Specifications

55
Alarm/Alert Alarm Description Why was this Action taken Reset Probable
code or Alert alarm generated ? by control method cause
67 Alert Circuit A high SCT > MCT_SP + 2.8°C Circuit A shut down Automatic Faulty transducer/high pressure switch,
discharge pressure restricted condenser water flow.
68 Alert Circuit B high SCT > MCT_SP + 2.8°C Circuit B shut down Automatic Faulty transducer/high pressure switch,
discharge pressure restricted condenser water flow.
70 Alert High leaving chilled LCW read > LCW Delta Alert only. None Automatic Building load greater than capacity,
water temperature alarm limit and total capacity is low water/brine flow, or compressor fault.
100 % and current LCW > LCW Check for other alarms or alerts.
reading 1 minute ago.
71 Alert Circuit A low oil level/flow Level switch input open. Circuit A shut down Manual Low oil level, failed switch, wiring error.
72 Alert Circuit B low oil level/flow Level switch input open. Circuit B shut down Manual Low oil level, failed switch, wiring error.
73 Alert Circuit A low discharge Superheat < 2.8°C Circuit A shut down Manual Faulty thermistor, transducer or EXV.
superheat for 10 minutes
74 Alert Circuit B low discharge Superheat < 2.8°C Circuit B shut down Manual Faulty thermistor, transducer or EXV.
superheat for 10 minutes
75 Alarm Compressor A1 max. oil (Discharge pressure - oil Comp. A1 shut down Manual Low water temperature, plugged oil filter,
Delta P, check oil line pressure) > 680 kPa for more closed oil valve, bad oil solenoid,
than 5 seconds compressor oil check valve stuck,
plugged oil strainer
76 Alarm Compressor A2 max. oil (Discharge pressure - oil Comp. A2 shut down Manual Low water temperature, plugged oil filter,
Delta P, check oil line pressure) > 680 kPa for more closed oil valve, bad oil solenoid,
than 5 seconds compressor oil check valve stuck,
plugged oil strainer
77 Alarm Compressor B1 max. oil (Discharge pressure - oil Comp. B1 shut down Manual Low water temperature, plugged oil filter,
Delta P, check oil line pressure) > 680 kPa for more closed oil valve, bad oil solenoid,
than 5 seconds compressor oil check valve stuck,
plugged oil strainer
78 Alarm Compressor B2 max. oil (Discharge pressure - oil Comp. B2 shut down Manual Low water temperature, plugged oil filter,
Delta P, check oil line pressure) > 680 kPa for more closed oil valve, bad oil solenoid,
than 5 seconds compressor oil check valve stuck,
plugged oil strainer
79 Alarm Compressor A1 failed oil Diff. oil pressure > 17 kPa Comp. A1 not allowed Manual Faulty oil solenoid valve.
solenoid during period after oil pump to start
starts and before oil solenoid
opens
80 Alarm Compressor A2 failed oil Diff. oil pressure > 17 kPa Comp. A2 not allowed Manual Faulty oil solenoid valve.
solenoid during period after oil pump to start
starts and before oil solenoid
opens
81 Alarm Compressor B1 failed oil Diff. oil pressure > 17 kPa Comp. B1 not allowed Manual Faulty oil solenoid valve.
solenoid during period after oil pump to start
starts and before oil solenoid
opens
82 Alarm Compressor B2 failed oil Diff. oil pressure > 17 kPa Comp. B2 not allowed Manual Faulty oil solenoid valve.
solenoid during period after oil pump to start
starts and before oil solenoid
opens
Alarms and alerts codes table (cont.)
Legend:
CPM: Compressor Protection Module
FSM: Flotronic™ System Manager
PS: Power supply
WSM: Water System Manager
MTA: Compressor Must Trip Amps.