41
9. TROUBLESHOOTING
Mechanical
IMPORTANT NOTICE These instructions are intended
trained and experienced in the installation of this type
of heating equipment and related system components.
Installation and service personnel may be required by
not attempt to install this equipment nor attempt repairs
according to these instructions.
Problem Cause Solution
Harmonics, or whining noise
*Debris or restriction in system Locate the restriction and remove. Flush system and clean.
*Debris in gas line Remove debris or blow out gas line.
Low ow
Scale forming in heat exchanger-clean heat exchanger and using deliming kit (016281F)
and check pool pH and total alkalinity
Heater going on and off with
Water SW Open indication on
LCD or in Fault History
Dirty lter Clean or replace lter.
Low water level in pool Raise water level.
External bypass setting out of adjustment Adjust bypass
Valve opens but no ame visible Manifold pressure too low Increase manifold pressure (turn clockwise slightly).
Flame visible for a split second Ignition not being sensed
Replace ignition wire. Check connections. Increase manifold pressure (turn clockwise
slightly).
Liming or scale forming in
exchanger
Pool water See "Water Chemistry" on page 5.
Bypassing too much water Inspect bypass for movement, if no movement, replace.
Sooting
Low water temperatures. Maintain water body temperatures above 50ºF (10ºC).
*Air starvation Refer to installation instructions.
*Improper venting Follow recommended installation instructions.
*Insects or debris clogging burner intake ports Clean burners with a gentle application of compressed air, do not use a brush.
Yellow lazy ame
Air intake clogged or incorrect fan operation
Check for debris upstream of fan intake. Check intake air lter suction pressure, replace
lter if dirty.
*Insects or debris clogging burner intake ports Clean burners with a gentle application of compressed air, do not use a brush.
Air intake feedback to regulator disconnected
Check that tubing between air intake adapter and regulator is connected and free of
obstruction. See Figure 44.
Outer jacket very hot (paint
blistered)
*Broken refractory caused by shipping damage
or improper combustion
Replace refractory panels.
Excessive sooting of heat exchanger Determine cause of sooting & correct.
Hard lighting at startup Igniter faulty Replace igniter
Takes too long to heat pool or
spa
Under-sized heater
Calculate heating capacity of heater or refer to heater sizing chart.
(Heating Capacity = Htr. output (BTUH) ÷ Pool gallonage x 8.33)
This does not take into account heat loss due to weather.
Filter not running long enough Reset time clock.
Dirty lter Clean lter.
Gas line or meter undersized Refer to installation instructions.
Leaking at T&P gauge Overacid Replace T&P gauge and maintain proper water chemistry.
Leaking at heat exchanger Overacid Replace heat exchanger and maintain proper water chemistry.
Gasket brittle and leaking -
(overheated)
Refractory damage Replace refractory.
Sooted heater Determine cause of sooting and correct.
Combustion fan not running
“Fan 5 min Delay”,
“Fan Lockout” or "Fan RPM
Fault" indication
Fan relay Replace fan relay.
Fan Loose connection or failed motor.
Burned motor Incorrect wiring, replace blower.
Motor control failure Replace blower.
Heater turns on for less than 4
seconds (no display error)
Wiring Check for loose or broken (verify continuity) wiring/ground/ignition wire.
Incorrect supply wiring Check incoming power for correct voltage. There should be no power on the neutral line.
PC Board short Replace board if no strength signal is being detected.
Ignition not sensed Clean igniter with wire brush.
APPROVED
UNCONTROLLED DOCUMENT IF PRINTED
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