Lochinvar 81-286 Flue Sensor Fault, Flue Temp Diff, Flue Temp Limit, Fatal Error, Memory Error

Page 43

Service Manual

3 Troubleshooting (continued)

Table 3-4(continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Boiler Interface

FAULT

DESCRIPTION

 

 

CORRECTIVE ACTION

 

 

 

 

 

 

• Check

wiring to sensor. Make sure wiring is

Flue Sensor Fault

 

 

connected and not damaged.

Reconnect / repair

 

 

wiring if necessary.

 

(will require a manual reset

 

 

 

The control reads the flue sensor as open

 

 

 

 

once the condition has been

• Measure the resistance of the sensor and compare

corrected. Press the RESET

or shorted.

 

to the resistance in Table 3-2D on page 35 of this

button on the SMART

 

 

 

 

manual. Replace the sensor if necessary.

SYSTEM display to reset.)

 

 

 

 

 

 

 

 

 

•

Replace control module.

 

 

 

 

 

 

 

• Check

wiring to sensor. Make sure wiring is

 

 

 

connected and not damaged. Reconnect / repair

Flue Temp Diff

 

 

wiring if necessary.

 

 

• Measure the resistance of the sensor and compare to

(will require a manual reset

The control module reads an excessive

once the condition has been

 

the resistance in Table 3-2D

on page 35 of this

corrected. Press the RESET

temperature difference between the two

 

manual. Replace sensor if necessary.

sensors.

 

button on the SMART

 

•

Restore control parameter defaults from optional PC

SYSTEM display to reset.)

 

 

 

 

software.

 

 

 

•

Replace control module.

 

 

 

 

 

 

• Inspect the heat exchanger. Reference page 32 of

 

 

 

this manual for the procedure on how to clean the flue

 

 

 

side of the heat exchanger.

 

Flue Temp Limit

 

• Inspect

the flue sensor and

associated wiring.

(will require a manual reset

 

The stack temperature has exceeded the

 

Measure the resistance of the flue sensor and

once the condition has been

 

 

compare to Table 3-2D on page 35 of this manual.

corrected. Press the RESET Flue Temp Limit set parameters.

 

 

Replace the sensor if necessary.

button on the SMART

 

 

 

 

 

 

 

SYSTEM display to reset.)

 

• Verify that the vent/air intake

pipes are properly

 

 

 

 

 

installed and that there are no obstructions.

 

 

• Replace the main control board.

 

 

 

• Restore the parameter defaults from the optional PC

Fatal Error

The control module has detected parameter

software.

settings that are out of range.

 

 

• Replace control module.

 

 

Memory Error

A lockout occurs at the same time as a power outage.

• Reset control module.

43

Page 42 Page 44
Image 43
Page 42 Page 44
Contents Models 81 Contents Handling ceramic fiber materials Please read before proceedingNiosh stated First Aid When servicing boiler Troubleshooting What is in this manual?Service MaintenanceNear boiler piping ServiceNavigation Dial Knight boiler displayLOW Voltage Connection Board Control inputsControl outputs Smart Control ModuleHow the control module operates Access modesGeneral Operation How the boiler operatesOperation Display From previous page Sequence of Operation Button Screen Operation Display Status Display panel menu accessButton Screen Status Operation Display Display panel parameter accessParameter table Description See User Access Installer Access Display ModifyMenu DHW Settings Resetoutdoor Description See User Access Installer Access Display ModifyBMS Service Notification Software Version Temperature units C / FViewable and changeable control parameters Time and DateData Logging Temperature SettingsFunctions DHW Settings Outdoor Reset Anti-Cycling BMS Thermostat Input Ramp SettingsControl modes Controlling SensorMinimum On/Off Time Cascade OffsetCirculation pumps Service Notification Service technician Maintenance Maintenance and annual startupInstructions Maintenance Check boiler relief valve Flue vent system and air pipingCheck water system Check expansion tankCheck flame signal Check ignition ground wiringCheck all boiler wiring Check control settingsKit Part Component Number Description Cleaning boiler heat exchangerReview with owner Oiled bearing circulatorsCheck the following TroubleshootingBefore troubleshooting Check control module fusesUnit Does No DisplayNo Burner OperationTemperature Resistance Temperature Resistance Checking temperature sensorsResistance Temperature DHW Pump NoisyNo Pump Boiler Pump System PumpTroubleshooting Anti-cycling Temp SwOpen Applies to the 286 Model OnlyFlame Sequence Cont’dOutlet Mrhl Outlet ArhlGV/Relay Fan Low/HighFan Speed Low HighInlet Sensor FaultSensor Shorted Louver ProvingFlue Temp Diff Flue Sensor FaultFatal Error Memory ErrorDelta T High Flue Temp HighOutlet Temp Rem Ctrl Flt Service BlkParameters Progr Combustion Analysis Procedure Gas Supply Pressure Gas valve adjustment procedureGas Valve Adjustment Or Obstruction
Related manuals
Manual 16 pages 58.01 Kb

81-286 specifications

Lochinvar 81-286 is a highly efficient and innovative heating solution that represents the latest advancements in boiler technology. This model, part of Lochinvar's prestigious line-up, is designed for commercial applications, delivering superior performance while emphasizing energy efficiency and user-friendly operation.

One of the standout features of the Lochinvar 81-286 is its robust construction. Built with high-quality materials, the unit is engineered for durability and reliability, ensuring long-term operation with minimal maintenance. Its compact design allows for versatility in installation, making it suitable for various building layouts and configurations.

The boiler's primary technology is its advanced condensing capability, which optimizes heat transfer and reduces energy consumption. By efficiently using the heat generated during combustion, the 81-286 can achieve higher thermal efficiencies, often surpassing traditional systems. This results in lower operating costs and reduced greenhouse gas emissions, aligning with the growing demand for sustainable energy solutions in commercial buildings.

Lochinvar incorporates intelligent control systems into the 81-286, featuring user-friendly interfaces that facilitate straightforward programming and monitoring. These control systems enable precise regulation of temperature and pressure, ensuring optimal operation while providing real-time feedback that aids in troubleshooting and maintenance. Users can enjoy the convenience of remote monitoring, enhancing the overall user experience.

Another key characteristic of the Lochinvar 81-286 is its capacity range. The model is available in various sizes, allowing it to meet the specific demands of different facilities, from small businesses to large industrial applications. This flexibility makes it a top choice for contractors and engineers seeking reliable heating solutions that cater to diverse needs.

In addition, the Lochinvar 81-286 boasts exceptional safety features, including built-in safeguards that protect against overheating and pressure surges. These aspects ensure that the unit operates within safe parameters, providing peace of mind for facility managers and operators.

In summary, the Lochinvar 81-286 combines durability, efficiency, and advanced technology, making it an ideal solution for commercial heating needs. With its innovative condensing design, intelligent controls, and safety features, this boiler stands out as a reliable choice for those seeking sustainable and effective heating solutions. Its versatility and performance make it a key player in today’s ever-evolving energy landscape.
Top Page Image Contents