Lochinvar 151 - 801 service manual

Contents

Main Service Manual Models: Hazard definitions Contents DANGER WARNING CAUTION CAUTION NOTICE Please read before proceeding Handling ceramic fiber materials REMOVAL OF COMBUSTION CHAMBER LINING NIOSH stated First Aid. When servicing water heater What is in this manual? Service The Armor water heater display Control module inputs Control module outputs The Armor water heater display LOW VOLTAGE CONNECTION BOARD SMART SYSTEM CONTROL BOARD Control inputs LOW VOLTAGE CONNECTION BOARD SMART SYSTEM CONTROL BOARD Control outputs General Operation How the water heater operates Sequence of operation Access modes Saving parameter s OPERATION DISPLAY Display panel menu access Display panel parameter access Parameter table E A Page User Access Installer Access Display Modify Display Modify Parameter table Viewable and changeable control parameters A: General NOTICE E: Anti-Cycling B: Data Logging C: Functions D: DHW Settings F: Control modes Minimum On/Off Time G: Circulation pumps H: BMS I: Service Notification Maintenance and annual startup Service technician Monthly Daily ANNUAL START-UP Address reported problems Inspect water heater area Check all piping for leaks Inspect water heater interior Clean condensate trap 2 Flue vent system and air piping Check water system Check expansion tank Check water heater relief valve Inspect ignition and flame sense electrodes Check ignition ground wiring Check all water heater wiring Check control settings Perform start-up and checks 2 Check flame signal Review with owner Oiled bearing circulators Check Delta T Before troubleshooting: Check the following: Check control module fuses FAULT CAUSE CORRECTIVE ACTION Checking temperature sensors S1a S1b S3a S3b Table 3E Troubleshooting Chart - Noisy System FAULT CAUSE CORRECTIVE ACTION Noisy Operation No Pump Operation Relief Valve Opening Table 3F Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface Gas Pressure SW Flow Switch Blocked Drain SW APS Open Anti-cycling Flame Fail Ign No Flame Running Flame Sequence Auto Reset High Limit Manual Reset High Limit Fan Low OR Fan Speed Low GV/Relay Fail Fan High OR Fan Speed High Sensor Open Sensor Shorted Flue Temp High Louver Proving Delta T High Outlet T emp High Rem Ctrl Flt Ser vice Blk Page Combustion Analysis Procedure POSSIBLE CAUSE CORRECTIVE ACTION Gas valve adjustment procedure Models 151 - 286 Model 400 Model 501 Models 601 - 801