Specifications

50
© 2012 Emerson Climate Technologies, Inc.
Printed in the U.S.A.
AE8-1368 R2
Discharge Temperature Trip / Lockout
6.29
Is the head temperature probe reading
properly (with an ohmmeter across the
probe’s connecotrs), or based upon the
display or controller readout? Reference
the resistance table
Does this
compressor have
liquid injection?
See Section 6.32b
Does the temperature reading
reach high levels immediately
after compressor start-up (before
the head becomes hot)?
Is the system
operating with
excessive
superheat?
Is the discharge
temperature higher than
like models in the same
suction group?
Is the compressor
tripping / locking out
below the proper trip
setting (see table)?
Corrupted
configuration value in
the control module.
Contact Emerson
Tech Support for help
in resetting the value
in the control module
Investigate system
issues leading to
high temperature
(e.g. high head
pressure)
Diagnose cause of
compressor
inefficiency (e.g.
gasket or reed
failure, head fan
failure, etc)
NO
Replace the head
temperature
probe
No
Pinched or
grounded
harness or probe
lead
Yes
Yes
No
Adjust the
system
Yes
No
Yes
No
NO
DLT Trip Settings
4D / 6D 310
o
F
2D / 3D 280
o
F
Temperature
60F
70F
80F
90F
Resistance
141K ohms
107K Ohms
82K Ohms
66K Ohms
Yes
Yes