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A C D U 0 3   C o m m u n i c a t i n g   S e r v i c e   To o l

R e v. :     N o v e m b e r   3 ,   2 0 1 7

4.4.3 Confi guration Conditions

Displays the status of all dipswitch settings that were 
recorded at the time the fault occurred.

4.4.4 Possible 

Causes

 

Displays possible causes as to why the fault occurred

4.5 

CLEAR FAULT HISTORY

Clear Fault History will clear all fault codes stored in the 
thermostat as well as the fault history in any connected 
communicating controls (DXM2/AXM).

FAULT   CONFG   CONDITIONS

LT1    LOW   WATER   TEMP

HEAT   1     11:11 AM   11/14

        S1           S2              S3

1      ON      1    ON       1    ON

2      ON      2    ON       2    OFF

3      ON      3    ON       3    OFF

4      ON      4    ON       4    OFF

5      ON      5    ON

6      ON      6    ON       LT1    WELL

7      ON      7    ON       LT2    WELL

8      ON      8    ON

 PREVIOUS                                        

POSSIBLE FAULT CAUSES

LOW  WATER  COIL  TEMP

LOW  WATER  TEMP - HTG

LOW  WATER  FLOW - HTG

LOW  REFRIG  CHARGE - HTG

INCORRECT  LT1  SETTING

BAD  LT1  THERMISTOR

 PREVIOUS                                        

Summary of Contents for ACDU03

Page 1: ...orking properly and or may void the warranty on both the thermostat and the equipment Section Title Page 1 0 Connection 3 2 0 Menu Structure 4 3 0 System Configuration 4 3 1 Airflow Selection 4 3 2 Option Selection 5 3 3 Unit Configuration 5 3 4 Pump Configuration 6 3 5 Valve Configuration 6 3 6 Multi Unit Configuration 7 4 0 Service Mode 8 4 1 Manual Operation 8 4 2 Control Diagnostics 8 4 3 Dips...

Page 2: ...This page was intentionally left blank ...

Page 3: ...nit by operating it manually performing control diagnostics viewing dip switch configurations or by viewing fault history and operating conditions when a fault occurred The Service Tool connects to the DXM2 board with a 4 Wire Connector as shown below P1 Alarm O Y1 Y2 W G C R AL1 R C R NSB AL2 JW1 P2 P5 B Gnd A 24V Service tool connection DXM2 Board DXM2 DXM2 Board Board 1 0 Connection WARNING WAR...

Page 4: ...tem has no blower Note 2 The Pump Configuration menu section 3 4 will not be present if the connected communicating control is configured for No Loop Configuration OTHER Note 3 The Valve Configuration menu section 3 5 will not be present if the connected communicating control is configured for No Loop Configuration OTHER 3 1 AIRFLOW SELECTION Adjust the airflow settings for each system operating m...

Page 5: ...efore restarting NOTE 2 If multiple units are connected to one thermostat refer to section 3 6 for unit selection 3 3 UNIT CONFIGURATION Adjust the Unit Configuration settings including Heat Pump Family Heat Pump Size Blower Type and Loop Configuration using the up down arrow buttons Press the center button to select each item Heat Pump Family default stored in control valid range TE TY TES TEP TR...

Page 6: ...ol press use down arrow to select Fixed and press to save Default stored in control Valid range 15 90 in 1 increments Heating Stage 1 Cooling Stage 1 Heating Stage 2 Cooling Stage 2 If Pump Configuration is set to VS PUMP PARALLEL valid range changes to 50 90 in 1 increments 3 5 VALVE CONFIGURATION Configure temperature differentials at the thermostat for vFlow units with a motorized modulating va...

Page 7: ... to the ATC thermostat or connected to one another in series as shown by the figure below 3 6 1 MULTI UNIT AIRFLOW SELECTION In section 3 1 when an installer selects Airflow Selection from the System Configuration menu the installer may choose the unit to configure by the last 4 digits of its serial number from the following screen 3 6 2 MULTI UNIT OPTION SELECTION In section 3 2 when an installer...

Page 8: ... pump at the thermostat Navigate between diagnostic screens using the left right arrow buttons NOTE The Pump Status will not be present if the connected communicating control DXM2 is not configured for Pump section 3 4 SERVICE MODE MANUAL OPERATION CONTROL DIAGNOSTICS DIPSWITCH CONFIG FAULT HISTORY CLEAR FAULT HISTORY SELECT OPTION PREVIOUS SELECT MANUAL OPERATING MODE Y1 COMM OUTPUT OFF Y2 COMM O...

Page 9: ...TSTAT 4 ON RV O THERMOSTAT 5 ON DEHUMID OFF 6 ON EH2 AUX HEAT 7 ON BOILERLESS 8 ON SEE DXM2 AOM PREVIOUS NEXT CONTROL CONFIGURATION DIPSWITCH S2 1 ON ACCESSORY 1 2 ON ACCESSORY 2 3 ON 4 ON ACCESSORY 2 5 ON ACTIVE W COMP 6 ON 7 ON H DEHUM INPUT 8 ON FACTORY SETTING PREVIOUS NEXT CONTROL CONFIGURATION DIPSWITCH S3 1 ON FACTORY SETTING 2 OFF HWG TEST OFF 3 OFF HWG SP 125 4 OFF HWG DISABLED JW3 LT1 SE...

Page 10: ...TIONS FAULT I O CONDITIONS FAULT CONFIG COND FAULT POSSIBLE CAUSES PREVIOUS SELECT FAULT TEMPERATURE CONDITIONS LT1 LOW WATER TEMP HEAT 1 11 11 AM 11 14 LT1 TEMP 28 1 LT2 TEMP 97 3 HOT WATER EWT 121 5 COMP DISCHARGE 157 7 LEAVING AIR 92 7 LEAVING WATER 34 9 ENTERING WATER 42 1 CONTROL VOLTAGE 26 4 PREVIOUS FAULT I O CONDITIONS LT1 LOW WATER TEMP HEAT 1 11 11 AM 11 14 TSTAT SAFETY OUTPT CONV COMM H...

Page 11: ...ult History will clear all fault codes stored in the thermostat as well as the fault history in any connected communicating controls DXM2 AXM FAULT CONFG CONDITIONS LT1 LOW WATER TEMP HEAT 1 11 11 AM 11 14 S1 S2 S3 1 ON 1 ON 1 ON 2 ON 2 ON 2 OFF 3 ON 3 ON 3 OFF 4 ON 4 ON 4 OFF 5 ON 5 ON 6 ON 6 ON LT1 WELL 7 ON 7 ON LT2 WELL 8 ON 8 ON PREVIOUS POSSIBLE FAULT CAUSES LOW WATER COIL TEMP LOW WATER TEM...

Page 12: ...ined herein are not express warran ties and do not form the basis of any bargain between the parties but are merely ClimateMaster s opinion or commendation of its products ClimateMaster Inc 2012 97B0106N01 7300 S W 44th Street Oklahoma City OK 73179 Phone 405 745 6000 Fax 405 745 6058 climatemaster com Rev Janua ry 2 3 2 0 1 9 Date Page Description 23 Jan 19 3 4 Update harness and service tool par...

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