Copeland E3 - Page 170

©2025 Copeland LP.
026-1803 R13 Supervisor I&O User Guide A - 7
Protector
Trip
Device
Alarm
T-Stat
Thermostat demand signal Y is present, but the compressor is
not running. The possible causes are: Compressor protector is
open, Outdoor unit power disconnect is open, Compressor
circuit breaker or fuse(s) is open, Broken wire or connector is
not making contact, High pressure switch open if present in
system, Compressor contactor has failed open.
Case Temp
Fail
Device
Alarm
XR75CX
(Case temperature probe failure alarm) Alarm when the case
termination probe fails.
Defr Term
Fail
Device
Alarm
XR75CX
(Defrost termination probe failure alarm) Alarm when the
defrost termination probe fails.
High Case
Alarm
Device
Alarm
XR75CX
Alarm if case temperature exceeds maximum case temperature
setpoint.
Low Case
Alarm
Device
Alarm
XR75CX
Alarm if case temperature falls below minimum case
temperature setpoint.
RTC Data
Lost
Device
Alarm
XR75CX Alarm when the real time clock data is lost.
RTC Failure
Device
Alarm
XR75CX Alarm when the real time clock fails.
External
Alarm
Device
Alarm
XR75CX
Alarm that indicates whether the relay is configured for
alarming.
Door Open
Device
Alarm
XR75CX The door open alarm is activated.
EEPROM
Failure
Device
Alarm
XR75CX Alarm when the flash memory in the device fails.
Alarm Items Category Cell Name Description