20 | ConfigurationInstaller and user reference guide120RWEYQ8~14T9Y1BVRV IV water-cooled system air conditioner4P452191-1B – 2020.10Example:Checking the content of parameter [1‑10] (to know how many indoor units areconnected to the system).[A‑B]=C in this case defined as: A=1; B=10; C=the value we want to know/monitor:1 Make sure the 7‑segment display indication is in the default situation (normaloperation).2 Push BS1 one time.Result: Mode 1 is accessed:3 Push BS2 10 times.Result: Mode 1 setting 10 is addressed:4 Push BS3 one time; the value which is returned (depending on the actual fieldsituation), is the amount of indoor units which are connected to the system.Result: Mode 1 setting 10 is addressed and selected, return value ismonitored information5 To quit mode 1, push BS1 one time.20.2.6 To use mode 2The master unit should be used to input field settings in mode 2.Mode 2 is used to set field settings of the outdoor unit and system.What HowChanging and accessing thesetting in mode 2Once mode 2 is selected (push BS1 for morethan 5 seconds), you can select the wantedsetting. It is done by pushing BS2.Accessing the selected setting's value is done bypushing BS3 1 time.To quit and return to the initialstatusPress BS1.Changing the value of theselected setting in mode 2▪ Once mode 2 is selected (push BS1 for morethan 5 seconds) you can select the wantedsetting. It is done by pushing BS2.▪ Accessing the selected setting's value is doneby pushing BS3 1 time.▪ Now BS2 is used to select the required valueof the selected setting.▪ When the required value is selected, you candefine the change of value by pushing BS3 1time.▪ Press BS3 again to start operation according tothe chosen value.Example:Checking the content of parameter [2‑12].[A‑B]=C in this case defined as: A=2; B=12; C=the value we want to know/change1 Make sure the 7‑segment display indication is as during normal operation(default situation when shipped from factory).