Carrier WEATHER MASTER P3 Specifications

CXM CONTROLSCXM Digital Heat Pump ControllerApplication, Operation & Maintenance97B0003N12Rev.: 03 January, 2011CXM Electronic Controls Features

10WATER-SOURCE HEAT PUMPSCXM Unit ControlRev.: 03 January, 2011Table 3: Replacement Thermistor FP1, FP2 Part NumbersTable 2: 1% Sensor Calibration Poi

11THE SMART SOLUTION FOR ENERGY EFFICIENCYCXM Unit ControlRev.: 03 January, 2011Table 4: Nominal Resistance at Various TemperaturesTemp (°C)Temp (°F)

12WATER-SOURCE HEAT PUMPSCXM Unit ControlRev.: 03 January, 2011General - CXM board troubleshooting in general is best summarized as simply verifying i

13THE SMART SOLUTION FOR ENERGY EFFICIENCYCXM Unit ControlRev.: 03 January, 2011See "Doesnot operatein clg"See "Onlycompruns"Start

14WATER-SOURCE HEAT PUMPSCXM Unit ControlRev.: 03 January, 2011CXM Wiring Diagram

15THE SMART SOLUTION FOR ENERGY EFFICIENCYCXM Unit ControlRev.: 03 January, 2011Functional Troubleshooting� CAUTION! �CAUTION! Do not restart units w

16WATER-SOURCE HEAT PUMPSCXM Unit ControlRev.: 03 January, 2011Unit Short CyclesX X Dirty air lter Check and clean air lter.X X Unit in "test m

17THE SMART SOLUTION FOR ENERGY EFFICIENCYCXM Unit ControlRev.: 03 January, 2011Performance Troubleshooting Htg Clg Possible Cause SolutionInsufcient

18WATER-SOURCE HEAT PUMPSCXM Unit ControlRev.: 03 January, 2011Notes:

19THE SMART SOLUTION FOR ENERGY EFFICIENCYCXM Unit ControlRev.: 03 January, 2011Notes:

2WATER-SOURCE HEAT PUMPSCXM Unit ControlRev.: 03 January, 2011This Page Intentionally Left Blank

20WATER-SOURCE HEAT PUMPSCXM Unit ControlRev.: 03 January, 2011Revision HistoryDate: Item: Action:01/03/11 Format - All Pages Updated06/11/10 Format -

3THE SMART SOLUTION FOR ENERGY EFFICIENCYCXM Unit ControlRev.: 03 January, 2011CXM Electronic Controls Features ComparisonBasic Features CXM CXM-LonCX

4WATER-SOURCE HEAT PUMPSCXM Unit ControlRev.: 03 January, 2011CXM OverviewThe CXM electronic control is a microprocessor based heat pump controller th

5THE SMART SOLUTION FOR ENERGY EFFICIENCYCXM Unit ControlRev.: 03 January, 2011CXM Physical Dimensions & Layout Use 4 Mounting Screws: #6 sheet m

6WATER-SOURCE HEAT PUMPSCXM Unit ControlRev.: 03 January, 2011 Description of Operation LED AlarmNormal ModeON OpenNormal Mode w/UPS WarningONCycle (C

7THE SMART SOLUTION FOR ENERGY EFFICIENCYCXM Unit ControlRev.: 03 January, 2011NOTE: Some CXM controls only have a 2 position DIP switch package. If t

8WATER-SOURCE HEAT PUMPSCXM Unit ControlRev.: 03 January, 2011Air Coil Low Temperature Cut-Out Limit (FP2) - The control will recognize an FP2 fault,

9THE SMART SOLUTION FOR ENERGY EFFICIENCYCXM Unit ControlRev.: 03 January, 2011Table 1a: Fault Description TableHeating Stage 1 - To enter Heating St