Service Manual

3Troubleshooting

Table 3F Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface

FAULT

DESCRIPTION

 

 

CORRECTIVE ACTION

 

 

 

 

 

 

 

 

 

 

 

 

 

Either the manual reset low

gas

pressure

• Reset the pressure switches.

 

 

 

 

 

 

 

 

 

 

 

switch or the manual reset high gas pressure

 

 

 

 

 

 

 

Gas Pressure SW

switch tripped.

 

 

• Measure the supply gas pressure to determine cause

 

 

 

of failure.

Natural gas pressures should be between

(will require a manual

 

 

 

4 - 14 inches w.c.

 

 

 

 

reset once the condition

 

 

 

• Refer to Section 7 - Gas Connections of the Armor

has been corrected.

 

 

 

 

 

 

Water Heater Installation and Operation Manual for

Press the RESET button

 

 

 

 

 

 

detailed information concerning the gas supply.

on the SMART SYSTEM

 

 

 

 

 

 

 

 

 

 

 

 

 

display to reset.)

 

 

 

• Correct the supply gas pressure if necessary.

 

 

 

 

 

• Check for a loose or misplaced jumper if pressure

 

 

 

 

switches are not installed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The flow switch is not making.

 

 

• Check water heater pump operation on a call for heat.

 

 

 

 

Flow Switch

 

 

 

• Check for closed valves or obstructions in the water

 

 

 

heater piping.

 

 

 

 

(will require a manual

 

 

 

• Verify

system is full of

water

and all

air has been

reset once condition has

 

 

 

 

 

 

purged from the system.

 

 

 

 

been corrected. Press

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the RESET button on

 

 

 

• Check for loose or misplaced jumpers if flow switch is

the SMART SYSTEM

 

 

 

 

 

 

not installed.

 

 

 

 

display to reset.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Blown fuse.

 

 

• Replace fuse F2 on the control board, see page 24 of

 

 

 

 

 

 

 

this manual.

 

 

 

 

 

 

 

 

 

Blocked Drain SW

 

 

 

• Check condensate tube from unit to floor drain for

 

 

 

proper installation and obstructions.

 

 

(will require a manual

 

 

 

• Inspect condensate trap for blockage. Clean if

reset once condition has

The blocked drain switch

has

detected

necessary.

 

 

 

 

 

been corrected. Press

excessive condensate build

up inside the

 

 

 

 

 

 

 

 

 

 

 

 

the RESET button on

 

 

 

 

 

 

 

unit.

 

 

• Check

for

loose wiring

connection at

wire

harness

the SMART SYSTEM

 

 

 

 

 

plug.

 

 

 

 

 

 

display to reset.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Bad blocked drain switch. Replace switch.

 

 

 

 

 

 

 

 

 

 

• Check the wiring connections to switch. Wires should

 

 

 

 

be connected to the common and normally closed

 

 

 

 

terminals.

 

 

 

 

 

 

 

 

 

• Air intake lengths exceed the maximum allowed

 

 

 

 

lengths. Refer to Section 3 - General Venting of the

APS

 

 

 

Armor Water Heater Installation and Operation Manual

 

 

 

for proper lengths.

 

 

 

 

Open

 

 

 

 

 

 

 

 

 

 

• Check

for

obstruction

or

blockage

in

the air

(will require a manual

 

 

 

 

 

 

intake pipes or at terminations.

 

 

 

reset once the condition

Air pressure switch contacts are open.

 

 

 

• Check reference hoses connected to the air pressure

has been corrected.

 

 

 

Press the RESET button

 

 

 

switch for blockage or obstruction.

 

 

on the SMART SYSTEM

 

 

 

• Inspect the burner. Reference page 22 of this manual

display to reset.)

 

 

 

for removal and cleaning procedures.

Replace if

 

 

 

 

necessary.

 

 

 

 

 

 

 

 

 

• Inspect the heat exchanger. Reference page 23 of this

 

 

 

 

manual for removal and cleaning procedures.

 

 

 

 

Replace if necessary.

 

 

 

 

 

 

 

 

• Faulty air pressure switch. Replace switch.

 

 

 

 

 

 

 

 

 

 

 

 

28

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Image 28
Lochinvar 151 - 801 service manual Fault Description Corrective Action, Flow Switch
Page 27 Page 29

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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