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SECTION 5/TROUBLESHOOTING 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)
(*Usually occurs on initial start-up)
PROBLEM
Harmonics, or whining noise.
Heater going on and off continuously.
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………………
* Debris in gas line………………………………
Low flow………………………………………
Dirty filter………………………………………
Low water level in pool………………………
External bypass setting out of
adjustment…………………………………….
* Pressure switch out of
adjustment……………………………………..
Pool water………………………………………
High flow rates…………………………………
U.G. Inoperative………………………………
* 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…………………
Filter not running long enough………………
Dirty filter………………………………………
Gas line or meter undersized…………………
SOLUTION
Check movement by putting in hot water (110°F
or higher). If no movement, replace.
Locate the restriction and remove. Flush system
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.
Raise water level.
Adjust bypass
Adjust pressure switch
See Water Chemistry 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.
Check movement by putting in hot water (110°
or higher). If no movement, replace.
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.
Heat rise (°/hr.) = Heater 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.