Lochinvar 400 - 801 service manual Knight XL display, Navigation Dial

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Service Manual

1Service (continued)

The Knight XL display

NAVIGATION DIAL

The information on the bottom of the display shows the functions of the two SELECT keys (on either corner), and the NAVIGATION dial (in the center):

MENU = Left SELECT Key

SETPOINTS = NAVIGATION Dial - Pressing Down

SHDN = Right SELECT Key

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Contents Models 400 Contents Handling ceramic fiber materials Please read before proceedingNiosh stated First Aid When servicing boiler Troubleshooting What is in this manual?Service MaintenanceNear boiler piping ServiceNavigation Dial Knight XL displayLOW Voltage Connection Board Control inputsControl outputs Smart Control ModuleHow the control module operates Access modesGeneral Operation How the boiler operatesOperation Display From previous page Sequence of Operation Button Screen Operation Display Status Display panel menu accessDisplay panel parameter access General Parameter tableSettings Reset Notification Software Version Temperature units C / FViewable and changeable control parameters Date and TimeData Logging Temperature SettingsFunctions DHW Settings Outdoor Reset Anti-Cycling BMS Thermostat Input Active / Inactive SH Ramp DelayControl modes Controlling SensorMinimum On/Off Time Cascade OffsetCirculation pumps Service Notification Service technician Maintenance Maintenance and annual startupOwner maintenance Maintenance Check boiler relief valve Flue vent system and air pipingCheck water system Check expansion tankInspect ignition and flame sense electrodes Check ignition ground wiringCheck all boiler wiring Check control settingsModel Kit Part Component Number Description Check flame signalCleaning boiler heat exchanger Review with ownerCheck the following TroubleshootingBefore troubleshooting Check control module fusesUnit Does Not No DisplayNo Burner OperationResistance Temperature Checking temperature sensorsTemperature Resistance Wire Color R/BK and Y Wire Color G and YDHW Pump NoisyNo Pump Boiler Pump System PumpFlow Switch/LWCOFlame Fail Ign Anti-cyclingFan Low Auto ResetFlame Sequence High LimitFan Speed High GV/RelayFail Fan HighHigh Flue Temp HighDelta T High Outlet TempRem Ctrl Flt Service BlkParameters Progr Write EEProm Watch Dog ErrorNo Error Stored Low 24 vacGas Supply Pressure Combustion Analysis ProcedureGas Valve Adjustment Or ObstructionModel Gas valve adjustment procedureModels 601 Page