Lochinvar 1.5, 1.3 Before troubleshooting, Check the following, Check control module fuses

Page 38

3 Troubleshooting

Service Manual

￿WARNING

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Always disconnect power to the water heater before servicing. Failure to comply could result in severe personal injury, death, or substantial property damage.

Figure 3-1Control Module Fuses

F3 - 1.25 AMP FUSE

MAIN BOARD

F4 - 3.15 AMP FUSE

BLOWER

￿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 water heater.

3.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 water heater 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 water heater startup)

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 water heater 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.

F5 - 5 AMP FUSE

PUMPS

F2 - 3.15 AMP FUSE

24V SUPPLY

4.Remove the two (2) nuts on the control module cover.

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

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

7.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.

8.Re-install the control module cover using the nuts removed in Step 4.

Note: If the spark wire was unplugged, reattach it to the control.

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

10.Restore power to the water heater at the external line switch and verify water heater operation (Section 9 - Start-up in the Armor X2 Installation and Operation Manual) after completing water heater service.

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Contents Models 1.0, 1.3, Contents Handling ceramic fiber materials Niosh stated First AidTroubleshooting ServiceMaintenance Armor X2 display Control inputs Primary Smart Control ModuleSecondary Smart Touch Control Module Primary Control outputsSequence of operation General OperationHow the water heater operates Sequence of operation Sequence of operationThis table lists the parameters and where to access them Parameter tableBMS Viewable and changeable control parameters Status ScreenService Details Screen Service Main Screen Setup Screen Service/Setup Parameters Screen Service Set Point Parameters Screen Night Setback Parameters Screen Cascade Parameters Screen Cascade Operation10Vdc 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 Inspect water heater area Address reported problemsClean condensate trap Inspect water heater interiorCheck expansion tank Check water heater relief valve Flue vent system and air pipingCheck water system Check control settings Check ignition ground wiringCheck all water heater wiring Check flame signalOiled bearing circulators Cleaning water heater heat exchangerCheck Delta T Troubleshooting Alarm ScreenCheck control module fuses Before troubleshootingCheck the following Troubleshooting Checking temperature sensors Temperature ResistanceFault Cause Corrective Action Drain Blocked Flow SwitchCondensate Flame outWhile Running Light cont’dFlame Lost High Limit Manual ResetCont’d Temp SW Automatic ResetHigh Limit / HEX Blower RPM’sSensor Open Louver Proving SwitchToo High Sensor ShortedLow Resets Try LaterAir Flow Too Flap ValveWriting to Internal FaultNo Error Stored MemosOr Obstruction Combustion Analysis ProcedureGas Valve Adjustment Gas Supply PressureModels 1.3 Gas valve adjustment procedureModel
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1.5, 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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