2017 Emerson Climate Technologies, Inc - Emerson XJAL-020Z-CFV-012 Manual

Code Code
Character Character Fault Type
1 2
Discharge Gas
2 4
Overheat
High Pressure
2 5
Trip
Discharge
Line And Coil
in Temp
2 7
Sensors
Failure
(See Table
12)
Reverse
Phase/Loss of
4 1
phase
(3 phase only)
4 3
Over Current
© 2017 Emerson Climate Technologies, Inc.
Control Board
Trip to Set Point
Actions
-Stop the Unit
-Display DLT trip on
diagnostic
-Display waiting to
Discharge
restart on diagnostic
Temperatures over
270°F
-Auto start the unit
after 3 minutes
-Lockout unit if 6 trips
within 1 hour
-Stop the Unit
-Display HP trip on
diagnostic
-Contact open at 435
-Display waiting to
psig ±22psig
restart on diagnostic
-Contact Close at
-Auto start the unit
348 psig ±22psig
after 3 minutes
-Lockout unit if 6 trips
within 1 hour
(Only in XJAL)
-Actual DLT>320°F
-Stop the unit
~DLT Sensor Fails
-Display DLT sensor
and actual DLT>
failure on the
176°F
diagnostic
-Both coil-in and DLT
-Display waiting to
sensors fail (short
restart on diagnostic
circuit)
-Auto start the unit
after 3 minutes
-Stop the unit
-Display the incorrect
phase
Incorrect Voltage -Display waiting to
sequence restart on diagnostic
-Check the phase
sequence after 3
minutes
-Stop the Unit
-Display over current
trip on diagnostic
Set based on
-Auto start the unit
Compressor
after 3 minutes
-Lockout unit if 6 trips
in less than 12 hour
31
AE5-1377 R3
Auto
Possible Error and Solution
Resets
-Verify system operations to be with in
unit pressure / temperature envelope of
5 Auto
the unit
Starts in 1
hour -Review return gas temperatures at the
compressor.
-Check fan motor / blade operations,
verify wiring of the system.
5 Auto
-Blocked condenser, air re-circulation ,
Starts in 1
Non Condensables
Hour
-Check liquid line solenoid valve, liquid
service valve, make sure they are open
-Verify proper connection at the main
control board
Auto Start
-Verify the resistance of the two
sensers See Table 12
-Check Voltage sequence of the Power
board, see wiring diagram for
Auto Start applicable sequence. Verify voltage
sequence at line side of unit terminal
block. See wiring diagram
* Check rotary switch, make sure it is
on the right position according to the
unit model, Reference Table 7
5 Auto
* Check system operating pressures
Starts in 1
* Check voltage supply at the
Hour
compressor terminals, must be with in
the +/- 10% voltage tolerance of the
compressor nameplate.