Troubleshooting Polycold Cryochiller
Remote Monitor Troubleshooting Installation and Operation Manual
Brooks Automation
10-10
214072 Revision B
Remote Monitor Troubleshooting
This section is for the convenience of Remote Monitor troubleshooting. The tables below are the same
faults as previously listed in this chapter but are listed in numerical order of the bitmask value.
This section lists faults in numeric order of the bit mask value as received from the command
ACTIVE_ALARMS. See ALARM_STATUS Current Alarm Status on page 7-18.
For assistance in decoding bitmask values, see 32 Bit Numbered Bitfield on page 7-3.
Bit Mask Value Listing
Bit Mask Value / Problem Possible Cause Corrective Action
Bit 0
Customer Installed TC is out
of range
Fault LED Amber
Compressor ON
Difference between system TC
3/5 and customer installed TC
7/8 greater than value of
EXT_TC_ALARM when
EXT_TC_ENABLE is set to 1 for
the circuit
Absolute difference between
TC3 and TC7 > EXT_TC_
ALARM
or
Absolute difference between
TC5 and TC8 > EXT_TC_
ALARM
Fault sets EXT_TC_ENABLE to
0 for affected Ckt
Alarm L1
Check customer installed TC for
proper installation and proper
operation
Press Reset to clear alarm
Bit 1 Not used N/A N/A
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