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

© 2017 Emerson Climate Technologies, Inc.
32
AE5-1377 R3
Code
Character
1
Code
Character
2
Fault Type
Trip to Set Point
Control Board
Actions
Auto
Resets
Possible Error and Solution
4
4
Discharge Gas
Overheat
Discharge
Temperatures over
270°F
-Stop the Unit
-Display DLT trip on
diagnostic
-Auto start the unit
after 3 minutes
-Lockout unit if 6 trips
within 1 hour
5 Auto
Starts in 1
hour
-Check system operations, for example
condensing pressures, return gas
temperatures, envelope operations etc.
Verify operations and correct the
situation
4
5
High Pressure
Trip
-Contact open at 435
psig ±22psig
-Contact Close at
348 psig ±22psig
-Stop the Unit
-Display HP trip on
diagnostic
-Auto start the unit
after 3 minutes
-Lockout unit if 6 trips
within 1 hour
-Display HP lockout on
diagnostic
5 Auto
Starts in 1
Hour
-Verify condenser fan operation,
excessive air recirculation, excessive
ambient temperatures, incorrect
envelope operations
-Verify system component operations
5
3
Over Current
Set based on
Compressor
-Stop the Unit
-Display over current
trip on diagnostic
-Lockout unit if 6 trips
in less than 12 hour
-Display over current
lockout on diagnostic
Lockout
* Check rotary switch, make sure it is
on the right position according to the
unit model, Reference Table 7
* Check system operating pressures
* Check voltage supply at the
compressor terminals, must be with in
the +/- 10% voltage tolerance of the
compressor nameplate.
5
4
Discharge Gas
Overheat
(XJAM
Models)
Discharge
Temperatures over
270°F
-Stop the Unit
-Display DLT trip on
diagnostic
-Lockout unit if 6 trips
within 1 hour
-Display DLT overheat
lockout on diagnostic
Lockout
-Check system operations, for example
condensing pressures, return gas
temperatures, envelope operations etc.
Verify operations and correct the
situation
5
5
High Pressure
Trip
-Contact open at 435
psig ±22psig
-Contact Close at
348 psig ±22psig
-Stop the Unit
-Display HP trip on
diagnostic
-Lockout unit if 6 trips
within 1 hour
-Display HP lockout on
diagnostic
Lockout
-Verify condenser fan operation,
excessive air recirculation, excessive
ambient temperatures, incorrect
envelope operation
-Verify system component operations