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Emerson Comfort Alert User Manual

Emerson Comfort Alert User Manual

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  Summary of Contents for Emerson Comfort Alert

  • Page 1 User’s Manual Questions or Comments? Call 1-888-923-2323...
  • Page 2 A flashing LED indicator communicates the ALERT code and guides the service technician more quickly and accurately to the root cause of a problem. The Comfort Alert module is also compatible with all Emerson branded thermostats of the 1F9X and 1F8X families that offer diagnostic “L” terminal connection. For better protection, the 1F9X/1F8X “CA”...
  • Page 3 Four #8 or (#10 for part # -0032 and -0033) self drilling or sheet metal screws, at least ½” length, are required for installation of Comfort Alert. The maximum screw torque is 20 in.-lbs. Locate Comfort Alert near the compressor contactor (wire routing for compressor run, common and start wires will be easier in this position).
  • Page 4 Part Numbers: 543-0010-00, 943-0010-00, 543-0012-00, 943-0012-00 A. 1.81 in (46 mm) D. 3.15 in (80mm) B. 2.44 in (62 mm) E. 2.44 in (62 mm) C. 1.43 in (36 mm) Figure 2 Part Numbers: 543-0010-01, 943-0010-01 A. 1.81 in (46 mm) D.
  • Page 5 The scroll compressor’s run (R), common (C) and start (S) wires are routed through the holes in Comfort Alert marked “R,” “C” and “S.” The common (C) wire need not be routed through the module for it to operate properly.
  • Page 6 Note: 24VAC power wiring is not required for 2 wire Comfort Alert, which is powered by the demand (Y terminal). Even if the 24VAC power supply is available it should not be connected. Refer to Figure 7. Thermostat Demand Wiring Comfort Alert requires a thermostat demand signal to operate properly.
  • Page 7 Solid Line shows field installed wiring. LPCO HTCO Dashed line shows thermostat demand wiring in system without HTCO, LPCO. HPCO Comfort Alert Diagnostics Module 543-0010-00 Indoor Unit Terminal Block Single Stage Indoor Thermostat Schematic Abbreviation Description HTCO High Temperature Cut Out Switch...
  • Page 8 LPCO HTCO Dashed line shows thermostat demand wiring in system without HTCO, LPCO and Defrost. HPCO Comfort Alert Diagnostics Module 543-0032-00 Indoor Unit Terminal Block Single Stage Indoor Thermostat Schematic Abbreviation Description HTCO High Temperature Cut Out Switch...
  • Page 9 On select White-Rodgers thermostats, an icon on the thermostat display will flash at the same rate as the Comfort Alert yellow Alert LED. An advanced option on these thermostats is to lock out the compressor when certain Alert codes are detected indicating impending compressor damage.
  • Page 10 Comfort Alert. While Comfort Alert is off, reattach the wire to the Y terminal. Reapply power to compressor and 24VAC to Comfort Alert, the yellow Alert LED will flash the pre- vious code 8 for 1 minute and then turn off. If the yellow LED does not function as de- scribed, refer to Table 1 to verify the wiring.
  • Page 11 LED Troubleshooting Information Status LED Status LED Description Status LED Troubleshooting Information Green “POWER” Module has power Supply voltage is present at module terminals 1.Compressor protector is open • Check for high head pressure • Check compressor supply voltage Thermostat demand 2.Outdoor unit power disconnect is open Red “TRIP”...
  • Page 12 LED Troubleshooting Information Continued Status LED Status LED Description Status LED Troubleshooting Information 1. Thermostat demand signal is intermittent Short Cycling Yellow “ALERT” 2. Time delay relay or control board defective Compressor is Flash Code 3 3. If high pressure switch present go to Flash Code 2 running only briefly information 1.
  • Page 13 NOTE: The correct Comfort Alert model must be used for the application (refer to the Application, Benefits and Product Specifications section on page 3). If the wrong model is installed, or Comfort alert is wired incorrectly, the ALERT Flash Codes for system faults may function incorrectly: Comfort Alert may indicate system faults that are not present or fail to indicate system faults that are present.
  • Page 14 Patent 6, 615, 594 and Additional Patents Pending 2006ECT-54 R7 (06/09) Emerson, Copeland, Copeland Scroll, Comfort Alert. UltraTech and White Rodgers are the trademarks of Emerson Electric Co. or one of its affiliated companies. © 2006 Emerson Climate Technolgies, Inc. All rights reserved. Printed in the USA.