Manuals / Lochinvar / Household Appliance / Water Heater

Lochinvar 150 - 800 service manual AW-SERRev H 4/10

Models: 150 - 800

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Revision Notes: Revision B (AW-SER-Rev B) reflects the addition of the Dungs information to the manual.

Revision C (ECO #C02407) reflects the addition of the air pressure switch, FIG. 3-1, removal of pocket pc references and changes made to the Circulation Pump section (page 15).

Revision D (ECO #C02545) reflects the addition of references to periodic cleaning of screens in vent terminations and safety shutoff testing and instructions.

Revision E (ECO #C02738) reflects the addition of the Gas Valve Adjustment Procedure for a 399 model on page 33.

Revision F (ECO #C03296) reflects updates made to the condensate trap image (FIG. 2-1) on page 17.

Revision G (ECO #C04150) reflects the addition of Models 600 - 800.

Revision H (ECO #C05457) reflects the new LWCO on the Control Inputs image on page 6 (#C04031), update the HEX cleaning procedure to reflect the new HEX cleaning kit (#R02634), and updates to the ceramic fiber warning.

AW-SER Rev H

4/10

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Image 36

Lochinvar 150 - 800 service manual AW-SERRev H 4/10

Contents

Models AW-SERRev HSave this manual for future reference Hazard definitions DANGERContents When servicing water heater Please read before proceedingHandling ceramic fiber materials Water heater operationWhat is in this manual? ServiceMaintenance Troubleshooting1Service The Armor water heater displaySMART SYSTEM CONTROL BOARD Control inputs1Service Control outputs SMART SYSTEM CONTROL BOARDCONNECTION BOARDGeneral Operation 1ServiceInstaller How the water heater operatesOPERATION DISPLAYSequence of operation Display panel menu access 1ServicePress 1 time to toggle menu listing Press 2 times to toggle menu listingDisplay panel parameter access BUTTONOPERATION DISPLAYParameter table 1ServiceViewable and changeable control parameters Temperature unitsNight setback temperature Show last 10 errors1Service E WHR settingsReset last 10 errors Service mode delayJ Service Notification DHW pump delayService notification in months Service notification running hours2Maintenance Maintenance and annual startup Service technicianOwner maintenance see the following pages for instructions2Maintenance continued Address reported problemsClean condensate trap Inspect water heater area2Maintenance Flue vent system and air pipingCheck water system Check expansion tankCheck ignition ground wiring Check all water heater wiringCheck control settings Perform start-upand checksCheck flame signal Cleaning heat exchangerReview with owner Oiled bearing circulators3Troubleshooting Before troubleshootingCheck control module fuses Check the followingFAULT CAUSECORRECTIVE ACTION 3Troubleshooting3Troubleshooting continued Checking temperature sensorsTemperature F Temperature F3Troubleshooting FAULTTable 3D Troubleshooting Chart - Noisy System CAUSEDESCRIPTION 3Troubleshooting continuedFAULT Flow Switch3Troubleshooting FAULTDESCRIPTION CORRECTIVE ACTION3Troubleshooting continued FAULTDESCRIPTION CORRECTIVE ACTION3Troubleshooting FAULTManual Reset DESCRIPTION3Troubleshooting continued FAULTDESCRIPTION CORRECTIVE ACTION3Troubleshooting FAULTDESCRIPTION CORRECTIVE ACTION3Troubleshooting continued FAULTService Blk Watch Dog ErrorCombustion Analysis Procedure POSSIBLE CAUSE3Troubleshooting Gas Valve AdjustmentGas valve adjustment procedure 3Troubleshooting continuedFigure 3-2 Gas Valve Adjustment Models Figure 3-3 Gas Valve Adjustment Model3Troubleshooting continued Figure 3-4 Gas Valve Adjustment ModelFigure 3-5 Gas Valve Adjustment Models ModelPage AW-SERRev H 4/10