ClimateMaster Tranquility Digital DXM2 User Manual

DIGITAL Geothermal
Heat Pumps
TE/TZ/TES/TEP
97B0601N01
Rev.: 3/10/15
Tranquility
®
Digital (DXM2)
Troubleshooting Guide
Table of Contents
Introduction 2
Troubleshooting Flow Chart 3-9
Flow Chart Reference Symbols and Diagrams 10
Contactor Chart 12
Verifying Pump Feedback Signal 12
Removing Powerhead on Modulating Valve 13-14
Checking Compressors 15-16
Reversing Valve Touch Test Chart 17
Performance Troubleshooting 17-18
Functional Troubleshooting 20-22
Typical Split Water-to-Air Troubleshooting Form 23
Typical Water Source Refrigeration Circuit 24
(Heating Cycle)
Unit Operating Conditions 25
Basic Refrigeration Summary 26
Refrigeration Troubleshooting 27-28
Auxiliary Heat Check 29
Checking Pump Output 29
Compressor Contactor Voltage Check 30
Check CCH for 24 Volts 30
Verifying Contactor 30
Verifying Capacitor 31
Checking Pump Power Cord 31
Replacing Variable-Speed Pump Power Head 32
Verifying Power at Molded Plug 32
for Compressor
Verifying Antifreeze 33
Second Stage Verication 34
Verifying 24V at Reversing Valve 35
Checking Reversing Valve at DXM2 35
A0-2 Jumper 36
Checking for Power at DXM2 36
Verifying DC Voltage on DXM2 Board 37
for Modulating Valve Check
TXV Bulb Test 38
Verifying Dipswitch Position 39
Replacing High Pressure Water Switch 39
Verifying a Thermistor 40-41
Turning Breaker on in Panel or Aux Heat Control 42
Static Pressure Check 42
Locating Tstat Version and DXM2 Version 43
UltraCheck EZ
™
Motor Diagnostic Tool 43
Checking Dipswitches on DXM2 44
Magnet Test to Shift Reversing Valve 44
Checking Blower Line Voltage 45
Modulating Valve Loses Conguration 45
Hard Reset of Thermostat 46
Units Having LT1 Lockouts In Heating 47
Electrical—Power Wiring 48
LT2 Sensor Location for Non-TAH Air Handlers 49
Air Coil Connection 49
Lineset Diameters and Charge Information 49
Connection to Non-Communicating thermostat and
AXM communicating control in TAH Air Handler 50
Connection to Non-Communicating thermostat
and non-communicating Air Handler/Furnace 50
Denitions of Conditions 51-52
DXM2 Board Layout and Dipswitches 53
AXM Board Layout and Dipswitches 54
DXM2 Controls 55-58
Typical Wiring Diagrams 59-61
ATC32U02 Thermostat Screens and Set Up 62-68
Revision History 72

ClimateMaster Tranquility Digital DXM2 Specifications

General

Brand	ClimateMaster
Model	Tranquility Digital DXM2
Category	Heat Pump
Language	English