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Outer jacket very hot
(paint blistered)
*Broken refractory caused by
shipping damage or improper
combustion…………………………..
Excessive sooting of heat
exchanger…………………………...
Calculate temperature in °F/hr……...
Filter not running long enough……....
Dirty filter……………………………..
Gas line or meter under-
sized………..................................
Bypassing too much water………....
U/G not functioning……………….....
Replace refractory panels.
Determine cause of sooting &
correct.
Heat rise (°F/hr.) = Htr.output
Pool gallonage x 8.33
or refer to heater sizing chart.
This does not take into account heat
loss due to weather.
Reset time clock.
Clean filter.
Refer to installation instructions.
Inspect bypass for movement, if no
movement, replace.
Replace if no movement when
heated.
Replace well and maintain water
chemistry properly.
Replace heat exchanger and main-
tain chemistry properly.
See pressure switch adjustment.
Replace refractory.
Determine cause of sooting and cor-
rect.
Liming
Leaking at well.
Leaking at heat exchanger.
Gasket brittle and leaking-
(overheated).
Takes long time to heat pool
or spa
Overacid…………………………......
Overacid……………………………...
Heater running after pump
shuts off……………………………...
Refractory damage………………….
Sooted heater………………………..
*Usually occurs on initial start-up
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