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SERVICE CODE CAUSE
REMEDY
FL 5
1. Brown-out Condition
(brown-out)
A. Incoming voltage is too low to
A.
No Service Required
. Heater will automatically
safely operate heater.
reset itself once proper voltage is restored. If error
persists,
Refer to qualified personnel.
B. Heater supply voltage is 115V
B. Reverse power conversion plug.
but power conversion plug is
plugged in on 230V side.
FL 6
1. Power Module Failure
(24V signal to gas
A. 24V signal is not being sent to
A. Replace power module board.
valve)
energize the gas valve.
Refer to qualified personnel.
FL 7
1. Remote Operation Circuit
(remote operation
A. Remote control switch circuit is
A. Identify and correct loose connections.
circuit)
open. (Controller is not in remote
Refer to qualified personnel.
control mode)
B. Remote control switch circuit is
B. Replace power module board.
not
open.
Refer to qualified personnel.
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.
10.1.General Information
A qualified professional technician must service
the Lite2 model LJ pool heater using Water Pik
Technologies 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
and strainers arent clogged, that there are no mis-
positioned water valves, that the gas or electric power
supplies arent shut off and that time clocks are
properly adjusted. Also be sure that there is no block-
age of the vent or louvers which supply combustion 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 25.
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
open end of a burner. When the gas flows into the
burner, a negative pressure is created at the opening
of the burner. This negative pressure pulls air into the
burner with the gas and mixes the two together. As
the gas/air mixture flow through the burner ports it is
ignited in the combustion chamber. Hot combustion
products then raise through a highly efficient heat
exchanger. Combustion products then enter a flue
collector and are directed to the outdoors through the
grate top of the heater or a vent pipe and cap.
10.3.Heater Components and Their
Operation
1.
Gas valve / Regulator
- The gas valve controls
gas flow into the manifold. It provides flow only
when the temperature controls require heat and
only if all safety controls enable operation. It is
also a
positive pressure regulator
. It regulates
the gas pressure in the manifold to specifications
addressed earlier in this manual. This is neces-
sary for proper operation of the burner system.
