Hypertherm Koolant Koolers N-Series, User Manual, Page: 32 / 77

Controller ‐ Alarms
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8.2 Alarms
When a warning or fault is present, the Chiller Fault Light will be lit (Refer to Figure 7), the button on the
controller will be lit red, and the controller buzzer will sound.
8.2.1 Turning off the Buzzer
When an alarm is present the buzzer can be turned off by pressing the button. Anytime a new alarm is
triggered the buzzer will resound.
8.2.2 Viewing Active Alarms
If at least one alarm is active, press the button to access the alarm menu and view the alarm. If there is more
than one active alarm, press the or buttons to navigate through the alarm list.
8.2.3 Resetting Alarms
There are three different types of alarms used on the chiller. Table 9 in section 9.1 defines each alarm and how
it is reset.
8.2.3.1 Auto Reset Alarms
Auto Reset Alarms are alarms that automatically reset when the condition that is creating the alarm
goes away.
8.2.3.2 Manual Reset Alarms
Manual Reset Alarms are alarms that require manual intervention to reset such as the inline heater limit
switch (Section 9.2) or the high pressure switch (Section 9.3).
8.2.3.3 User Reset Alarms
User Reset Alarms are alarms that must be reset by the user through the controller. If the condition that
caused the alarm is no longer present, then the chiller will return to normal operation when the user
resets the alarms. To reset the alarms:

Press the button to access the alarm menu.

Use the button to navigate to the end of the alarm list until the alarm reset screen is reached
which says “Press ALARM for 3s to reset all alarms”.

Press and hold the button for 3 seconds to reset the alarms.

Press the button as required to return to the main menu.
Hypertherm, Inc. Part Number: 810540