Manuals / Lochinvar / Household Appliance / Water Heater

Lochinvar 151 - 801 service manual Models, AWII-SERRev A, Save this manual for future reference

Models: 151 - 801

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AWII-SER Rev A

Service Manual

Models: 151 - 801

WARNING

This manual must only be used by a qualified heating installer / service technician. Read all instructions, including this manual and the Armor Water Heater Installation and Operation Manual, before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death, or substantial property damage.

Save this manual for future reference.

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Lochinvar 151 - 801 service manual Models, AWII-SERRev A, Save this manual for future reference

Contents

AWII-SERRev A ModelsSave this manual for future reference DANGER Hazard definitionsContents Please read before proceeding When servicing water heaterHandling ceramic fiber materials Water heater operationService What is in this manual?Maintenance TroubleshootingThe Armor water heater display 1ServiceNAVIGATION DIAL PRESS OR TURN RESET KEY RIGHT SELECT KEYLOW VOLTAGE Control inputsCONNECTION BOARDLOW VOLTAGE CONNECTION BOARD Control outputs1Service continued SMART SYSTEM CONTROL BOARDInstaller Access modesGeneral Operation How the water heater operatesDISPLAY OPERATIONTable 1A Sequence of operation 1Service continuedBUTTON Display panel menu accessSCREEN OPERATIONBUTTON Display panel parameter accessSCREEN OPERATIONInstaller Access User AccessParameter table MenuInstaller Access User AccessParameter table MenuDisplay Timeout Temperature units C / FViewable and changeable control parameters A GeneralReset last 10 errors D DHW SettingsService Mode Delay B Data LoggingF Control modes ModBus T/O TimeoutBMS Thermostat Input Active / Inactive BMS Active / InactiveDHW Pump Anti-SeizeDelay DHW Pump DelayBMS Type Power / Set Point Minimum On/Off TimeService Notification in Months I Service NotificationService Notification Running Time Service Notification CyclesService technician 2Maintenance Maintenance and annual startupOwner maintenance Table 2A Service and Maintenance SchedulesAddress reported problems 2MaintenanceClean condensate trap Inspect water heater areaFlue vent system and air piping 2Maintenance continuedCheck water system Check expansion tankCheck all water heater wiring Check ignition ground wiringCheck control settings Figure 2-2 Burner AssemblyCleaning heat exchanger Check flame signalTable 2B Heat Exchanger Cleaning Kits Review with ownerBefore troubleshooting 3TroubleshootingCheck control module fuses Check the followingFAULT 3Troubleshooting continuedTable 3A Troubleshooting Chart - No Display CAUSETemperature F Checking temperature sensorsWire Color - R/BK and Y Wire Color - G and YNoisy Table 3E Troubleshooting Chart - Noisy SystemNo Pump Relief ValveDESCRIPTION Flow Switch3Troubleshooting FAULTFlame Fail Ign Anti-cycling3Troubleshooting continued FAULTRunning No Flame3Troubleshooting FAULTManual Reset Auto ResetFlame Sequence High LimitFan Speed Low Fan LowGV/Relay FailLouver Proving Sensor ShortedFlue Temp High Delta T HighOutlet Temp High Service BlkRem Ctrl Flt 3TroubleshootingNo Error Stored Watch Dog ErrorFatal Error Low 24 VACGas Valve Adjustment Combustion Analysis ProcedurePOSSIBLE CAUSE Table 3G Flue ProductsFigure 3-2 Gas Valve Adjustment Models Gas valve adjustment procedureFigure 3-3 Gas Valve Adjustment Model ModelsFigure 3-5 Gas Valve Adjustment Models Figure 3-4 Gas Valve Adjustment ModelModels 3TroubleshootingPage AWII-SERRev A 8/10