SRC Service Manual
Revision 02
Aug 2007
10. Alarms & Warnings
10.1 Alarm & Warning List
Code Description Type Action
High Pressure (Refrigerant) Alarm Immediate. Stops dryer.
Low Pressure (Refrigerant) Alarm 5 minute delay. Stops dryer
Low Dewpoint (B1) Alarm Immediate. Stops dryer.
Coolant Temp Sensor (B2) Alarm Immediate. Stops dryer.
High Dewpoint (B1) Warning 3 minute delay (15 min at start up)
Drain Error Warning Changes to Timed Mode.
Dewpoint Temp Sensor Error (B1) Warning Immediate.
Service Required Warning Immediate.
The control board is provided with an alarm relay with NO/NC contacts. The relay is normally
energized once the controller is powered in order to provide an alarm indication when a fault happens
or when power is disconnected.
When the controller gets a signal to indicate an alarm or warning, it cuts power to the alarm relays,
turns on the “Warning” light, and displaying the alarm code on the digital display. Each alarm/warning
is identified with a number which is used to pass the information through the serial port.
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