Lochinvar Water Heater Manual: Troubleshooting, Error Codes, and Parameters
Page 30

Service Manual

3Troubleshooting

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

FAULT

DESCRIPTION

CORRECTIVE ACTION

 

 

 

 

The temperature rise across the heat

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

 

exchanger has exceeded the set parameters

has been properly purged from the system.

 

 

 

for the water heater.

• 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.

 

 

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

 

 

a 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

Temp O/Shoot

 

speed or that the pump is the proper size. Reference

 

Section 6 - System Piping of the Armor Water Heater

(continued)

 

Installation and Operation Manual for water heater

 

 

pump specifications.

 

 

 

 

Outlet water temperature has exceeded the

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

 

maximum outlet water temperature.

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.

 

 

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

 

 

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.

 

 

 

Parameters

After downloading parameters from a laptop,

 

Progr

• Press the ENTER/RESET button on the SMART

(will require a manual

the main control board must be reset.

SYSTEM display panel.

 

reset once the condition

 

 

has been corrected. Press

 

 

the RESET button on the

 

 

SMART SYSTEM display

 

 

to reset.)

 

 

 

 

 

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Contents Models 150 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid Maintenance What is in this manual?Service TroubleshootingService Armor water heater displayControl inputs Control outputs Sequence of operation General OperationHow the water heater operates Saving parametersSequence of operation Display panel menu access Use this procedure to access menus from the display panelDisplay panel parameter access Button Operation Display CommentsParameter table WHRViewable and changeable control parameters Not used Data loggingWHR settings FunctionsNot used Control modes Service Notification Circulation pumpsMaintenance Maintenance and annual startup Service technicianOwner 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 water heater heat exchanger Oiled bearing circulatorsCheck control module fuses TroubleshootingBefore troubleshooting Check the followingOperation No DisplayNo Burner Unit Does NotChecking temperature sensors Temperature F Resistance ΩRelief Valve Noisy OperationNo Pump OpeningSequence Flow SwitchFlame GV/RelayNo Flame Ign No Flame RunningFan Low Manual ResetHigh Limit Fan Speed LowSensor Open Fan HighFan Speed High Sensor ShortedRem Ctrl Flt ParametersProgr No Error Stored Service BlkWatch Dog Error Low 24 VACOr Obstruction Combustion Analysis ProcedureGas Valve Adjustment Gas Supply PressureGas valve adjustment procedure Models 150Model Page

150 - 500 specifications

Lochinvar has established itself as a leader in the field of hydronic heating solutions, and the Lochinvar 150 - 500 series is a prime example of its commitment to innovation and efficiency. Designed primarily for commercial applications, this line of high-efficiency boilers is engineered to provide optimized performance, reliability, and cost-effectiveness.

One of the standout features of the Lochinvar 150 - 500 series is its robust construction. Built with a durable stainless-steel heat exchanger, these boilers offer superior resistance to corrosion, ensuring a longer lifespan and consistent performance over time. The advanced design of the heat exchanger also maximizes heat transfer, contributing to higher efficiency ratings.

In terms of technology, the Lochinvar 150 - 500 series incorporates the Concentric Venting System, which allows for flexible installation options and reduces the overall footprint required for the boiler setup. This system is particularly advantageous in commercial settings where space can be limited. The boilers are equipped with smart controls that provide real-time monitoring and diagnostics, allowing for easier maintenance and reducing downtime.

The series features a comprehensive modulation range, allowing the boilers to adjust their output based on the heating demand. This capability not only enhances efficiency but also lowers energy consumption, making it an eco-friendly choice for businesses seeking to reduce their environmental impact. The Lochinvar 150 - 500 boilers utilize innovative combustion technologies, including an integrated burner that ensures optimal combustion efficiency and reduced emissions.

Safety is a priority with the Lochinvar 150 - 500 series, which includes multiple safety features such as lockout protection, pressure switches, and high-temperature limit controls. These measures ensure that the unit operates safely under varying conditions, providing peace of mind for operators.

Additionally, the compact design of the Lochinvar 150 - 500 series allows for easy transportation and installation. Its lightweight structure enables it to be maneuvered through tight spaces typically found in commercial buildings, making it a versatile option for installers.

In summary, the Lochinvar 150 - 500 series is an excellent choice for anyone seeking a reliable, efficient, and technologically advanced boiler solution. With its durable construction, advanced features, and commitment to safety and efficiency, this series stands out as a trusted option in the competitive market of hydronic heating systems.
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