding
Green
Heat exchanger is operating normally
Green
Control board is frozen
Red
No communication between the thermal control
board and the heat exchanger
Fan
B
Dark
Fans are powered off
Green
Heat exchanger initiating
Green
Fans are operating normally
Red
Fan failure
Sensor
B
Dark
Heat exchanger is powered off
Green
Heat exchanger initiating
Green
Heat exchanger is operating normally
Red
Temperature sensor in the heat exchanger has
failed
Location A: Power distribution panel (Figure 1-6)
Location B: Heat exchanger control box (below)
Figure 1-7. Heat Exchanger Control Box
