Lochinvar SNA285-125 Manuale Utente

By using the Previous/Next (, ) arrow keys on the electronic control module display panel, you can navigate through the 
five (5) display screens.  Each screen will contain two (2) viewable items.  The following is a description of the individual items 
and what they can display:

The unit has been turned OFF by the Enter/Reset button on the 
electronic control module display panel.

The unit has not received a call for heat.

The unit has initiated a prepurge period on a call for heat.

The unit has begun a spark period to ignite the main burner.

The unit has fired and is running at the displayed percentage.

The call for heat has been satisfied and the unit runs the fan for an 
additional postpurge period to clear the combustion chamber and vent 
system of residual flue products.

The unit has been placed in a temporary mode that will allow the unit to 
fire at 100% of rate for the purpose of combustion analysis.

The tank temperature is displayed.

The control does not detect the tank sensor.

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

Press the Next  arrow key on the electronic control module display to access Screen #2.

The temperature at the inlet to the heat exchanger is displayed.

The control does not detect the heat exchanger inlet sensor.

The heat exchanger inlet sensor wires or the sensor itself has become 
shorted.

The temperature at the outlet of the heat exchanger is displayed.

The control does not detect the heat exchanger outlet sensor.

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

Press the Next  arrow key on the electronic control module display to access Screen #3.

       

Installation & Service Manual

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