Carrier 48LC Series Controls, Start-up, Operation And Troubleshooting

Also see for 48LC 05: Controls, Start-Up, Operation and Troubleshooting Service and maintenance instructions Service and maintenance instructions

Contents

Carrier 48LC Series Controls, Start-up, Operation And Troubleshooting Manual pdf 4 page image

4a48--- 9373Fig. 2 -- SystemVut -- Main Menu StructuresSystemVu Interface OperationUnits are shipped from the factory with the SystemVu interfaceFIOP, located in the main control box. (See Fig. 1.) In addition, theinterface has up and down arrow keys, BACK, ENTER, MENU,and TEST keys. These keys are used to navigate through thedifferent levels of the menu structure. All discussions and examplesin this document will be based on the SystemVu display except inthe Navigatort display section. See the Accessory NavigatorDisplay section starting on page 4 for further details and Table 2for the Navigator menu structure and usage.The six keys are used to navigate through the display structure,which is organized in a tiered menu structure. If the buttons havenot been used for a period, the display will default to a standbyscreen intended to provide a quick overall look at the system. Toshow the top--level display, press any key first to turn the displaybacklight on, and then press the MENU key. Then use the up anddown arrow keys to scroll through the top--level menus. These areshown in Fig. 2 and listed in Appendix A.When a specific menu or sub--menu is located, push the ENTERkey to enter the menu. Depending on the menu, there may beadditional tiers. Continue to use the up and down keys and theENTER key until the desired display item is found. At any time,the user can move back a menu level by pressing the BACK key.Once an item has been selected the display will flash showing theitem, followed by the item value and then followed by the itemunits (if any). Pressing the TEST button at any time will jump thedisplay to the test menu. Pressing the MENU button any time willjump the display to the main menu.Items in the Configuration and Service Test menus are passwordprotected. The display will prompt the enter password screen whenrequired. Use the ENTER, BACK, and arrow keys to enter the fourdigits of the password. The default user password is 1111.Pressing the BACK and ENTER keys simultaneously will show anexpanded text description screen on the display indicating the fullmeaning of each display point. To put the screen in standby, holddown the BACK key for 5 seconds.Some points can be forced from the SystemVut interface. To force avariable, follow the same process as editing a configurationparameter. A forced variable, regardless where the force has comefrom will be displayed with a lower case “f” following its value.For example, if ECON CMD POSITION is forced, the displayshows “80%f”, where the “f” is to signify a force on the point.Remove the force by selecting the point that is forced with the keyENTER and then pressing the up and down arrow keyssimultaneously. Pressing ENTER and BACK on a forced item willdisplay the expanded description for that item including the forcelevel that is currently applied. Depending on the type of unit(48LC or 50LC), factory--installed options and field--installedaccessories, some of the items in the various menus may not apply.Accessory Navigatort DisplayThe accessory hand-held Navigator display can be used with the48/50LC units. (See Fig. 3.) The Navigator display is plugged intothe LEN (local equipment network) port on either the SystemVudisplay or the Main Base Board (MBB).Navigator Display OperationThe Navigator display has up and down arrow keys, an ESCAPEkey and an ENTER key. These keys are used to navigate throughthe different levels of the display structure.The four keys are used to navigate through the display structure,which is organized in a tiered mode structure. If the buttons havenot been used for a period, the display will default to the AUTOVIEW display category as shown under the RUN STATUScategory. To show the top-level display, press the ESCAPE keyuntil a blank display is shown. Then use the up and down arrowkeys to scroll through the top-level categories. These are listed inAppendix C and will be indicated on the Navigator display by theLED next to each mode listed on the face of the display.Run StatusService TestTemperaturesPressuresSetpointsInputsOutputsConfigurationTime ClockOperating ModesAlarmsE N T E RE S CM O D EAlarm StatusTIMEEWTLWTSETP1 2 . 5 85 4 . 6 ° F4 4 . 1 ° F4 4 . 0 ° FN A V I G A T O RC o m f o r t L i n kC06321Fig. 3 -- Accessory Navigator DisplayWhen a specific mode or sub-mode is located, push the ENTER keyto enter the mode. Depending on the mode, there may be additionaltiers. Continue to use the up and down keys and the ENTER keysuntil the desired display item is found. At any time, the user can moveback a mode level by pressing the ESCAPE key. Once an item hasbeen selected the display will flash showing the item, followed by theitem value and then followed by the item units (if any).Items in the Configuration and Service Test modes are passwordprotected. The display will flash PASS and WORD when required.Use the ENTER and arrow keys to enter the four digits of thepassword. The default password is 1111.