Model LJ Pool and Spa Heater
Page 33
SERVICE CODE CAUSE
REMEDY
FL 2
1. No Ignition
(failed ignition)
A. Low gas supply pressure.
A. Identify and repair incorrect supply pipe size or
pipeline blockage.
Refer to qualified personnel.
B. Air in gas line.
B. Shutdown heater and restart. If the heater does
not ignite,
refer to qualified personnel
.
C. No gas flowing
C. Be sure that the manual gas cock and the
automatic valve are in the "ON" position. Check
for loose wire connections at gas valve.
D. Gas Valve fault.
D. Replace gas valve.
Refer to qualified personnel.
2. Ignition, but no Flame Sensing
Capabilities
A. Flame sensor is not in the flame. A. Ensure that the flame sensor is aligned over the
burner.
Refer to qualified personnel.
B. Flame sensor circuit is open.
B. Identify and correct loose connections.
Refer to qualified personnel.
C. Flame sensor rod is grounded.
C. Ensure that flame sensor is installed properly and
is not in contact with burner or heater jacket.
Refer to qualified personnel.
D. Flame sensor circuit is shorted.
D. Inspect flame sensor rod, wiring and connections
between sensor and power circuit board.
Refer to qualified personnel.
E. Flame sensor circuitry is not
E. Ensure that the green wire from the 6-pin
well grounded.
connector the power circuit board is tightly
attached to the ground screw with a star washer.
F. Low gas supply pressure.
F. Identify and repair incorrect supply pipe size or
pipeline blockage.
Refer to qualified personnel.
G. Heater is wired incorrectly
G. Ensure proper wiring. See wiring diagram in
manual or on door of heater for details.
Refer to qualified personnel.
H. Failed Sensor.
H. Replace flame sensor.
3. Rapidly Cycling Pressure Switch
A. Air leak in water line or pump.
A. Locate and repair leak.
B. Insufficient back-pressure to
B. Install restrictive fitting at pool/spa outlet.
heater.
Refer to qualified personnel.
FL 3
1. Flame Sensor Error
(flame detected when
A. Flame exists prior to
A. Carefully inspect heater for signs of fire damage.
no flame should exist)
ignition sequence.
Refer to qualified personnel.
B. Failed controller.
A. Replace controller.
Refer to qualified personnel.
FL 4
1. Igniter Failure
(igniter)
A. Igniter circuit is open
A. Check fuses on igniter wires. Identify and correct
loose connections or broken wires.
Refer to qualified personnel.
B. Element has a fine crack in it.
B. Measure room temperature resistance and ensure
value is in the correct range. See manual for
details.
Refer to qualified personnel.
C. Igniter fault.
C. Replace igniter.
Refer to qualified personnel.
