21
Fault C5
Low Chilled Water Temperature (Unit Off):
IFW
- Antifreeze protection
Fault C6
Low Chilled Water Temperature (Unit On):
MAR
- Antifreeze protection
Fault CA
Contactor - Compressor A:
MMR
- Welded compressor contactor
Fault Cb
Contactor - Compressor B:
MMR
- Welded compressor contactor
Fault CC
Contactor - Compressor C:
MMR
- Welded compressor contactor
Fault Cd
Contactor - Compressor D:
MMR
- Welded compressor contactor
Fault d7
Over Voltage:
MAR
- Voltage 10% > nominal
Fault d8
Under Voltage:
MAR
- Voltage 10% < nominal
Fault Ed
Chilled Water Flow Interlock:
MAR
- Flow switch open more than 6 seconds
Fault F5
High Pressure Cutout - Compressor A:
MMR
- High pressure too high
Fault F6
High Pressure Cutout - Compressor B:
MMR
- High pressure too high
Fault Fd
Emergency Stop Input:
MMR
- Emergency stop input open
Fault 180
Starter Transition - Compressor A:
CMR
1) Transition proof signal not received
2) Proof input shunted
Fault 181
Starter Transition - Compressor B:
CMR
1) Transition proof signal not received
2) Proof input shunted
Fault 182
Starter Transition - Compressor C:
CMR
1) Transition proof signal not received
2) Proof input shunted
Fault 183
Starter Transition - Compressor D:
CMR
1) Transition proof signal not received
2) Proof input shunted
Fault 184
Phase Reversal - Compressor A:
CMR
- Phase reversed
Fault 185:
Phase reversal - Compressor B
CMR
- Phase reversed
Fault 186
Phase reversal - Compressor C:
CMR
- Phase reversed
Fault 187
Phase reversal - Compressor D:
CMR
- Phase reversed
Fault 190
Low Superheat - Circuit 1:
CMR
- Superheat < 1°C during more than
1333°C x seconds
