Lochinvar 50-210 Fan High, Fan Speed High, Sensor Open, Sensor Shorted, Aux. Proving

Page 36

Service Manual

3Troubleshooting

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

FAULT

DESCRIPTION

CORRECTIVE ACTION

 

The actual fan RPM is 30% higher than what

• Vent/air intake lengths exceed the maximum allowed

 

is being called for.

lengths. Refer to Section 3 - General Venting of the

 

 

Knight Wall Mount Installation and Operation Manual

Fan High

 

for proper lengths.

 

 

OR

 

• Check for obstruction or blockage in the vent/air

Fan Speed High

 

intake pipes or at terminations.

(will require a manual

 

• Check the wiring connections at the fan and at the

reset once the condition

 

has been corrected. Press

 

main control board.

the RESET button on the

 

• Replace the fan.

SMART SYSTEM display

 

 

 

to reset.)

 

• Replace the main control board.

 

 

 

 

 

 

Either the inlet water or outlet water

• Check the sensors and their associated wiring.

Sensor Open

temperature sensor has been disconnected.

Repair or replace the sensor or wiring if damaged.

 

 

(will require a manual

 

• Measure the resistance of the sensors and compare

reset once the condition

 

 

the resistance to the tables on page 30 of this

has been corrected. Press

 

 

manual.

the RESET button on the

 

 

 

SMART SYSTEM display

 

• Replace the sensor if necessary.

to reset.)

 

 

 

 

 

 

 

Either the inlet water or outlet water

• Check the sensors and their associated wiring.

Sensor Shorted

temperature sensor has been shorted.

Repair or replace the sensor or wiring if damaged.

(will require a manual

 

• Measure the resistance of the sensors and compare

reset once the condition

 

 

the resistance to the tables on page 30 of this

has been corrected. Press

 

 

manual.

the RESET button on the

 

 

 

SMART SYSTEM display

 

• Replace the sensor if necessary.

to reset.)

 

 

 

 

 

 

Aux. Proving

An optional remote proving switch is not

• Check function of remote devices.

(will require a manual

making.

• Check for loose or misplaced jumper if auxiliary

reset once the condition

 

has been corrected. Press

 

proving switch is not installed.

the RESET button on the

 

 

SMART SYSTEM display

 

 

to reset.)

 

 

 

 

 

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Contents Models 50 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid When servicing boiler What is in this manual? ServiceMaintenance TroubleshootingService Near boiler pipingKnight wall mount display Smart Control Module Control inputsControl outputs General Operation How the boiler operatesHow the control module operates Sequence of operationSequence of operation OUT 123.8F129BLR SH 41% Rate Display panel menu access Display panel parameter access Temperature Data Parameter tableControl Circulation Service Temperature settings Viewable and changeable control parametersDHW settings Outdoor air resetData logging FunctionsShift reset curve Maximum SH set pointMinimum SH set point Outdoor air shutdownAnti-cycling Control modes SH controlling sensorSH source Boiler cascade addressService Notification Cascade offsetCirculation pumps Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Flue vent system and air piping Check water systemCheck expansion tank Check boiler relief valveCheck ignition ground wiring Check all boiler wiringCheck control settings Inspect ignition and flame sense electrodesCheck flame signal Cleaning boiler heat exchangerReview with owner Oiled bearing circulatorsTroubleshooting Before troubleshootingCheck control module fuses Check the followingNo Display No BurnerOperation Unit Does NotChecking temperature sensors Temperature ResistanceNoisy No PumpBoiler Pump System Pump DHW PumpSwitch/LWCO FlowFlame SequenceAnti-cycling No Flame IgnNo Flame RunningAuto Reset High LimitFan Low Fan Speed LowFan High Fan Speed HighSensor Open Sensor ShortedTemp O/Shoot Rem Ctrl Flt Parameters ProgrOpen Service Blk Watch Dog ErrorNo Error Stored Low 24 vacCombustion Analysis Procedure Gas Valve AdjustmentOr Obstruction Gas Supply PressureGas valve adjustment procedure 2Gas Valve AdjustmentPage

50-210 specifications

The Lochinvar 50-210 is a powerful and efficient boiler designed for residential and commercial heating applications. This model is a part of Lochinvar’s line of advanced heating solutions, known for their reliability, efficiency, and innovative technologies. The 50-210 offers a high thermal efficiency rating, ensuring that energy consumption is minimized while still providing excellent heating performance.

One of the standout features of the Lochinvar 50-210 boiler is its advanced control system. It is equipped with a user-friendly LCD display that allows easy access to system settings and real-time performance data. This technology enhances user experience, allowing for easy adjustments and monitoring, ensuring optimal performance based on specific heating needs.

The Lochinvar 50-210 is designed with a fully modulating burner, which means it can adjust its output to match the heating demand effectively. This feature not only provides superior comfort but also increases energy savings by preventing the boiler from running at full capacity when it's not necessary. Moreover, the modulating burner minimizes wear and tear, extending the lifespan of the unit.

In terms of safety, the Lochinvar 50-210 incorporates several features such as multiple temperature and pressure sensors, flame safeguard systems, and safety cut-off controls. These safeguard mechanisms ensure that the system operates safely and efficiently, providing peace of mind to users.

The construction of the Lochinvar 50-210 is robust, featuring high-grade stainless steel and a durable heat exchanger. This design helps resist corrosion, ensuring longevity and requiring minimal maintenance over the years. Additionally, its compact design allows for easier installation, making it suitable for various settings, even those with limited space.

Furthermore, the Lochinvar 50-210 operates quietly, which adds to its appeal for residential installations. Its environmental considerations are also noteworthy, with low emissions contributing to cleaner air quality.

Overall, the Lochinvar 50-210 is a sophisticated heating solution that blends efficiency, reliability, and advanced technology. With its user-friendly controls, modulating burner, safety features, and durable construction, it meets the heating demands of modern homes and commercial spaces, making it a top choice for those seeking dependable boiler performance.
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