Jandy LJ User Manual

Page 36
FL 0
(open switch in the
safety circuit)
FL 1
(temperature sensor)
FL 2
(failed ignition)
1. Pressure Switch Opened
A. Pump is not running.
B. Low pump/water pressure.
C. Air is in the water line.
D. Pressure switch fault.
2. Hi Limit Switch Tripped
A. Water temperature in heater
exceeds the internal limit.
B. Limit switch fault.
3. Fusible Link Opened
A. Internal cabinet temperatures
exceed the fusible link limit.
B. Fusible link fault.
1. Temperature Sensor Error
A. Temperature sensor opened or
shorted.
B. Failed sensor.
1. No Ignition
A. Low gas supply pressure.
B. Air in gas line.
C. No gas flowing.
D. Gas valve fault.
2. Ignition, but no Flame Sensing
Capabilities
A. Flame sensor is not in the
flame.
B. Flame sensor circuit is open.
C. Flame sensor rod is grounded.
D. Flame sensor circuit is
shorted.
A. Turn pump on or check to see that external time
clock is synchronized with LJ controller time
clock.
B. Clean filter or clear blockage/check position of
valves in plumbing system.
C. Check for air leaks in plumbing system.
D. Adjust or replace pressure switch. Refer to
qualified personnel.
A. Identify and correct cause of overheating. Refer
to qualified personnel.
B. Identify and correct loose connections or replace
switches. Refer to qualified personnel.
A. Identify and correct cause of overheating. Refer
to qualified personnel.
B. Identify and correct loose connections or replace
fusible link. Refer to qualified personnel.
A. Check for loose connections and inspect sensor
wires and routing.
B. Replace temperature sensor. Refer to qualified
personnel.
A. Identify and repair incorrect supply pipe size or
pipeline blockage. Refer to qualified
personnel.
B. Shutdown heater and restart. If the heater does
not ignite, refer to qualified personnel.
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. Replace gas valve. Refer to qualified
personnel.
A. Ensure that the flame sensor is aligned over the
burner. Refer to qualified personnel.
B. Identify and correct loose connections. Refer to
qualified personnel.
C. Ensure that flame sensor is installed properly
and is not in contact with burner or heater jacket.
Refer to qualified personnel.
D. Inspect flame sensor rod, wiring and connections
between sensor and power circuit board. Refer
to qualified personnel.
LITE2 LJ CONTROLLER HEATER SERVICE DIAGNOSTIC GUIDE
SERVICE CODE CAUSE REMEDY

Jandy LJ Specifications

General

Brand	Jandy
Model	LJ
Category	Swimming Pool Heater
Language	English