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The controller also checks the power supply
voltage. If the voltage is insufficient to run the heater
properly (brown out condition), the controller will
display the service code 'FL 5' and the service icon
(see Section 9.2.1 "SERVICE CODES").
When the controller is in the 'NORMAL' mode,
the heater will operate whenever the 'POOL '
or 'SPA' mode is chosen via the SELECT key,
the pump is on and there is a call for heat. Between
the programmed "ON" and "OFF" times set for the
pump time clock, the heater will operate automatically
if in the 'POOL' or 'SPA' mode. Outside of the
programmed "ON" and "OFF" times set for the pump
time clock, the pump must be turned on by pressing the
'PUMP' key. If not using the LJ controller pump time
clock, the external time clock must first be activated.
7.4.2 Pump Operation
When the controller is in the 'NORMAL' mode,
the pump will operate between the programmed "ON"
and "OFF" times set for the pump time clock. If using
an external time clock, it must synchronized with the
LJ controller time clock. Set the external time clock to
start the cycle 5 minutes before the programmed "ON"
time for the LJ controller pump time clock and to end
the cycle 5 minutes after the programmed "OFF" time
for the LJ controller pump time clock.
The pump can be turned off manually at any time
by pressing the PUMP key. If the heater is running
when the pump is turned off, the pump will go into
'COOL DOWN MODE' and continue to run for 5
minutes. If the heater was running within the last 5
minutes, the pump will continue to run for the time
remaining to complete a 5 minute cool down. The
'COOL DOWN' mode allows cool water to circulate
through the heat exchanger, removing residual heat
from the combustion chamber. When the pump is in
the 'COOL DOWN' mode, the controller will display
the 'COOL DOWN' icon just above the pump icon.
To turn the pump on at any time press the
PUMP key. If the heater is in either the 'POOL' or
'SPA' mode, and the water temperature is less than
the pool or spa temperature setting the ignition se-
quence will begin.
7.4.3 Locking/Unlocking the Keypad
Once all of the limits have been set (see Section
7.2, "Setting the LJ Controller Functions and Limits")
you may choose to lock the keypad to prevent acci-
dental changing of the limits set. Use the following
procedure to lock and unlock the keypad.
1.
Press the MODE key repeatedly until the icon
'°F/°C' appears at the top of the display screen.
2.
Press the ENTER key. The temperature scale
indicator in the lower right corner of the display
will start to flash.
3.
Press the MODE key one more time. The icon
'ULC' (unlocked) or 'LC' (locked) will flash on
the display where the real time clock usually
appears.
4.
Press the UP or DOWN key to toggle between
'ULC' or 'LC'.
5.
Press the ENTER key to accept the choice and
return the controller to the NORMAL mode.
Note: Once the keypad is locked, any attempted
changes to the limits or functions of the LJ
controller will cause the LCD to temporarily
display an "Invalid Command" message.
7.5. Remote Control Operation
To connect a remote control system, the LJ
controller must first be set up to recognize the remote
mode. The set up consists of setting the 'PROGRAM'
(pump time clock) 'ON' and 'OFF' times to run for 24
hours,
To set the LJ controller for remote control use,
set the 'ON' time for the 'PUMP TIME CLOCK' to
12:00 AM and the 'OFF' time to 11:59 PM. Refer to
Section 7.2.5, "Setting the Pump Time Clock". When
the pump time clock is set with these limits, it allows
the internal time clock of the LJ controller to run the
pump for 24 hours. This setup allows the heater to be
controlled by the remote input through the Fireman's
Switch connection.
An interrupt (on/off) type remote switch can be
connected to the heater. To connect a remote ON/
OFF type switch to the heater, remove the wire nut
from the two red leads of the wire harness that
connects to the Fireman's Switch connection on the
power circuit board (see Figure 18). Connect the wires
from the switch to the leads on the wire harness. This
type of remote control will turn the heater on or off,
but will not switch between pool and spa settings or
allow for temperature adjustments. These functions
are still controlled at the LJ controller on the heater.
°F/°c
°f
ULC
LC
NORMAL
Summary of Contents for LJ
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