Lochinvar 402, 2072 service manual Louver Proving, Tank Open, APS Open, APS Closed, Wrong ID Plug

Page 41

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

3 Troubleshooting (continued)

Table 3E (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Operator Interface

FAULT

DESCRIPTION

CORRECTIVE ACTION

 

 

 

Louver Proving

 

 

(Lockout will reset

 

 

automatically after

 

• Check function of remote devices.

5 minutes or may be

An optional remote proving switch is not

reset immediately once

 

condition has been

making.

• Check for loose or misplaced jumper if

corrected. Press the

 

proving switch is not installed.

RESET button on the

 

 

SMART SYSTEM display

 

 

to reset.)

 

 

 

 

 

 

Sensors equipped with an internal limit (such

• Check the tank temperature.

Tank Open

as the Lochinvar Squire® Indirect Tank), the

• Repair or replace the sensor wiring if damaged.

 

limit has opened due to temperature (195°F)

 

 

or the sensor has become disconnected.

• Replace the sensor if necessary.

 

 

 

 

 

APS Open

 

• Check air filter. Clean or replace as necessary.

(Lockout will reset

 

• Vent/air intake lengths exceed the maximum allowed

automatically after 5

 

minutes or may be

The air pressure switch did not make within

lengths.

reset immediately once

 

1 minute after the combustion air blower has

• Check for blockage or obstruction in vent/air inlet pipe

condition has been

corrected. Press the

been energized.

or at terminations.

 

RESET button on the

 

• Verify combustion air blower is operating. Replace if

SMART SYSTEM display

 

to reset.)

 

necessary.

 

 

 

APS Closed

 

 

(Lockout will reset

 

• Check for jumper on air pressure switch.

automatically after 5

 

minutes or may be

The SMART SYSTEM control sensed that

• Check for an unusually high negative draft in the vent

reset immediately once

the air pressure switch was closed before the

condition has been

combustion air blower was energized.

stack.

corrected. Press the

 

 

 

RESET button on the

 

 

SMART SYSTEM display

 

 

to reset.)

 

 

 

 

 

 

 

• Verify that ID plug is connected properly to connector

 

 

X5 on the control module.

 

 

• Verify that the wiring in the ID plug is not cut or

 

 

damaged and that the wiring connectors are seated

 

 

properly in the plug.

Wrong ID Plug

Control module ID plug does not match the

• Verify that the number on the ID label on the control

Accept Personality Plug parameter.

panel matches the number in the Accept Personality

 

Plug parameter. If not, replace the control module.

 

 

 

 

• When replacing control modules, verify that the

 

 

number in the Accept Personality Plug parameter

 

 

matches the number on the ID label (reference page

 

 

24 of this manual). If so, press the ENTER button on

 

 

the SMART SYSTEM display. If not, replace the

 

 

control module.

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Contents Copper-fin II/IIE Boiler and Water Heater Models 402 Contents Niosh stated First Aid Please read before proceedingHandling ceramic fiber materials Service What is in this manual?Maintenance TroubleshootingCopper-fin display ServiceControl inputs Control outputs How the appliance operates General OperationHow the control module operates Sequence of operationOUT 123.8F129 Sequence of operationHTR Postpurge Display panel menu access Display panel parameter access Only Parameter table a Boiler OperationAnti-cycle Time Anti Cycl Tm Parameter table B Water Heater Operation BMS Service Notification Pumps Viewable and changeable control parameters Temperature settingsFunctions Data loggingDHW settings Outdoor air reset boiler only Anti-cycling Control modes Cascade Building Management System BMSCirculation pumps Service NotificationService technician Maintenance Maintenance and annual startupOwner maintenance See the User’s Information Manual for instructionsMaintenance Inspect/replace hot surface igniter Check relief valveInspect/replace hot surface igniters Check control settings Check all wiringInspect and clean burner Perform start-up and checks2Adjusting air shutter 399,999 750,000 Btu/ hr Models Checking manifold gas pressure Adjusting combustion air pressurePressure Regulator Chamber Adjustment Manifold Oiled bearing circulators Inspect and clean the heat exchangerReview with owner Before troubleshooting TroubleshootingCheck control module fuses Check the followingNo Burner No DisplayOperation Unit DoesTemperature Resistance Checking temperature sensorsResistance Temperature No Pump NoisyOperation Boiler Pump System Pump DHW PumpAnti-cycling Flow SwitchFlame Sequence No Flame Ign ErrorHSI Current Low Flame CKTNo Flame Auto ResetRunning High LimitInlet Low Manual ResetSensor Open Sensor ShortedTank Open Louver ProvingAPS Open APS ClosedParameters Progr Temp O/ShootRem Ctrl Flt Watch Dog Error Service BlkNo Error Stored Low Voltage
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402, 2072 specifications

Lochinvar 2072,502 is an innovative and robust water-heating solution tailored for residential and commercial applications. This model represents a significant advancement in energy efficiency and performance, catering to the dynamic heating requirements of modern buildings.

One of the standout features of Lochinvar 2072,502 is its advanced thermal efficiency. With an impressive AFUE (Annual Fuel Utilization Efficiency) rating, the unit delivers exceptional heat output while minimizing energy consumption. This not only reduces utility bills for homeowners and businesses but also supports sustainability efforts by decreasing carbon footprints.

The Lochinvar 2072,502 incorporates cutting-edge technologies that set it apart in the market. It is equipped with advanced control systems that allow users to precisely manage heating outputs, ensuring optimal comfort while conserving energy. The user-friendly digital display provides real-time data, allowing for efficient monitoring and control.

Another significant characteristic of the Lochinvar 2072,502 is its robust stainless-steel construction. This feature enhances the unit's durability and longevity, ensuring reliable performance even in challenging conditions. The high-quality materials also contribute to maintaining consistent water temperatures, which is essential for both residential and commercial heating needs.

The Lochinvar 2072,502 operates silently, making it ideal for installations in areas where noise is a concern. Its compact design allows for flexible installation options, fitting seamlessly into various spaces, whether it’s a utility room, basement, or outdoor area.

Furthermore, the unit supports multiple venting options, accommodating different building architectures and layouts. This versatility makes it an ideal choice for new builds and retrofitting existing systems.

Maintenance is streamlined with the Lochinvar 2072,502, as it features a self-diagnostics system that simplifies troubleshooting. Regular service check-ups are made easier with accessible components, allowing technicians to perform maintenance tasks efficiently.

In summary, the Lochinvar 2072,502 stands out for its high efficiency, advanced technology, durability, and flexible installation options. It is an ideal choice for those seeking a reliable and technologically advanced water-heating solution that meets the challenges of contemporary heating demands while promoting energy savings and environmental responsibility.
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