Alarm Codes - Emerson Copeland Scroll XFAL Series Installation And Reference Manual

11. Alarm Codes

Code Description
Suction pressure
E01
transducer error
Condenser
E02 temperature sensor
error
Discharge line
E03 temperature sensor
error
EVI heat exchanger
E04 vapor inlet temperature
error (XFALs only)
EVI heat exchanger
vapor outlet
E05
temperature error
(XFALs only)
Ambient temperature
E06
sensor error
Liquid line temperature
E07 sensor error (XFALs
only)
E09-E10 Current sensor error
E11-E13 Voltage sensor error
Lost phase error/
E20
lockout (Three phase
L20
only)
Phase sequence error
E21
/ lockout (Three phase
L21
only)
Phase imbalance
E22
(Three phase only)
E23 Over current error/
L23 lockout
E24 Open run circuit error/
L24 lockout
© 2016 Emerson Climate Technologies, Inc.
Alarm Level Diagnostic Resolution
Check wire connection to the
top of the controller (A1)
Alarm
Check to ensure suction
pressure is below 135 PSIG
Check wire connection to the
Alarm
top of the controller (A2)
Check wire connection to the
Alarm
top of the controller (A3)
Check wire connection to the
Alarm
top of the controller (A4)
Check wire connection to the
Alarm
top of the controller (A5)
Check wire connection to the
Alarm
top of the controller (A6)
Check wire connection to the
Alarm
top of the controller (A7)
Check wires are properly routed
Alarm through controller current
transducers per wiring diagram
Check wires are connected to
Alarm voltage sensing connections (R,
S, T) per wiring diagram
Alarm
Check power to unit
Lockout
Alarm Reverse two phases incoming
Lockout power to unit
Alarm Check incoming electrical power Correct incoming voltage supply
Confirm system operation to
Alarm find out what is causing the
Lockout compressor to pull excessive
Alarm
Check run capacitor
Lockout
29
Replace faulty suction pressure
Replace faulty temperature
Replace faulty temperature
Replace faulty temperature
Replace faulty temperature
Replace faulty temperature
Replace faulty temperature
Replace faulty controller
Replace faulty controller
Check wires are connected to
voltage sensing connections (R,
S, T) per wiring diagram
Check wires are connected to
voltage sensing connections (R,
S, T) per wiring diagram
current
Check start component wiring
Check wires are properly routed
through controller current
transducers per wiring diagram
AE5-1412 R1
Possible Fix
transducer
sensor
sensor
sensor
sensor
sensor
sensor
per diagram