Alarms and Events ESIE10-01
3–18 Part 3 – Troubleshooting
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1.4 Circuit Stop Alarms
All circuit stop alarms require shutdown of the circuit on which they occur. Rapid stop alarms do not
do a pumpdown before shutting off. All other alarms will do a pumpdown.
When one or more circuit alarms are active and no unit alarms are active, the alarm output should be
switched on and off on 5 second intervals.
Alarm descriptions apply to all circuits, the circuit number is represented by 'N' in the description.
Overview This chapter contains the following topics:
Topic See page
1.4.1–Phase Volts Loss/GFP Fault 3–19
1.4.2–Low Evaporator Pressure 3–20
1.4.3–Low Pressure Start Fail 3–21
1.4.4–Mechanical Low Pressure Switch 3–22
1.4.5–High Condenser Pressure 3–23
1.4.6–Low Pressure Ratio 3–24
1.4.7–Mechanical High Pressure Switch 3–25
1.4.8–High Discharge Temperature 3–26
1.4.9–High Oil Pressure Difference 3–27
1.4.10–Compressor Starter Fault 3–28
1.4.11–High Motor Temperature 3–29
1.4.12–Low OAT Restart Fault 3–30
1.4.13–No Pressure Change After Start 3–31
1.4.14–No Pressure At Startup 3–32
1.4.15–CC Comm Failure N 3–33
1.4.16–FC Comm Failure Circuit 1/2 3–34
1.4.17–FC Comm Failure Circuit 3 3–35
1.4.18–FC Comm Failure Circuit 4 3–36
1.4.19–FC Comm Failure Circuit 3/4 3–37
1.4.20–EEXV Comm Failure N 3–38
1.4.21–Evaporator Pressure Sensor Fault 3–39
1.4.22–Condenser Pressure Sensor Fault 3–40
1.4.23–Oil Pressure Sensor Fault 3–41
1.4.24–Suction Temperature Sensor Fault 3–42
1.4.25–Discharge Temperature Sensor Fault 3–43
1.4.26–Motor Temperature Sensor Fault 3–44
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