Lochinvar Troubleshooting: Boiler Stuck in Standby Mode
Page 13

Service Manual

1 Service (continued)

Viewable and changeable control parameters

Status Screen:

When the ON/OFF switch is turned to the ON position, the first screen visible on the LCD display will be the Status Screen. This screen displays the current status of the SYNC boiler. The following items can be viewed or interacted with on the Status Screen:

On/Off button - Pressing this button allows the boiler to be placed in either Manual Shutdown Mode or Standby Mode.

Boiler Status - This line shows the current operating status of the SYNC boiler. Displayed items are as follows:

•Manual Shutdown - The boiler will not respond to either a system call or a hot water generation call.

•Standby - The boiler has not received a system call or hot water generation call.

•SH Call for Heat - The boiler has received a system heat call.

•SH Pump Delay - The boiler has satisfied a system heat call and the boiler pumps are running for a fixed time to remove any residual heat.

•HW Storage - The boiler has received a hot water generation call.

•HW Pump Delay - The boiler has satisfied a hot water generation call and the hot water generator pumps are running for a fixed time to remove any residual heat.

•SH BMS - The boiler has received a call for heat from a 0-10 VDC BMS control.

•Service Set Point Met - While in Service Mode, the water temperature at either the outlet sensor or the system sensor has exceeded 185°F.

•HW Outlet Set Point Met - The outlet water temperature has exceeded the HW Generator Set Point parameter.

•OA Shutdown - The outside air temperature has exceeded the Outdoor Shutdown Set Point parameter.

•SH Set Point Met - The water temperature as measured by the system supply sensor has exceeded the User Set Point parameter or if the optional Outdoor Air Sensor was used, the calculated set point based on the Outdoor Reset parameters.

•Anti-Cycle Delay - The boiler has satisfied a system heat call, but has received another system heat call before the anti-cycling time parameter has elapsed.

•Cascade ComError - A communication error has occurred between the Control Module 1 and Control Module 2 or between the Leader and Member boilers.

13

Page 12 Page 14
Image 13
Page 12 Page 14
Contents Models 1.0, 1.3, Contents Niosh stated First Aid Handling ceramic fiber materialsMaintenance ServiceTroubleshooting Near boiler piping ServiceSync display Board Control inputsControl outputs Secondary Smart Touch Control Module PrimaryHow the boiler operates General OperationHow the control module operates Sequence of operationSequence of operation space heating and HW Sequence of operationParameter table This table lists the parameters and where to access themOutdoor Reset Status Screen Viewable and changeable control parametersService 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 Operation Cascade Parameters ScreenPumps Parameters Screen 10Vdc Operation 10Vdc BMS Parameters ScreenService Cascade Screen Service Temps Screen Burners Screen Graph Select Screen History Screen Service Mode Screen Maintenance Maintenance and annual startup Clean condensate trap Address reported problemsInspect boiler area Inspect boiler interiorCheck water system Flue vent system and air pipingCheck expansion tank Check boiler relief valve Check all boiler wiring Check ignition ground wiringCheck control settings Inspect ignition and flame sense electrodesCleaning boiler heat exchanger Check flame signalReview with owner Test low water flow conditions Test procedureAlarm Screen TroubleshootingCheck the following Before troubleshootingCheck control module fuses No Burner No DisplayOperation Unit DoesTemperature Resistance Checking temperature sensorsNo Pump NoisyOperation Boiler Pump System PumpCondensate Flow SwitchDrain Blocked Flame outFlame Lost Light cont’dWhile Running Troubleshooting High Limit / HEX Automatic ResetTemp SW Blower RPM’sToo High Louver Proving SwitchSensor Open Sensor ShortedAir Flow Too Resets Try LaterLow Flap ValveNo Error Stored Internal FaultWriting to MemosGas Valve Adjustment Combustion Analysis ProcedureOr Obstruction Gas Supply PressureModel Gas valve adjustment procedureModels 1.3
Related manuals
Manual 16 pages 3.68 Kb Manual 20 pages 6.19 Kb Manual 52 pages 37.07 Kb Manual 16 pages 33.86 Kb Manual 80 pages 59.46 Kb Manual 56 pages 36.01 Kb

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.
Top Page Image Contents