Lochinvar 151 - 801 service manual Outlet Temp High, Rem Ctrl Flt, Service Blk

Page 34

Service Manual

3Troubleshooting

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

FAULT

DESCRIPTION

CORRECTIVE ACTION

 

 

 

 

 

• Verify that the system is full of water and that all air

 

 

has been properly purged from the system.

 

 

• Verify that the water heater is piped properly into the

 

 

heating system. Refer to Section 6 - System Piping

 

 

of the Armor Water Heater Installation and Operation

 

 

Manual for the proper piping methods for the Armor

Outlet Temp High

 

water heater.

Outlet water temperature has exceeded the

• Check for 120 VAC to the water heater pump motor on

 

maximum outlet water temperature.

a call for heat. If voltage is not present, check wiring

 

 

 

 

back to the main control board. Replace the main

 

 

control board if necessary.

 

 

• If 120 VAC is present on a call for heat and the water

 

 

heater pump is not operating, replace the pump.

 

 

• Replace the main control board.

 

 

 

 

External control is cycling too often.

• Check set point of the external control.

 

 

Rem Ctrl Flt

 

• Check the wiring between the external control and the

 

unit.

 

 

 

 

• Replace the control.

 

 

 

 

 

• Establish a heating load to remove the heat from the

 

 

water heater loop.

 

 

• Verify that the system is full of water and that all air

 

 

has been properly purged from the system.

 

 

• Verify that the water heater is piped properly into the

 

 

heating system. Refer to Section 6 - System Piping

 

 

of the Armor Water Heater Installation and Operation

 

 

Manual for the proper piping methods for the Armor

 

 

water heater.

Service Blk

While the unit is in Service Mode, the outlet

• Check 120 VAC to the water heater pump motor on a

 

temperature has exceeded 185°F.

call for heat. If voltage is not present, check the wiring

 

 

 

 

back to the main control board. Replace the main

 

 

control board if necessary.

 

 

• If 120 VAC is present on a call for heat and the water

 

 

heater pump is not operating, replace the pump.

 

 

• Verify that the water heater pump is set to the proper

 

 

speed or that the water heater pump is the proper

 

 

size. Reference Section 6 - System Piping of the

 

 

Armor Water Heater Installation and Operation

 

 

Manual for water heater pump specifications.

 

 

 

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Contents Models 151 Contents Handling ceramic fiber materials Please read before proceedingNiosh stated First Aid Maintenance What is in this manual?Service TroubleshootingService Armor water heater displaySmart System Control Board Control inputsSmart System Control Board Control outputsHow the water heater operates Access modesGeneral Operation Sequence of operationOperation Display Display panel menu access Button Screen Operation Display StatusDisplay panel parameter access Parameter table GeneralModes Viewable and changeable control parameters Functions DHW SettingsData Logging Anti-CyclingControl modes Minimum On/Off Time Circulation pumpsService Notification Service technician Maintenance Maintenance and annual startupOwner maintenance Maintenance Check expansion tank Flue vent system and air pipingCheck water system Check water heater relief valveCheck control settings Check ignition ground wiringCheck all water heater wiring Perform start-up and checksReview with owner Check flame signalCleaning heat exchanger Oiled bearing circulatorsCheck control module fuses TroubleshootingBefore troubleshooting Check the followingOperation No DisplayNo Burner Unit Does NotWire Color R/BK and Y Wire Color G and Y Checking temperature sensorsTemperature F Resistance Ω Resistance TemperatureRelief Valve NoisyNo Pump OpeningFault Description Corrective Action Flow SwitchAnti-cycling Flame Fail IgnNo Flame RunningFlame Sequence Auto ResetManual Reset High LimitGV/Relay Fan LowFan Speed Low FailFlue Temp High Sensor ShortedLouver Proving Delta T HighOutlet Temp High Service BlkRem Ctrl Flt Fatal Error Watch Dog ErrorNo Error Stored Low 24 VACOr Obstruction Combustion Analysis ProcedureGas Valve Adjustment Gas Supply PressureModels 151 Gas valve adjustment procedureModel 4Gas Valve Adjustment Model Models 601

151 - 801 specifications

Lochinvar 151 - 801 is a high-efficiency commercial water heater designed to meet the demanding needs of various applications in the hospitality, healthcare, and educational sectors. This advanced system provides reliable hot water with enhanced performance while promoting energy conservation and sustainability.

One of the standout features of the Lochinvar 151 - 801 is its powerful heating capability. With a robust heating input of up to 150,000 BTU per hour, it ensures a steady supply of hot water even during peak demand times. The efficient heat exchanger design optimizes thermal performance, allowing for quicker recovery rates, which is essential for facilities requiring substantial hot water usage.

This model integrates cutting-edge technologies to maximize energy efficiency. Utilized in the Lochinvar 151 - 801 is the Smart System control technology, which provides precise temperature management and diagnostics. This feature not only enhances operation efficiency but simplifies service and maintenance by providing real-time data and alerts, leading to reduced downtime.

Additionally, the Lochinvar 151 - 801 employs a stainless-steel tank construction that promotes durability and robustness. The tank is adequately insulated to minimize heat loss, thus keeping energy costs down. Its compact design also allows for easy installation in various spaces, including those with limited footprints.

Moreover, the unit features advanced combustion technology, including a modulating gas valve that adjusts the flame size according to demand, promoting even greater efficiency. This ensures that the water heater operates at optimum performance levels, reducing fuel consumption while ensuring a consistent supply of hot water.

Safety is a primary concern for Lochinvar, and the 151 - 801 model includes several integrated safety features, such as an ignition safety shutoff and a temperature/pressure relief valve. These systems work together to provide peace of mind while ensuring the unit operates safely within its designated parameters.

In conclusion, the Lochinvar 151 - 801 is an exemplary choice for commercial applications, offering powerful performance, efficient technologies, durable construction, and enhanced safety features. With its combination of high output and advanced monitoring capabilities, it stands as a reliable solution for organizations seeking an effective hot water heating solution.
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