Lochinvar 402 - 2072, 502 - 2072 service manual Display panel parameter access

Page 12

Copper-fin II/IIE Boiler, Water Heater and Pool Service Manual

1 Service

Display panel parameter access

Table 1C_This is a typical example of accessing a parameter, shown for parameter K2, SH pump delay

Cascade

BMS

12

Image 12

Contents

Copper-fin II/IIE Boiler, Water Heater Pool Heater Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid What is in this manual? ServiceMaintenance TroubleshootingService Copper-fin displayControl inputs Control outputs General Operation How the appliance operates How the control module operates Sequence of operationSequence of operation OUT 123.8F129HTR Postpurge Display panel menu access Display panel parameter access Datalogging Functions Settingsdhw Resetoutdoor Parameter tableAnti-cycle Delay Yes Temperature settings boiler only Viewable and changeable control parametersData logging FunctionsDHW settings Outdoor air reset boiler only Anti-cycling Control modes Building Management System BMS CascadeService Notification Circulation pumpsMaintenance Maintenance and annual startup Service technicianOwner maintenance See the User’s Information Manual for instructionsMaintenance Check relief valve Inspect/replace hot surface igniter Inspect/replace hot surface ignitersCheck all wiring Check control settingsInspect and clean burner Perform start-up and checksAccess to the burner will require the following steps Checking combustion air pressureAdjusting combustion air pressure Checking manifold gas pressureValve Fitting Control Knob Inspect and clean the heat exchanger Review with ownerOiled bearing circulators Troubleshooting Before troubleshootingCheck control module fuses Check the followingNo Display No BurnerOperation Unit Does NotChecking temperature sensors Resistance TemperatureTemperature Resistance Noisy No PumpBoiler Pump System Pump DHW PumpFlow Switch Flame SequenceAnti-cycling Error No Flame IgnHSI Current Low Flame CKTAuto Reset No FlameRunning High LimitManual Reset Inlet LowSensor Open Sensor ShortedLouver Proving Tank OpenAPS Open APS ClosedTemp O/Shoot Rem Ctrl FltService Blk ParametersProgr Low VoltageWatch Dog Error No Error StoredWrite EEProm Program EEProm

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