Lochinvar Boiler Manual: Troubleshooting Air Switch Open and Other Issues
Page 52

Service Manual

3 Troubleshooting

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

FAULT

DESCRIPTION

CORRECTIVE ACTION

 

Air pressure switch contacts are open.

• Check the wiring connections to switch. Wires should

 

 

be connected to the common and normally closed

 

 

terminals.

 

 

• Vent/air intake lengths exceed the maximum allowed

 

 

lengths. Refer to Section 2 - General Venting of the

 

 

SYNC Installation and Operation Manual for

 

 

proper lengths.

 

 

• Check for obstruction or blockage in the vent/air

 

 

intake pipes or at terminations.

 

 

• Check reference hoses connected to the air pressure

Air Flow Too

 

switch for blockage or obstruction.

Low

 

• Inspect the burner. Reference page 39 of this manual

(will require a manual

 

for removal and cleaning procedures. Replace if

reset once the condition

 

necessary.

has been corrected.

 

• Inspect the heat exchanger. Reference page 40 of

Press the RESET button

 

on the display to reset.)

 

this manual for removal and cleaning procedures.

 

 

Replace if necessary.

 

 

• Faulty air pressure switch. Replace switch.

 

 

 

 

 

• Check the wiring connections to the flap valve switch.

 

 

Replace or repair wiring if necessary.

 

 

• Check for obstruction in the vent / air intake pipes or

 

Flap valve contacts are in an open position.

at terminations.

 

 

 

 

• Verify combustion air blower is operating. Replace if

 

 

necessary.

 

 

• Replace flap valve switch.

 

 

 

 

 

• Check wiring connections to the flap valve switch.

Flap Valve

 

Replace or repair wiring if necessary.

Flap valve contacts are in a closed position.

 

Stuck Open

• Check flap valve for obstruction or blockage.

 

 

• Replace flap valve switch.

 

 

 

Too Many

Too many manual resets have occurred

• Wait 15 minutes and try again.

• Turn power off to unit, wait 30 seconds and then turn

Resets - Try Later

during a 15 minute period.

 

 

power back on.

 

 

 

 

 

• Check 120 VAC supply to the transformer.

Voltage Too

 

• Check wiring connections at the low voltage terminal

120 VAC input to the main control board has

strip.

Low

 

dropped below 80 VAC.

• Check the wire size/length to remote devices.

 

 

 

 

 

• Replace the main control board.

 

 

 

52

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Contents Models 1.0, 1.3, Contents Handling ceramic fiber materials Niosh stated First AidMaintenance ServiceTroubleshooting Service Near boiler pipingSync display Control inputs BoardSecondary Smart Touch Control Module Primary Control outputsGeneral Operation How the boiler operatesHow the control module operates Sequence of operationSequence of operation Sequence of operation space heating and HWThis table lists the parameters and where to access them Parameter tableOutdoor Reset Viewable and changeable control parameters Status ScreenService Details Screen Service Main Screen Setup Screen Service/Setup Parameters Screen Service Set Point Parameters Screen Outdoor Reset Parameters Screen Service Night Setback Parameters Screen Cascade Parameters Screen Cascade OperationPumps Parameters Screen 10Vdc BMS Parameters Screen 10Vdc OperationService Cascade Screen Service Temps Screen Burners Screen Graph Select Screen History Screen Service Mode Screen Maintenance Maintenance and annual startup Address reported problems Clean condensate trapInspect boiler area Inspect boiler interiorCheck water system Flue vent system and air pipingCheck expansion tank Check boiler relief valve Check ignition ground wiring Check all boiler wiringCheck control settings Inspect ignition and flame sense electrodesCleaning boiler heat exchanger Check flame signalReview with owner Test procedure Test low water flow conditionsTroubleshooting Alarm ScreenCheck the following Before troubleshootingCheck control module fuses No Display No BurnerOperation Unit DoesChecking temperature sensors Temperature ResistanceNoisy No PumpOperation Boiler Pump System PumpFlow Switch CondensateDrain Blocked Flame outFlame Lost Light cont’dWhile Running Troubleshooting Automatic Reset High Limit / HEXTemp SW Blower RPM’sLouver Proving Switch Too HighSensor Open Sensor ShortedResets Try Later Air Flow TooLow Flap ValveInternal Fault No Error StoredWriting to MemosCombustion Analysis Procedure Gas Valve AdjustmentOr Obstruction Gas Supply PressureModel Gas valve adjustment procedureModels 1.3
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1.3, 1 specifications

Lochinvar 1 is a remarkable achievement in the realm of modern technology and engineering. As a powerful and efficient water heater, it has been designed to cater to a wide range of residential and commercial needs. One of the standout features of Lochinvar 1 is its advanced heating technology, which incorporates a high-efficiency condensing design. This technology allows the unit to achieve impressive energy savings by maximizing heat transfer while minimizing energy consumption.

The Lochinvar 1 utilizes a stainless steel heat exchanger that enhances durability and corrosion resistance. This not only extends the lifespan of the unit but also ensures consistent performance over time. Coupled with a user-friendly control system, users can easily adjust settings and monitor performance, enhancing overall convenience and usability.

Another key characteristic of the Lochinvar 1 is its compact design, making it suitable for a variety of installation environments. Whether in a residential basement or a commercial utility room, the unit’s space-saving configuration allows for efficient use of available area without compromising on capability.

Safety features are integral to the Lochinvar 1, providing peace of mind for users. The unit is equipped with advanced monitoring systems that can detect irregularities and automatically shut down the system if necessary. This not only protects the equipment but also enhances the safety of the environment in which it operates.

In terms of performance, Lochinvar 1 boasts a high recovery rate, ensuring hot water is available on demand. This is particularly beneficial for settings with high water usage, allowing simultaneous operations without lag.

Moreover, the unit supports various venting options, offering flexibility during installation. Whether using traditional vertical venting or innovations like direct venting, Lochinvar 1 accommodates different building designs and local codes, making it highly versatile.

In conclusion, Lochinvar 1 epitomizes the melding of efficiency, reliability, and user-friendly technology. With its high-performance features, robust safety systems, and adaptable installation options, it stands out as a forefront player in the water heating industry, meeting the diverse needs of today's consumers and businesses alike.
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