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SECTION 10.
Professional Maintenance and
Service
WARNING
SERVICING SAFETY
Some of the servicing procedures for the Lite2
model LJ pool heater are hazardous because
they involve fuel gas, electricity, moving parts
and procedures which require testing or
temporary bypass of safety controls. For this
reason, the heater must be serviced only by a
qualified professional service technician.
IMPROPER SERVICE HAZARD
The Lite2 model LJ pool heater incorporates
unique design features. Incorrect service of this
heater can result in personal injury or damage
to property. To avoid such hazards, the heater
must be serviced only by a qualified
professional service technician.
AVERTISSEMENT
PRÉCAUTIONS LORS DES RÉPARATIONS
ET DE L’ENTRETIEN
Certaines procédures d’entretien et de
réparation des appareils de chauffage à LJ
présentent des dangers, car elles mettent en
jeu des gaz combustibles, des composants
électriques, des pièces mobiles et des
procédures qui nécessitent des mises à l’essai
ou la dérivation temporaire des commandes de
sécurité. Pour cette raison, l’appareil de
chauffage doit être entretenu et réparé
uniquement par un technicien professionnel
qualifié.
DANGERS D’UN ENTRETIEN INADÉQUAT
Les appareils de chauffage à LJ comportent
des caractéristiques techniques uniques. Une
réparation ou un entretien inadéquat peut
entraîner des blessures corporelles ou des
dommages à la propriété. Pour cette raison,
l’appareil de chauffage doit être entretenu et
réparé uniquement par un technicien
professionnel qualifié.
10.1 General Information
A qualified professional technician must service
the Lite2 model LJ pool heater using Jandy Pool
Products, Inc. service procedures. Before calling for
service, however, the owner should check for obvious
problems. The other components in the pool system,
including pump, filters and strainers, water valves, gas
supply, electrical power and time clocks, have an
effect on heater operation.
Confirm that the LJ heater control is set to
'POOL' or 'SPA' and that the corresponding tempera-
ture limit is set high enough to make the heater oper-
ate. Make sure the pump is operating, that the filter is
clean and strainers are not clogged, that there are no
mis-positioned water valves, that the gas or electric
power supplies are not shut off and that time clocks
are properly adjusted. Also be sure that there is no
blockage of the vent or louvers which supply combus-
tion air to the burners.
10.2 Natural-Draft Combustion System
The Lite2 model LJ pool heater has an atmo-
spheric combustion system. This system is illustrated in
Figure 26.
As the heated exhaust gases rise out of the
combustion chamber, flow is created through the
system and fresh combustion air is drawn into the
heater through the louvers cut into the front and sides
of the heater. Gas is forced through an orifice into the
Service code FL3, "flame detected when no
flame should exist", will reset after the problem has
been resolved.
Service code FL5, "brown-out condition exists",
will also reset after the condition has been resolved.
However, the reset may take up to 3 minutes. The LJ
controller checks the power supply voltage every 3
minutes. If the supply voltage drops below 85% of the
nominal supply voltage, the display will show the FL5
service code and the heater will not start the ignition
sequence. The controller will check the supply voltage
again 3 minutes later. If the low voltage condition still
exists the FL5 service code will remain. If the actual
supply voltage is above 85% of the nominal supply
voltage, the service code will clear automatically from
the display and the heater will resume normal opera-
tion. If the heater was in either 'POOL' or 'SPA' mode
when the brown-out condition was detected, it will
remain in that mode when the condition is resolved. If
the water temperature is less than the thermostat
setting, the ignition sequence will start automatically
and the heater will operate normally.
Once any other service code has been displayed,
it will need to be reset after the fault condition has
been resolved. Once the problem has been identified
and repaired, press the SELECT key
repeatedly to turn the heater off . Then
press the SELECT key again to set the controller to
either 'POOL' or 'SPA'. The controller should send the
heater through the ignition sequence and the heater
will operate normally.
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