Model LJ Pool and Spa Heater
Page 37
SERVICE CODE CAUSE REMEDY
FL 2 (cont'd)
(failed ignition)
FL 3
(flame detected when
no flame should
exist)
FL 4
(igniter)
FL 5
(brown-out)
FL 6
(24V signal to gas
valve)
FL 7
(remote operation
circuit)
E. Flame sensor circuitry is not
well grounded.
F. Low gas supply pressure.
G. Heater is wired incorrectly.
H. Failed sensor.
3. Rapidly Cycling Pressure
Switch
A. Air leak in water line or pump.
B. Insufficient back-pressure to
heater.
1. Flame Sensor Error
A. Flame exists prior to ignition
sequence.
B. Failed controller.
1. Igniter Failure
A. Igniter circuit is open.
B. Element has a fine crack in it.
C. Igniter fault.
1. Brown-out Condition
A. Incoming voltage is too low to
safely operate heater.
B. Heater supply voltage is 115V
but power conversion plug is
plugged in on 230V side.
1. Power Module Failure
A. 24V signal is not being sent to
energize the gas valve.
1. Remote Operation Circuit
A. Remote control switch circuit is
open. (Controller is not in
remote control mode).
B. Remote control switch circuit is
not open.
E. Ensure that the green wire from
the 6-pin connector to the power circuit board is
tightly attached to the ground screw with a star
washer.
F. Identify and repair incorrect supply pipe size or
pipeline blockage. Refer to qualified
personnel.
G. Ensure proper wiring. See wiring diagram in
manual or on door of heater for details. Refer to
qualified personnel.
H. Replace flame sensor.
A. Locate and repair leak.
B. Install restrictive fitting at pool/spa outlet. Refer
to qualified personnel.
A. Carefully inspect heater for signs of fire damage.
Refer to qualified personnel.
B. Replace controller. Refer to qualified
personnel.
A. Check fuses on igniter wires. Identify and correct
loose connections or broken wires. Refer to
qualified personnel.
B. Measure room temperature resistance and
ensure value is in the correct range. See manual
for details. Refer to qualified personnel.
C. Replace igniter. Refer to qualified personnel.
A. No Service Required. Heater will automatically
reset itself once proper voltage is restored. If
error persists, Refer to qualified personnel.
B. Reverse power conversion plug.
A. Replace power module board. Refer to
qualified personnel.
A. Identify and correct loose connections. Refer to
qualified personnel.
B. Replace power module board. Refer to
qualified personnel.
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