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Lochinvar 81-286 service manual Sensor Shorted, Louver Proving, Inlet Sensor, Fault, Outlet Sensor

Models: 81-286

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Service Manual

3 Troubleshooting

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

FAULT

DESCRIPTION

CORRECTIVE ACTION

 

 

 

Sensor Shorted

 

• Check the sensors and their associated wiring.

 

Repair or replace the sensor or wiring if damaged.

(will require a manual reset

Either the inlet water or outlet water

• Measure the resistance of the sensors and compare

once the condition has been

corrected. Press the RESET

temperature sensor has been shorted.

the resistance to the tables on page 35 of this

button on the SMART

 

manual.

 

SYSTEM display to reset.)

 

• Replace the sensor if necessary.

 

 

 

 

 

 

 

 

Louver Proving

 

 

 

Sw

 

• Check function of remote devices.

(will require a manual reset

An optional remote proving switch is not

 

 

once the condition has been

making.

• Check for loose or misplaced

jumper if auxiliary

corrected. Press the RESET

 

proving switch is not installed.

 

button on the SMART

 

 

 

 

 

SYSTEM display to reset.)

 

 

 

 

 

 

Inlet Sensor

 

• Check wiring to sensor. Make sure wiring is

 

connected and not damaged.

Reconnect / repair

Fault

 

wiring if necessary.

 

(will require a manual reset

The control reads the inlet sensor as open

• Measure the resistance of the sensor and compare to

once the condition has been

corrected. Press the RESET

or shorted.

the resistance in Table 3-2A on page 35 of this manual.

button on the SMART

 

Replace sensor if necessary.

 

SYSTEM display to reset.)

 

• Replace control module.

 

 

 

 

 

 

 

Outlet Sensor

 

• Check wiring to sensor. Make sure wiring is

 

connected and not damaged.

Reconnect / repair

Fault

 

wiring if necessary.

 

(will require a manual reset

The control reads the inlet sensor as open

• Measure the resistance of the sensor and compare to

once the condition has been

corrected. Press the RESET

or shorted.

the resistance in Table 3-2C on page 35 of this manual.

button on the SMART

 

Replace sensor if necessary.

 

SYSTEM display to reset.)

 

• Replace control module.

 

 

 

 

 

 

 

 

 

• Check wiring to sensor. Make sure wiring is

 

 

connected and not damaged. Reconnect / repair

Outlet 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

temperature difference between the two

the resistance in Table 3-2C on page 35 of this manual.

corrected. Press the RESET

sensors.

Replace sensor if necessary.

 

button on the SMART

 

• Restore control parameter defaults from optional PC

SYSTEM display to reset.)

 

 

 

software.

 

 

 

• Replace control module.

 

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Lochinvar 81-286 service manual Sensor Shorted, Louver Proving, Inlet Sensor, Fault, Outlet Sensor, Outlet Temp Diff
Page 41 Page 43

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.