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Code 9 – Low Voltage
The module will flash nine times if the module supply
voltage drops below 17VAC for 2 seconds. The
module will prevent the compressor from starting until
adequate voltage is established.
Code 10 – Over-Current Protection
When the current at the PROT terminal is greater than
2A for 40ms, the module will flash a Code 10. The red
LED will flash 10 times with the yellow LED remaining
off. This event will cause a lockout of the compressor
and indicates that the module is mis-wired or the
contactor coil is shorted to ground.
NOTICE
Code 10 is not specified on the module label.
Resetting Alert Codes
When the CoreSense Diagnostics module has detected
a series of adverse conditions that have caused it to
lockout the compressor, and after the issue has been
resolved, it is necessary to manually reset the module
in order to clear the present alert code.
The primary way of clearing the code and resetting
the ALERT or TRIP/LOCK is to cycle the power to the
module by disengaging the COMMON (C) Terminal.
This will not clear the seven day operating history
contained in the module memory. It will only clear the
present ALERT or TRIP/LOCK and allow for normal
operation.
Figure 1
Wires Pulled Through Module
© 2015 Emerson Climate Technologies
SERVICE
WARNING
Always disconnect and lockout the power supply
before beginning electrical troubleshooting.
Module History Download
The CoreSense Diagnostics module is capable of
communicating with a personal computer, tablet, or
laptop, via Emerson Climate Technologies computer
software interface (HVACR Fault Finder PC Edition)
and USB connection (TTL-232R-5V-WE), in order to
download and store fault history and module operation
time. This information can be used to help diagnose and
review data from troubled systems in the field. HVACR
Fault Finder PC Edition kit (9989-0099-01) with software
and cable. For more information, please contact your
Emerson Climate Technologies Application Engineer.
Warranty Information
Emerson Climate Technologies, Inc. warrants its
diagnostic module to be free from defects in materials
and workmanship under normal use for a period of one
year from the date of purchase or twenty months from
manufacture, whichever comes first. During this period,
Emerson Climate Technologies, Inc. will replace any
defective diagnostic module without charge.
For more information on product warranty please visit
EmersonClimate.com
Support
For more information visit EmersonClimate.com,
or contact Emerson Climate Technologies, Inc. at 1-888-
EMR-9950.
6
AE8-1385 R1
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