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Step One
Experience has shown that most complaints about
heaters not coming on have nothing to do with the
heater directly. Usually, something has reduced water
flow through the heater system to shut down the heater.
Any of the following could cause the heater to not
come on. Check these items first.
1.
Be sure the heater has been properly installed
(see Section 2).
2.
Make sure the filter is clean. Buildup on the filter
element can lower water pressure through the
heater, causing it to shut off.
3.
Make sure the pump is working.
4.
Verify the main drain and skimmer valves are
open.
5.
Make sure the gas valve is ON and there is gas
pressure in the line.
6.
Carefully inspect all electrical connections and
wiring. Finding a loose connection or a charred
wire can save a lot of time and money.
7.
Verify that the electrical circuit serving the heater
is ON, and there is power to the heater.
8.
Make sure the switch on the heater control panel
is pointing at one of the temperature controllers.
9.
Verify that the temperature controller is set high
enough to call for heat.
If the pump is circulating water, and the rest of
these items check out, the trouble could be in the heater
control system. Go to the next step.
Step Two
NOTE:
Keep the filter pump running.
Testing Transformer, Safety Fuses and Fusible
Link, Limit Switches, and Pressure Switch (An
Alternating Current (AC) voltmeter with a 50 volt
range is required).
a. Transformer
Clip one lead from the voltmeter to the connec-
tor located where the blue wire from the transformer
connects to 24V on the ignition control. It may be
helpful to install a double male connector between the
blue wire and the and the 24V tab on the ignition
control. This lead will stay connected to this terminal
Figure 18. Model LC (Australia) Pictorial Wiring Diagram
