McQuay AWS User Manual

KOMAC00607-09EN 43
Trigger: [Circuit 1 or Circuit 2 Number of Fans > 6 OR PVM Config = Multi
Point] and communication with the I/O extension module has failed. Section 3.1
indicates the expected type of module and the address for each module.
Action Taken: Rapid stop of circuit 1 and 2
Reset: This alarm can be cleared manually via the keypad when communication
between main controller and the extension module is working for 5 seconds.
FC Comm Failure Circuit 3
Alarm description (as shown on screen): FC Comm Fail Cir 3
Trigger: Number of Circuits set point is greater than 2 and communication with
the I/O extension module has failed. Section 3.1 indicates the expected type of
module and the address for each module.
Action Taken: Rapid stop of circuit 3
Reset: This alarm can be cleared manually via the keypad when communication
between main controller and the extension module is working for 5 seconds.
FC Comm Failure Circuit 4
Alarm description (as shown on screen): FC Comm. Fail Cir 4
Trigger: Number of Circuits set point is greater than 3 and communication with
the I/O extension module has failed. Section 3.1 indicates the expected type of
module and the address for each module.
Action Taken: Rapid stop of circuit 4
Reset: This alarm can be cleared manually via the keypad when communication
between main controller and the extension module is working for 5 seconds.
FC Comm Failure Circuit 3/4
Alarm description (as shown on screen): FC Comm. Fail Cir 3/4
Trigger: Circuit 3 or circuit 4 Number of Fans > 6, Number of circuits set point >
2, and and communication with the I/O extension module has failed. Section 3.1
indicates the expected type of module and the address for each module.
Action Taken: Rapid stop of circuit 3 and 4
Reset: This alarm can be cleared manually via the keypad when communication
between main controller and the extension module is working for 5 seconds.
EEXV Comm Failure N
Alarm description (as shown on screen): EEXV Comm. Fail N
Trigger: Communication with the I/O extension module has failed. Section 3.1
indicates the expected type of module and the address for each module. Alarm on
Circuit #3 will be enabled if Number of Circuits set point > 2; alarm on Circuit #4
will be enabled if Number of Circuits set point > 3.
Action Taken: Rapid stop of affected circuit
Reset: This alarm can be cleared manually via the keypad when communication
between main controller and the extension module is working for 5 seconds.
Evaporator Pressure Sensor Fault
Alarm description (as shown on screen): EvapPressSensFault N
Trigger: Sensor shorted or open
Action Taken: Rapid stop circuit
Reset: This alarm can be cleared manually via the keypad, but only if the sensor
is back in range.
Condenser Pressure Sensor Fault
Alarm description (as shown on screen): CondPressSensFault N
Trigger: Sensor shorted or open
Action Taken: Rapid stop circuit

McQuay AWS Specifications

General

Brand	McQuay
Model	AWS
Category	Chiller
Language	English