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Introduction
™
CoreSense
Diagnostics is a breakthrough innovation
for troubleshooting residential air-conditioning and heat
pump systems. The CoreSense Diagnostics module
is easily installed in the unit electrical panel near the
compressor contactor. By using the compressor as a
sensor, CoreSense Diagnostics helps the service
technician more accurately troubleshoot system and
compressor fault conditions.
CoreSense Diagnostics also provides compressor
and system protection through its proprietary lockout
feature. Depending on the severity and frequency of
the fault that caused the trip condition, the CoreSense
Diagnostics module can lockout the compressor
contactor to prevent damage to the compressor and
system components. Less severe fault conditions
resulting in an occasional trip will not result in a lockout
condition.
Flashing LEDs communicate ALERT and LOCK
codes to the service technician.
CoreSense Diagnostics Part Numbers
Version
OEM Part Number
Two Wire AC:
571-0066-00
Three Wire HP:
571-0067-00
Application Restrictions and Types
The CoreSense Diagnostics module is designed
and qualified for use with ZP*K5 and ZR*K5 single-
phase Copeland Scroll
CoreSense Diagnostics is not designed for use with
Copeland Scroll Variable Speed or Ultratech
scroll compressors.
The CoreSense Diagnostics module is available in
two-wire and three-wire configurations. The two-wire
module (571-0066-00) uses the demand signal (Y)
to power the module. The two-wire module is used
primarily in split system cooling applications where 24
volts may not be available at the outdoor unit to power
the module. The three-wire module (571-0067-00) is
powered continuously by (R) and (C) and is ideal for
all packaged unit applications, and for split systems
applications where (R) and (C) are available at the
outdoor unit. See Figures 1 and 2.
Product Specifications
Operating Temp: - 40° to 150°F (- 40° to 65°C)
Storage Temp: - 60° to 175°F (- 49° to 80°C)
Supply Voltage: 19 to 28VAC , 48 to 62Hz
© 2015 Emerson Climate Technologies
Service P/N
971-0066-00
971-0067-00
™
fixed speed compressors.
™
branded
Working amperage for module: 2 to 30A
Maximum Power Consumption: 1.5 VA
Installation
Two #8 or #10 self tapping or sheet metal screws are
required for installation of the module. The maximum
mounting screw torque is 20 in.lbs. The module can be
mounted in any orientation and LEDs should be visible
for ease of service.
The COMMON lead wire for the compressor must be
routed through the current sensing hollow opening at
the top of the module.
NOTICE
The top cover of the module is not designed to be
removed.
The current sensor is capable of measuring a minimum
of 2 amps. If the compressor current is less than
2 amps during normal operation, then loop the
compressor COMMON lead wire through the
current sensing port two times.
CAUTION
The terminals of the module are in close
proximity to each other and care must be used to
prevent terminal to terminal shorting. Shorting the
terminals may destroy the module and/or the
transformer used to power the module.
For module dimensions and terminal identification,
refer to Figure 4.
Terminal Description
The terminals for the CoreSense Diagnostics module
are ¼" spade terminals.
• COMMON (C)
The 24 volt common terminal for module power.
• DEMAND (Y)
The demand terminal requires a 24VAC signal
measured with respect to the COMMON (C)
terminal when there is a call for heating or
cooling.
• PROTECTION (PROT)
The protection terminal is internally wired to the
COMMON terminal through a normally closed
set of contacts.
• POWER (R)
This terminal is only on the 571-0067-00 three-
wire version. The module requires a constant
24VAC supply power to this terminal.
4
AE8-1379 R2
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