Koolance RM2-4U - Manual (Page 51)

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4. After the system has been on for awhile, the temperature alarm sounds...
Make sure that the LED temperature reads at least 50ºC (122ºF) or higher
while the alarm is sounding; if not, the audio alarm may in fact be your
motherboard’s BIOS alarm. If the system is not exhibiting signs of over-
heating (see #2 in Troubleshooting), this temperature monitor may need to
be disabled to ignore false readings by BIOS. The Koolance LED Display
will flash “FLT” (fault) whenever the cooling system alarm sounds.
If the alarm sounds within a few seconds after a cold boot-up, or the LED
temperature does not read at least 50ºC (122ºF) while the alarm is on, the
control board/pumps may be malfunctioning. Please visit our support web
page for more information.
Verify that the pumps are operating (see Troubleshooting #1), and that
liquid flow is present in the reservoir. Note that if the reservoir was over-
filled during system assembly, this procedure is not possible.
5. My system has boot-up problems, or does not turn on...
The majority of these problems are not related to the Koolance case, but
hardware or configuration issues. In a new system, a problem with the
RAM, motherboard, power supply, video card, processor, or monitor can
cause the system to appear not to boot-up properly.
If the top Heat Exchanger fans do not spin, or if the front LED Display
Panel does not light-up, check to see if your motherboard has a power
indicator LED on the board. This is usually a green light next to the ATX
power connector on newer motherboards. If this is lit, power is getting to
the board.
The Power Control Board (or Exos Slot Interface Adapter) should be
checked to make sure all connections are plugged-in, especially the 12V
4-pin power supply connection. Also be sure if your power supply has a
rear power switch, that it is in the ON (“-”) position, and switched to the
appropriate regional current (115VAC or 220VAC).
Another possibility is that the motherboard is shorting-out electrically on
the chassis. Remove the motherboard, and verify that the stand-offs are
properly installed. Lastly, check that the IO shield (the thin aluminum rear
motherboard ATX port plate) is not bent backwards around the
motherboard, possibly shorting a component.
If further problems persist, you are likely having a separate hardware issue.