ClimateMaster Tranquility Digital DXM2 Troubleshooting Manual
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ClimateMaster Tranquility Digital DXM2 Troubleshooting Manual

ClimateMaster Tranquility Digital DXM2 Troubleshooting Manual

Digital geothermal heat pumps te/tz/tes/tep
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(Heating Cycle)
for Compressor
Tranquility
Troubleshooting Guide

Table of Contents

2
3-9
10
12
12
13-14
15-16
17
17-18
20-22
23
24
25
26
27-28
29
29
30
30
30
AXM communicating control in TAH Air Handler
31
Connection to Non-Communicating thermostat
31
and non-communicating Air Handler/Furnace
32
32
33
34
35
35
36
36
Digital (DXM2)
®
DIGITAL Geothermal
TE/TZ/TES/TEP
97B0601N01
Rev.: 3/10/15
™
Heat Pumps
37
38
39
39
40-41
42
42
43
43
44
44
45
45
46
47
48
49
49
49
50
50
51-52
53
54
55-58
59-61
62-68
72

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Summary of Contents for ClimateMaster Tranquility Digital DXM2

  • Page 1: Table Of Contents

    Tranquility Digital (DXM2) ® Troubleshooting Guide DIGITAL Geothermal Heat Pumps TE/TZ/TES/TEP 97B0601N01 Rev.: 3/10/15 Table of Contents Introduction Verifying DC Voltage on DXM2 Board for Modulating Valve Check Troubleshooting Flow Chart TXV Bulb Test Flow Chart Reference Symbols and Diagrams Verifying Dipswitch Position Contactor Chart Replacing High Pressure Water Switch...

  • Page 2: Introduction

    Set up and diagnostics are made easier using the communicating thermostat (ATC32) or the communicating service tool (ACDU02). You must have ATC32 or ACDU02 to properly work on ClimateMaster Tranquility Digital units that use the DXM2 ®...

  • Page 3: Troubleshooting Flow Chart

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Troubleshooting Flow Chart If it is still not Verify that...
  • Page 4 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Troubleshooting Flow Chart Continued Replace...
  • Page 5 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Troubleshooting Flow Chart Continued Verify that...
  • Page 6 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Troubleshooting Flow Chart Continued Check your...
  • Page 7 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Troubleshooting Flow Chart Continued Unit does...
  • Page 8 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Troubleshooting Flow Chart Continued The unit...
  • Page 9 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Troubleshooting Flow Chart Continued Verify the Water Side...

  • Page 10: Flow Chart Reference Symbols And Diagrams

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Notes: Specific to Splits When using TES/TEP with communicating Air Handlers (and not using ATC32U02 Thermostat using a 24 volt...
  • Page 11 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Reference Symbols and Diagrams for Flow Chart w w w.

  • Page 12: Contactor Chart

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Contactor Chart Contactor Chart Motor does...

  • Page 13: Removing Powerhead On Modulating Valve

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Removing Powerhead on ¾-Inch Modulating Valve On 3/4”...
  • Page 14 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Removing Powerhead on 1-Inch Modulating Valve Rotate dial to ‘1’...

  • Page 15: Checking Compressors

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Checking Compressors Compressor Ohms Table Compressor...

  • Page 16: Checking Compressors

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 An Alternative Way of Checking Compressors Megohm Values of Copeland Compressors There are many factors that affect megohm readings...

  • Page 17: Reversing Valve Touch Test Chart

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Reversing Valve Touch Test Chart Suction Line to Compressor...

  • Page 18: Performance Troubleshooting

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Performance Troubleshooting Symptom Htg Clg Possible Cause...
  • Page 19 Check for dirty air filter and clean or replace Low Suction Reduced air flow Check fan motor operation and airflow restrictions Pressure in cooling Too high of external static - check static vs blower table Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ®...

  • Page 20: Functional Troubleshooting

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Functional Troubleshooting Fault Htg Clg Possible Cause...
  • Page 21 Air temperature out of range LT2 Fault - Code 5 design parameters that IOM specifies. Low Air Temperature Improper low temperature setting Normal airside applications will require. Only setting for (30°F vs 10°F) packaged units is 30º. Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ®...
  • Page 22 Check fan motor operation and airflow restrictions Low Air Coil or ClimaDry Too high of external static - check static vs blower table Pressure Fault Too much cold vent air - bring entering air temp within (ClimaDry) Code 11 Air temperature out of range design parameters Tranquility D i g i t a l ( D X M 2 ) —...

  • Page 23: Typical Split Water-To-Air Troubleshooting Form

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Typical Split Water-to-Air Troubleshooting Form Split Water-to-Air RP930...

  • Page 24: Typical Water Source Refrigeration Circuit

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Typical Water Source Refrigeration Circuit (Heating Cycle) Water-to-Water (Heating Only) RP932...

  • Page 25: Unit Operating Conditions

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Unit Operating Conditions TZ Coax Water Pressure Drop TE Coax Water Pressure Drop...

  • Page 26: Basic Refrigeration Summary

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Basic Refrigeration Summary Expansion Valve System •...

  • Page 27: Refrigeration Troubleshooting

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Refrigeration Troubleshooting Measuring Superheat and Subcooling Superheat and subcooling are a good indication of refrigeration efficiency.

  • Page 28: Refrigeration Troubleshooting

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Refrigeration Troubleshooting Superheat = Suction Line Temperature - Suction Saturation Temperature...

  • Page 29: Auxiliary Heat Check

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Auxiliary Heat Check 24 volts DC First stage auxiliary heat...

  • Page 30: Compressor Contactor Voltage Check

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Compressor Contactor Voltage Check 18-31.5 Volts AC...

  • Page 31: Verifying Capacitor

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Verifying Capacitor First, remove the power to the unit and allow 5-10 minutes for the capacitor to...

  • Page 32: Replacing Variable-Speed Pump Power Head

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Replacing Variable-Speed Pump Power Head 1) You can remove power head from motor with # 25 Torx driver if feedback is out of range.

  • Page 33: Verifying Antifreeze

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Verifying Antifreeze Place hydrometer in antifreeze.

  • Page 34: Second Stage Verification

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Second Stage Verification Remove When rectifier is...

  • Page 35: Verifying 24V At Reversing Valve

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Verifying 24V at Reversing Valve Verify 24V at reversing valve when calling for cooling To check the solenoid’s magnetic pull, begin by pulling solenoid off of reversing valve.

  • Page 36: A0-2 Jumper

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 A0-2 Jumper For Mod Valve For Pump...

  • Page 37: Verifying Dc Voltage On Dxm2 Board

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Verifying DC Voltage on DXM2 Board for Modulating Valve Check A-X 1 2 3 4 5 6 7 8...

  • Page 38: Txv Bulb Test

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 TXV Bulb Test Pressure Gauge Suction pressure increases when...

  • Page 39: Verifying Dipswitch Position

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Verifying Dipswitch Position 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8...

  • Page 40: Verifying A Thermistor

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Verifying a Thermistor Clamp on digital to read ref next to LT1 to verify sensor Remove this Molex plug to check resistance of the FP1/...

  • Page 41: Verifying A Thermistor

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Verifying a Thermistor Thermistor Temperature Sensors –...

  • Page 42: Turning Breaker On In Panel Or Aux Heat Control

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Turning Breaker on in Panel or Auxiliary Heat Control 197 - 254 V...

  • Page 43: Locating Tstat Version And Dxm2 Version

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Locating Thermostat Version and DXM2 Version INSTALLER SETTINGS THERMOSTAT CONFIG...

  • Page 44: Checking Dipswitches On Dxm2

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Checking Dipswitches on DXM2 Verify that dipswitch number 1 is in the ‘On’...

  • Page 45: Checking Blower Line Voltage

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Checking Blower Line Voltage Note: Be sure to turn power off...

  • Page 46: Hard Reset Of Thermostat

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Hard Reset of Thermostat Use a thermostat wire to connect TP2 and TP3 on the thermostat board.

  • Page 47: Units Having Lt1 Lockouts In Heating

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Units Having LT1 Lockouts In Heating with Modulating Valve (Open Loop) B-L When running unit in Y1 and Y2, if valve position moves slightly below 50% open, there is a greater impact on GPM.

  • Page 48: Electrical-Power Wiring

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Electrical—Power Wiring 9-15V DC 9-15V DC...

  • Page 49: Lt2 Sensor Location For Non-Tah Air Handlers

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 LT2 Sensor Location for Non-TAH Air Handlers Do not install LT2 sensor...

  • Page 50: Connection To Non-Communicating Thermostat And

    24Vac Common Dehumidification (ATP32U04 Only) Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® Fault LED R e v.

  • Page 51: Definitions Of Conditions

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Definitions of Conditions CONTACTOR OPEN - NOT BUZZING replace overload if it is located in the electrical box.
  • Page 52 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Definitions of Conditions MOTOR WINDINGS OVERHEATED When the compressor is drawing normal amps and becomes...

  • Page 53: Dxm2 Board Layout And Dipswitches

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 DXM2 Board Layout and Dipswitches Water Coil Low Temp...

  • Page 54: Axm Board Layout And Dipswitches

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 AXM Board Layout and Dipswitches Condensate Sensor...

  • Page 55: Dxm2 Controls

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 DXM2 Controls FIELD SELECTABLE INPUTS JUMPERS (Set at Factory)
  • Page 56 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 DXM2 Controls On = Normal Fan Mode.
  • Page 57 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 DXM2 Controls Fault Code 3: Loss of Charge Switch –...
  • Page 58 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 DXM2 Controls Fault Code 8: Unit Performance Sentinel –...

  • Page 59: Typical Wiring Diagrams

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Typical Wiring Diagram—96B0005N55 w w w.
  • Page 60 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 DXM2 Wiring Diagram with Internal Flow Controller - 96B0005N60 This diagram includes typical wiring details but is not applicable to all units.
  • Page 61 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 DXM2 Wiring Diagram with Motorized Modulating Water Valve - 96B0005N62 This diagram includes typical wiring details but is not applicable to all units.

  • Page 62: Atc32U02 Thermostat Screens And Set Up

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 ATC32U02 Thermostat Screens and Set Up 2.0 Installer Menu Settings 2.2.1...

  • Page 63: System Configuration

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 ATC32U02 Thermostat Screens and Set Up 3.0 System Configuration AIRFLOW SELECTION...
  • Page 64 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 ATC32U02 Thermostat Screens and Set Up �...
  • Page 65 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 ATC32U02 Thermostat Screens and Set Up VARIABLE SPD INTERNAL PUMP CONFIGURATION...

  • Page 66: Service Mode

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 ATC32U02 Thermostat Screens and Set Up 9.0 Service Mode CONTROL DIAGNOSTICS...
  • Page 67 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 ATC32U02 Thermostat Screens and Set Up DIPSWITCH CONFIGURATION FAULT HISTORY...

  • Page 68: Atc32U02 Thermostat Screens And Set Up

    Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 ATC32U02 Thermostat Screens and Set Up 9.4.2 Flow Conditions 9.4.5 Possible Causes...
  • Page 69 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 Notes: w w w.
  • Page 70 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 G e o t h e r m a l H e a t i n g a n d C o o l i n g...
  • Page 71 Tranquility D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e ® R e v. : 1 0 M a r c h , 2 0 1 5 w w w.

  • Page 72: Revision History

    97B0601N01 ClimateMaster works continually to improve its products. As a result, the design and specifications of each product at the time for order may be changed without notice and may not be as described herein. Please contact ClimateMaster’s Customer Service Department at 1-405-745-6000 for specific information on the current design and specifications.

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