38 AGZ 025D through 190D OMM 1166-1
Unit Warning Alarms
External Event
Trigger: External Alarm/Event input is open for at least 5 seconds and external fault is configured as
an event.
Action Taken: None
.
Reset: Auto clear when digital input is closed.
Bad Demand Limit Input
Trigger: Demand limit input out of range and demand limit is enabled. For this alarm out of range is
considered to be a signal less than 3mA or more than 21mA.
Action Taken: Cannot use demand limit function.
Reset: Auto clear when demand limit disabled or demand limit input back in range for 5 seconds.
Bad LWT Reset Input
Trigger: LWT reset input out of range and LWT reset is enabled. For this alarm out of range is
considered to be a signal less than 3mA or more than 21mA.
Action Taken: Cannot use LWT reset function.
Reset: Auto clear when LWT reset is disabled or LWT reset input back in range for 5 seconds.
Evaporator EWT Sensor Fault
Trigger: Sensor shorted or open
Action Taken: None.
Reset: Auto clear when the sensor is back in range.
Circuit Fault Alarms
PVM/GFP Fault
Trigger: Power Configuration = Multi Point and circuit PVM/GFP input is open.
Action Taken: Rapid stop circuit.
Reset: Auto reset when input is closed for at least 5 seconds or if Power Configuration = Single Point.
Low Evaporator Pressure
Trigger:
This alarm should trigger when Freeze time is exceeded, Low Ambient Start is not active, and Circuit
State = Run. It should also trigger if Evaporator Press < 137.9 KPA (20 PSI) and Circuit State = Run.
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