Specifications

46
© 2012 Emerson Climate Technologies, Inc.
Printed in the U.S.A.
AE8-1368 R2
Normal Running Low Oil Pressure
Followed By
Low Oil Pressure Lockout
Is oil present in the
sight glass?
Loose harness
connection in front box.
If all connections are
tight, replace Module
Yes
Does the Module
display change to
“Normal Running”?
Verify proper engagement
of connector onto sensor
Yes
No
Yes
Disconnect harness at the
sensor. Is the oil pump sensor
“open” while the compressor
runs?
Measure oil pump pressure. Is
the differential pressure relative
to the crankcase (suction) greater
than 7– 9 psi?
Compressor Issue.
Possible Causes: Faulty oil
pump. Clogged strainer
screen. Worn bearings.
Faulty Sensor.
Check for missing
o-ring or clogged
sensor screen
No
Yes
No
Install jumper across
the harness connector
pins
Resolve reservoir oil
supply problem or oil
level control setting
issues
No
Is the harness connector at
the oil pump pressure sensor
fully engaged?
Yes
No Reconnect
6.25