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SECTION 5 / TROUBLE SHOOTING GUIDE
IMPORTANT NOTICE
These instructions are primarily intended for the use of qualified personnel specifically trained and experienced
in the installation of this type of heating equipment and related system components. Installation and service
personnel may be required by some states to be licensed. Persons not qualified shall not attempt to install this
equipment nor attempt repairs according to these instructions.
MECHANICAL (FOR QUALIFIED SERVICE PERSONNEL ONLY)
PROBLEM
Harmonics, or whining noise.
Heater going on and off
continously.
Liming or scale forming on
heat exchanger.
Sooting
Pilot outage.
Yellow lazy flame
Outer jacket very hot
(paint blistered)
Takes long time to heat
pool or spa.
CAUSE
U.G. inoperative..........................
*Debris or restriction in system........ Locate the restriction and remove. Flush system
*Debris in gas line.........................
Low flow....................................
Dirty filter..................................
Low water level in pool.................. Raise water level.
External bypass setting out of
adjustment................................
*Pressure switch out of
adjustment................................
Pool water.................................
High flow rates...........................
*Air starvation..............................
*Improper venting.........................
*Insects or debris clogging
burner intake ports......................
Low gas pressure........................
Restricted pilot...........................
Weak pilot generator....................
Low gas pressure........................
*Insects or debris clogging
burner intake ports......................
*Broken refractory caused by
shipping damage or improper
combustion................................
Excessive sooting of heat
exchanger.................................
Calculate temperature in °/hr......... Heat rise (°/hr.)=
Filter not running long enough........ Reset time clock.
Dirty filter...................................
Gas line or meter undersized......... Refer to installation instructions.
(* Usually occurs on initial start-up.)
26
SOLUTION
Check movement by putting in hot water (100°F
or higher). If no movement, replace.
and clean.
Remove debris or blow out gas line.
Scale forming in heat exchanger - clean heat
exchanger and check pool pH and total alkalinity.
Backwash filter.
Adjust bypass
Adjust pressure switch
See Water Chemistry on page 2.
Reduce by adding manual bypass valve and
adjust by putting thermometer in header (1/4"
NPT) drain opening. Set bypass so thermometer
reads between 105° and 110°F.
Refer to installation instructions.
Follow recommended installation instructions.
Clean burners.
Adjust gas pressure.
Clean pilot.
Replace pilot.
Adjust gas pressure.
Clean burners.
Replace refractory panels.
Determine cause of sooting & correct.
Heater Output
Pool gallonage x 8.33
or refer to heater sizing chart.
This does not take into account heat loss due
to weather.
Clean filter.
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