Model LJ Pool and Spa Heater
Page 35
Troubleshooting Table
# Symptom Cause Remedy
1. Pump not A.No power A.Check circuit breakers and power source.
operating B. Pump defective B. Replace.
C.Incorrectly wired C.Recheck wiring including relay if using LJ controller internal
clock.
D. Pump relay defective D. Replace pump relay.
E. Current time not within E. Set time clock and current time.
time clock settings
F. Controller defective F. Replace controller.
2. Flame roll-out A.Blocked flue A.Remove blockage.
on start-up B. Igniter out of position (delayed ignition) B. Correct igniter position.
C. Blocked heat exchanger C. Clean and correct as necessary.
D. Refractory blanket out of place D. Correct or replace blanket as necessary.
E. Altered draft hood E. Install factory-provided draft hood.
F. Downdraft conditions F. Install draft hood.
3. Spillage at A.Cold chimney A.Allow heater to operate 5 minutes to create draft action.
draft hood B. Vent pipe pitches down to chimney B. Reinstall vent pipe to pitch up from heater to chimney.
C. Blocked chimney C. Remove blockage.
D. Draft hood altered D. Install factory-provided draft hood.
E. Prefabricated chimney with incorrect cap E. Install a Nationally Recognized Testing Lab (NRTL) listed vent
cap.
4. Flame has A.Low primary air A.Correct manifold pressure according to rating plate. Correct
lazy yellow tip orifice size if necessary (see parts list). Clean burner ports if
dirty.
5. Not enough heat A.Inadequate gas supply A.Gas meter too small. Gas line from meter to heater too small.
B. Low manifold gas pressure B. Gas pressure on heater manifold should be adjusted to
4.0"W.C. for natural gas, 9.0"W.C. for propane.
C. Heater size inadequate C. Replace with heater of higher input.
6. Heater pounding A.Water flow through heater too low A.Check temperature rise between inlet and outlet heater
or knocking piping. See Section 7.7 for recommended range of
temperature rise. If temperature rise is above the maximum
recommended, increase pipe size or pump capacity or
locate obstruction. Check for closed valve in system.
7. Heater condensing A.Low water temperature A.Flue product moisture will condense at the start-up until the
heater water temperature reaches the normal operating
conditions.
B. Heater plumbed backwards B. Correct plumbing.
8. Igniter lights but A.Gas valve not at “on” position A.Turn knob to “on” position.
main burners B. Air in gas line B. Cycle ignition sequence until air is out of the gas line.
will not come on C. Gas valve failed C. Replace gas valve.
Service code FL0, "open switch in the safety
circuit", will reset after the open switch has been reset
or replaced. The display will show the normal operat-
ing icons.
NOTE: If the pump is turned off while the
heater is running, service code FL0 will be
displayed because the water pressure switch
will detect the drop in water pressure and open
the safety circuit. When the pump is restarted,
the water pressure switch will close and the
heater will resume normal operation.
Service code FL1, "temperature sensor shorted",
will reset after the short has been repaired, or a new
sensor installed. The display will show the normal
operating icons.
To clear the FL2 service code, turn off the
heater by using the SELECT key to turn the heater to
the 'OFF' position and then turn it back to either
'POOL' or 'SPA'. The heater will now go back to the
normal operating mode. If there is a call for heat the
heater will attempt ignition again. If the ignition fails
again, contact a qualified technician to check the
heater.
All other service codes will need the attention of
a qualified technician to resolve the problem.
9.2.2 Resetting LJ Controller Service
Codes
The LJ controller will display service codes to
help in identifying fault conditions that effect the
operation of the heater (see Section 9.2.1).
There are four service codes that will reset
automatically once the fault condition has been re-
solved.
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