Troubleshooting
Polycold Cryochiller
Remote Monitor Troubleshooting
Installation and Operation Manual
Brooks Automation
10-12
214072 Revision B
Bit 8
High discharge temperature
LED Amber
Warning: Compressor ON
Alarm: Compressor OFF
Compressor Discharge Temper-
ature (TC1) too high
TC1 80 to 125C is normal
TC1 125 to 148.9C at startup is
normal
TC1 135 to 148.9C for 30 min
Warning L2
TC1 135 to 148.9C for 40 min
Alarm L1
TC1 145 to 148.9C for 2 min
Warning L2
TC1 >149C immediate Alarm L1
Contact authorized service
Bit 9
Rapid Balance Pressure
Check Valve Cycle Count
Fault LED Amber
Compressor ON
Rapid Balance Pressure Check
Valve Cycle Count has exceeded
limit
CRYO_VALV_OPEN_CNT
for Rapid Balance Pressure
Check Valve >
VALVE_CYCLE_WARN
Alarm L1
Contact authorized service
Bit 10
Input power out of range
Fault LED Amber
Warning: Compressor ON
Alarm: Compressor OFF
Input voltage out of range of
PWR_WARN_BAND
Voltage outside of range of
PWR_WARN_BAND for 10sec
Waning L2 - Comp On
(10 sec to restart compressor)
Voltage outside of range of
PWR_WARN_BAND for 30min
Alarm L1 - Comp Off
(10 min to restart compressor)
Voltage above 33.2V for 1min
Alarm L1 -Comp Off
(10 sec to restart compressor)
Check and correct the input
voltage
Bit Mask Value / Problem
Possible Cause
Corrective Action