Lochinvar 1 service manual Before troubleshooting, Check the following, Check control module fuses

Page 43

3 Troubleshooting (continued)

WARNING

Label all wires prior to disconnection when

 

servicing controls. Wiring errors can

 

cause improper and dangerous operation.

 

Always disconnect power to the boiler

 

before servicing. Failure to comply could

 

result in severe personal injury, death, or

 

substantial property damage.

WARNING Never jumper (bypass) any device except for momentary testing as outlined in the

Troubleshooting chart. Severe personal injury, death, or substantial property damage can result.

Before troubleshooting:

1.Have the following items:

a.Voltmeter that can check 120 VAC, 24 VAC, and 12 VDC.

b.Continuity checker.

c.Contact thermometer.

2.Check for 120 VAC (minimum 102 VAC to maximum 132 VAC) to boiler.

3.Make sure thermostat is calling for heat and contacts (including appropriate zone controls) are closed. Check for 24 VAC between thermostat wire nuts and ground.

4.Make sure all external limit controls are installed and operating.

Check the following:

1.Wire connectors to control module are securely plugged in at the control module and originating control.

2.Gas pressures:

•Maximum: 14 inches w.c. (3.5 kPa) natural, 14 inches w.c. (3.2 kPa) LP with no flow (lockup) or with boiler on

•Minimum: 4 inches (5 inches on 1.0 models only) w.c. (1.0 kPa) natural, 8 inches w.c. (2.0 kPa) LP with gas flowing (verify during boiler startup)

Service Manual

Check control module fuses

NOTICE

ALWAYS check control module fuses

before replacing control module or any

 

 

major components (blower, etc.). If one

 

of these fuses is blown, it can prevent the

 

control module or other components from

 

operating.

1.Turn OFF the power to the boiler at the external line switch.

2.Remove the front access cover.

3.Remove the two (2) screws securing the control panel to the unit to gain access to the control module.

4.Inspect fuses F2, F3, F4, and F5, see FIG 3-1 below.

Figure 3-1Control Module Fuses

F3 - 1.25 AMP FUSE

MAIN BOARD

F4 - 3.15 AMP FUSE

BLOWER

F5 - 5 AMP FUSE

PUMPS

F2 - 3.15 AMP FUSE

24V SUPPLY

5.The boiler is shipped with six (6) spare fuses in a plastic bag located under the low water cutoff on the control module.

6.If necessary, replace open fuse (F3 is 1.25 amps, F2 and F4 are 3.15 amps, and F5 is 5 amps).

Note: Fuses F2 - F5 are all slow blow fuses.

WARNING Do not jumper fuse or replace with any fuse except as specified. Failure to comply

could result in severe personal injury, death, or substantial property damage.

7. Re-install the control panel using the two (2) screws removed in Step 3. Re-install the front access cover after fuse inspection.

8. Restore power to the boiler at the external line switch and verify boiler operation (Section 9 - Start-up in the SYNC Boiler Installation and Operation Manual) after

completing boiler service.

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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 PrimarySequence of operation General OperationHow the boiler operates How the control module operatesSequence 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 Inspect boiler interior Address reported problemsClean condensate trap Inspect boiler areaCheck water system Flue vent system and air pipingCheck expansion tank Check boiler relief valve Inspect ignition and flame sense electrodes Check ignition ground wiringCheck all boiler wiring Check control settingsCleaning boiler heat exchanger Check flame signalReview with owner Test low water flow conditions Test procedureAlarm Screen TroubleshootingCheck the following Before troubleshootingCheck control module fuses Unit Does No DisplayNo Burner OperationTemperature Resistance Checking temperature sensorsSystem Pump NoisyNo Pump Operation Boiler PumpFlame out Flow SwitchCondensate Drain BlockedFlame Lost Light cont’dWhile Running Troubleshooting Blower RPM’s Automatic ResetHigh Limit / HEX Temp SWSensor Shorted Louver Proving SwitchToo High Sensor OpenFlap Valve Resets Try LaterAir Flow Too LowMemos Internal FaultNo Error Stored Writing toGas Supply Pressure Combustion Analysis ProcedureGas Valve Adjustment Or ObstructionModel Gas valve adjustment procedureModels 1.3
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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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