March 2021 Page 97 of 143 59812-K007 Rev 17
5.1.4 Fault List
A list of the fault messages that may be viewed in the Event Log are detailed below.
Following a Backup Alarm Test the Control Unit failed to detect the
activation of the backup alarm signal from a detector.
The event message will identify which detector has failed.
Communications failure between the Control Unit and a Detector.
The event message will identify which detector has failed.
Oil contamination within the sample chamber has reduced the light
levels below an acceptable limit.
The event message will identify which detector has failed.
A fault occurred when accessing the Control Unit memory, either the
Flash Memory, the Random Access Memory (RAM) or the Real Time
Clock Memory (RTC).
A Control Unit software error resulted in an automatic restart of the
software.
A detector fan has stopped rotating.
The event message will identify which detector has failed.
A fault has been detected when accessing the gain digipot in a detector.
The detector oil mist levels may not be accurate.
The event message will identify which detector has failed.
Offset Digipot Read Fault
A fault has been detected when accessing the offset digipot in a
detector. The detector oil mist levels may not be accurate. The event
message will identify which detector has failed.
Oil contamination within the sample chamber has reduced the light
levels reaching the measurement photodiode below an acceptable
limit. The event message will identify which detector has failed.
The number of writes to the Control Unit Flash Memory has reached
the manufacturers guaranteed number of writes, 100,000 erase
cycles.
A detector software error resulted in an automatic restart of the
software.
The event message will identify which detector has failed.
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