Installation & Operation Manual

7 Operating information

Status display screens

Status Display Screens

By using the Previous/Next (, ) arrow keys on the SMART SYSTEM display panel, you can navigate through the 11 display screens. Each screen will contain two (2) viewable items. The following is a description of the individual items and what they can display:

Screen #

Display Shows

Description

 

HTR: OFF

The unit has been turned OFF by the Enter/Reset button on the

 

SMART SYSTEM display panel.

 

 

 

 

 

 

HTR: STAND-BY

The unit has not received a call for heat from a remote thermostat nor

 

has it received a call for heat from a DHW thermostat.

 

 

 

 

 

 

 

The unit has met the water temperature set point, but is still receiving

 

HTR: SETPOINT MET

a call for heat from either a remote thermostat, a DHW thermostat,

 

 

or a BMS.

 

 

 

 

HTR: PRE-PURGE

The unit has initiated the 10 second air purge upon a call for heat.

Screen #1

 

 

 

The unit has begun the 30 second heatup time prior to the trial for

Line 1

HTR: IGNITER * ON

ignition. Display will show IGNITER A or IGNITER B depending on

 

 

which stage has priority.

 

 

 

 

HTR: RUN STG ****

The unit has fired and is running at the displayed number of stages

 

Or

 

(1,2,3,4)

 

HTR: DHW STG ****

 

 

 

 

 

 

 

The call for heat has been satisfied and the unit runs the fan for an

 

HTR: POST-PURGE

additional 10 seconds to clear the combustion chamber and vent

 

 

system of residual flue products.

 

 

 

 

HTR: SERVICE MODE

The unit has been placed in a temporary mode that will allow the unit

 

to fire for the purpose of combustion analysis.

 

 

 

 

 

 

 

When the outlet sensor has been selected as the control sensor

 

OUT: ***F (***)

(default), the control will display the outlet temperature as well as the

 

 

set point in parenthesis.

 

 

 

Screen #1

 

If the outlet sensor has not been selected as the control sensor or a

OUT: ***F

system supply sensor is connected, only the outlet temperature will be

Line 2

 

displayed.

 

 

 

 

OUT: OPEN

The control does not detect the outlet sensor.

 

 

 

 

OUT: SHORTED

The outlet sensor wires or the sensor itself has become shorted.

 

 

 

Press the Next arrow key on the SMART SYSTEM display to access Screen #2.

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Lochinvar 402 - 2072 operation manual Status display screens

402 - 2072 specifications

The Lochinvar 402 - 2072 is a versatile and highly efficient boiler designed to meet the heating demands of modern residential and commercial applications. This model stands out due to its innovative technologies, advanced features, and a high level of reliability, making it an ideal choice for consumers looking for an enduring and economical heating solution.

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