Specifications

39
© 2012 Emerson Climate Technologies, Inc.
Printed in the U.S.A.
AE8-1368 R2
Unloader Open
Unplug the
connector to the
unloader coil
Is the coil resistance
greater than 120 ohms?
(nominal coil resistance 6
Ω)
Replace the
unloader coil
Is the coil getting
approximately 24 volts AC
across it?
With the unloader
output plugged in,
force the unloader
stage “off” to
energize the
circuit. Measure
voltage across the
coil.
Suspect intermittent open
circuit in harness
Yes
No
Yes
Harness failure or
control module
relay output
failure.
No
The “open” unloader coil detection is based
on a low current flow (<200 mA) through the
unloader coil. This feature is disabled for the
Demand Cooling solenoid coil
6.18