ClimateMaster AG series Troubleshooting Guide

Residential Packaged DIGITAL Geothermal Heat Pumps 97B0601N01Rev.: 4/3/14Tranquility® Digital (DXM2) Troubleshooting GuideTable of ContentsIntroductio

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201410Geothermal Heat Pump SystemsReference Symbols and Diagramsfor F

11Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Verifying Pump Feedback SignalContactor ChartA-AA-AContactorclo

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201412Geothermal Heat Pump SystemsRemoving Powerhead on ¾-Inch Modula

13Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Removing Powerhead on 1-Inch Modulating ValveA-CA-C2) The 1-in

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201414Geothermal Heat Pump SystemsChecking CompressorsA-DA-DCompresso

15Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014An Alternative Way of Checking CompressorsA-DA-DMegohm Values o

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201416Geothermal Heat Pump SystemsReversing Valve Touch Test Chart423

17Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Symptom Htg Clg Possible Cause Solution0UZ\MÄJPLU[*HWHJP[`Not

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201418Geothermal Heat Pump SystemsPerformance TroubleshootingSymptom

19Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Functional TroubleshootingFault Htg Clg Possible Cause Solution

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 20142Geothermal Heat Pump SystemsTroubleshooting ClimateMaster Tranqu

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201420Geothermal Heat Pump SystemsOver/Under Voltage - Code 7X X Unde

21Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014No Fault Code ShownX X No compressor operation :LL6US`-HU6W

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201422Geothermal Heat Pump SystemsCommissioning Worksheet: Check Test

23Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Commissioning Worksheet: Check Test and StartA-GA-GContinued fr

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201424Geothermal Heat Pump SystemsTypical Water Source Refrigeration

25Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Expansion Valve System• Feeds refrigerant based upon the measu

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201426Geothermal Heat Pump SystemsRefrigeration TroubleshootingA-HA-H

27Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Determining Sub-Cooling:1. Measure the temperature of the liqui

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201428Geothermal Heat Pump SystemsAuxiliary Heat CheckA-IA-IChecking

29Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Compressor Contactor Voltage CheckA-KA-KCheck CCH for 24 volts

3Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Troubleshooting Flow ChartDid unitstart?Check that unit voltage

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201430Geothermal Heat Pump SystemsChecking Pump Power CordFirst, remo

31Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Replacing Variable-Speed Pump Power Head1) You can remove powe

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201432Geothermal Heat Pump SystemsVerifying AntifreezeA-RA-R-50°F -40

33Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Second Stage VerificationA-SA-S2) When rectifi er is removed, ve

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201434Geothermal Heat Pump SystemsA-UA-UCompRelay24VdcEH1EH2P6JW3CORV

35Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014A0-2 JumperA-VA-VChecking for Power at DXM2A-WA-WP1AlarmRelayOY

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201436Geothermal Heat Pump SystemsVerifying DC Voltage on DXM2 Board

37Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Suction pressure increases when warmed and decreases when bulb

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201438Geothermal Heat Pump SystemsVerifying Dipswitch PositionB-AB-AO

39Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 20141) Clamp on digital to read ref next to LT1 to verify sensorVe

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 20144Geothermal Heat Pump Systems See Section 3.2 on page 56.Troubles

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201440Geothermal Heat Pump SystemsNominal resistance at various tempe

41Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014ONOFFONOFF1234P1 L1L2L3L4P2197 - 254 VTurning Breaker on in Pan

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201442Geothermal Heat Pump SystemsLocating Thermostat Version and DXM

43Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Magnet Test to Shift Reversing Valve into CoolingB-HB-HChecking

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201444Geothermal Heat Pump SystemsChecking Blower Line VoltageB-IB-IF

45Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Hard Reset of ThermostatB-KB-KUse a thermostat wire to connect

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201446Geothermal Heat Pump SystemsUnits Having LT1 Lockouts In Heatin

47Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Definitions of ConditionsCONTACTOR OPEN - NOT BUZZINGWhen the c

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201448Geothermal Heat Pump SystemsDefinitions of ConditionsMOTOR WIND

49Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014DXM2 Board Layout and DipswitchesP1Alarm RelayComp RelayOY1Y2WG

5Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014NoUse Emerson EZ Tool to troubleshoot motor and verify motor or

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201450Geothermal Heat Pump SystemsDXM2 ControlsFIELD SELECTABLE INPUT

51Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Table 2: Accessory Relay 2 Confi gurationTable 1: Accessory Rela

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201452Geothermal Heat Pump Systems CAUTION! CAUTION! Do not restar

53Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014DXM2 ControlsUPS feature warns when the heat pump is operating

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201454Geothermal Heat Pump SystemsDXM2 Wiring Diagram with Internal F

55Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014DXM2 Wiring Diagram with Motorized Modulating Water Valve - 96B

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201456Geothermal Heat Pump SystemsATC32U02 Thermostat Screens and Set

57Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014ATC32U02 Thermostat Screens and Set UpAIRFLOW SELECTION

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201458Geothermal Heat Pump SystemsATC32U02 Thermostat Screens and Set

59Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014ATC32U02 Thermostat Screens and Set UpVARIABLE SPD INTERNALPUMP

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 20146Geothermal Heat Pump SystemsReplace defective wiringNoVerify tha

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201460Geothermal Heat Pump SystemsATC32U02 Thermostat Screens and Set

61Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014ATC32U02 Thermostat Screens and Set Up9.3 DIPSWITCH CONFIGURATI

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201462Geothermal Heat Pump SystemsATC32U02 Thermostat Screens and Set

63Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Notes:

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 201464Geothermal Heat Pump SystemsRMANUFACTURERCERTIFIEDTOARIASCOMPLY

7Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Verify whether the thermostat is confi gured for multi-stage oper

Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 20148Geothermal Heat Pump SystemsContinuedConfi gureNoSee Lockout Faul

9Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged UnitsRev.: 4 April, 2014Replace DXM2NoUnit runs but does not satisfyYes YesThe unit is r