3
4.2.10 - Description of the CONFIGURATION menu ..................................................................................................... 24
4.2.11 - Description of the ALARMS menu ..................................................................................................................... 25
4.2.12 - Description of the ALARMS HISTORY menu................................................................................................... 26
4.2.13 - Description of the OPERATING LOG menu ...................................................................................................... 26
4.2.14 - Default user interface display .............................................................................................................................. 26
4.3 - Summary interface........................................................................................................................................................ 27
4.3.1 - General ................................................................................................................................................................... 27
4.3.2 - Description of the LEDs ........................................................................................................................................ 27
4.3.3 - The push buttons .................................................................................................................................................... 27
5 - PRO-DIALOG PLUS CONTROL OPERATION .......................................................................................................... 28
5.1 - Start/stop control .......................................................................................................................................................... 28
5.2 - Heating/cooling selection ............................................................................................................................................. 28
5.3 - Evaporator water pump control .................................................................................................................................... 28
5.4 - Condenser water pump control..................................................................................................................................... 28
5.5 - Control point................................................................................................................................................................. 28
5.5.1 - Active setpoint ....................................................................................................................................................... 28
5.5.2 - Reset....................................................................................................................................................................... 28
5.6 - Demand limit ................................................................................................................................................................ 28
5.7 - Capacity control........................................................................................................................................................... 29
5.8 - Determining the lead circuit ......................................................................................................................................... 29
5.9 - Circuit loading sequence .............................................................................................................................................. 29
5.10 - Compressor start-up sequence in one circuit ................................................................................................................ 29
5.11 - Controlling the EXV..................................................................................................................................................... 29
5.12 - Motor cooling valve control ......................................................................................................................................... 30
5.13 - Head pressure control on air-cooled units .................................................................................................................... 30
5.14 - Head pressure control on water-cooled units ............................................................................................................... 30
5.15 - Head pressure setpoint selection .................................................................................................................................. 30
5.16 - High pressure load shedding function .......................................................................................................................... 30
5.17 - Start-up procedure - prelubrication .............................................................................................................................. 30
5.18 - Master/slave assembly .................................................................................................................................................. 30
5.18.1 - General ................................................................................................................................................................. 30
5.18.2 - Balancing running times between master and slave ............................................................................................ 31
5.18.3 - Staring the follower unit ...................................................................................................................................... 31
5.18.4 - Abnormal operating conditions ........................................................................................................................... 31
5.19 - Controlling a Pro-Dialog unit with a System Manager ................................................................................................ 31
5.20 - Optional heat reclaim module ...................................................................................................................................... 31
6 - DIAGNOSTICS - TROUBLESHOOTING ..................................................................................................................... 32
6.1 - General ......................................................................................................................................................................... 32
6.2 - Displaying alarms ......................................................................................................................................................... 32
6.3 - Resetting alarms ........................................................................................................................................................... 32
6.4 - Description of the alarm codes ..................................................................................................................................... 32