7
Figure 5. CoreSense
TM
Diagnostics Module
Common Wire
Reset Button
Trip / Lock
(Red LED)
Run / Alert
(Yellow LED)
Table 3. LED Diagnostics for CoreSense
TM
Diagnostics Module
ALERT CODE ALERT CONDITION LOCK LEVEL LOCK INDICATION
Normal Run
Solid Yellow
Normal operation, no trip N/A N/A
Code1
Yellow Flash 1
Long run time. Compressor is on running for more than 18 hours.
(Code1 is disabled in Heat Pump Mode)
N/A N/A
Code2
Yellow Flash 2
Compressor (pressure) trip. Compressor runs for 12 sec to 15 min
followed by a compressor trip condition lasting for more than 7 min.
4x consecutive
Red: Flash2
Yellow: Off
Code3
Yellow Flash 3
Pressure switch cycling. Compressor runs for 12 sec to 15 min followed
by a compressor trip lasting between 35 sec to 7 min.
4x consecutive
or 10x total
Red: Flash3
Yellow: Off
Code4
Yellow Flash 4
Locked rotor. Compressor trips within a compressor run time of 12 sec
and does not start within 35 sec.
10x consecutive
Red: Flash4
Yellow: Off
Code5
Yellow Flash 5
Compressor (moderate run) trip. Compressor runs for 15 min to 18 hrs
followed by a compressor trip lasting longer than 7 min.
4x consecutive
or 10x total
Red: Flash5
Yellow: Off
Code9
Red Flash 9
The current to the PROT terminal is greater than 2A.
Current >2A
for 40ms
Red: Flash9
Yellow: Off
Trip
Solid Red
Demand is present, but compressor is not running. N/A N/A
Resetting Alert Codes
When the CoreSense
TM
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 is to press the reset button located on the module.
NOTE: Pressing the reset will require a pin or a mini
electronics screwdriver. This button must be pressed and
held for a minimum of one second for the module to be
reset. Pressing the reset button clears the immediate lock
code and the seven day operating history. It will not clear
the permanent module history. In the case of the three-
wire module, the codes can be reset or cleared by cycling
power to the module. This can be done by disengaging
the Common (C) terminal. This will not clear the seven
day operating history.
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