LX and LT Low NOx Pool/Spa Heater Page 25
Figure 25. Temperature Control Panel
a) The LX Control Panel Display
LAARSLAARS
POOL/OFF/SPA
BACKLIGHT
RS SERVICE
ON LINE FOR
OPERATION
WITH
CONTROLLER
AquaLink RS
TM
LAARS
POOL
OFF
SPA
Heating
SERVICE
*
*SERVICE DIAGNOSTICS-SEE INSIDE FRONT DOOR
F°/C°
SELECT
THERMOSTAT SETTINGS
Low Pressure
Hi Lim Sw
Ext Sw 1
Air Flo Sw
AGS
Ext Sw 2
Temp
Sensor
188
188
°F
°C
°F
°C
RS Online
Water
Temp
Thermostat
Setting
Pool Spa
F° C°
b) The LT Control Panel Display
‘Heating’ under the LX logo toward the center of the
upper portion of the screen.
The Model LT displays this information by
lighting a set of indicator lights located on the front of
the control panel.
On the upper right-hand portion of the LCD
screen on the Model LX is a selector arrow. Directly
to the left of the selector arrow are three positions.
They are ‘POOL’, ‘OFF’, and ‘SPA’. This part of the
display indicates the mode of operation in which the
heater is set.
The mode of operation of the Model LT is
shown by two indicator lights labeled "SPA" and
"POOL"
Underneath the mode selector on the Model LX
display screen is a Backlight indicator. To turn the
backlight on, press the middle button to the right of
the screen, labeled "Backlight".
Below the Backlight indicator is an RS service
indicator, which displays "RS Online" when the heater
is connected to an RS unit.
Directly below the RS Service indicator on the
bottom right hand portion of the LCD screen is the
Fahrenheit/Celsius temperature unit indicator.
The Model LT does not offer these features.
7.3.2 Turning the Heater On or Off
When power is supplied to the Model LX
heater, the control goes into a diagnostic mode for
approximately 15 seconds before the heater can be
turned to the Pool or Spa mode. During this time the
display will show "RS Online". If there is an RS control
connected to the heater, it will sense the RS unit and
remain online. If the control is not connected to an RS
unit the "RS Online" indication on the display will
disappear after the initial 15 seconds. When the display
shows "RS Online" all functionality of the control at
the heater is disabled. The heater functions can be
controlled only at the RS unit. However, sensor data is
displayed at both the heater and the RS unit. (See
Section 6.5 "Remote Operation").
When power is first supplied to the Model LT
heater, it also runs through a circuit board diagnosis to
make sure that the control is working correctly.
Indicator lights will flash during the 10 second diagnos-
tic sequence.
After the initial diagnostic sequence on the
Model LX, the heater can be turned to Pool or Spa
mode by pressing and releasing the top (mode) button
to the right of the LCD screen so that the selector
arrow is aligned with either the Pool or Spa setting as
seen on the LCD screen.
To turn the Model LT heater on, press and
release the button located between the "POOL" and
"SPA" indicator lights. Repeat pressing the button to
achieve the desired mode of operation shown by the
indicator lights. When neither light is on, the heater is
"OFF"
It is now necessary to set the thermostat to the
desired pool or spa setting.
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