Jandy JXi400P User Manual

Page 40
ENGLISH
Jandy
®
, JXi
™
Gas-Fired Pool & Spa Heater
|
Installation & Operation Manual
• If the heater is equipped with a pressure relief valve,
clean any accumulated corrosion and make sure that
water runs freely when lever is lifted.
• Inspect combustion chamber and blower exterior for
corrosion and indication of improper operation.
• Inspect electrical controls for deterioration. Repair
and replace as necessary.
• Visually check the main burner ame. Remove the top
of the heater to inspect the sight glass. See Figure 25.
View With Heater Top Panel Removed
Sight Galss
Figure 25. Remove Heater Top to View Sight Glass
Section 11. Troubleshooting
11.1 Common Problems
Zodiac Pool Systems LLC strongly recommends that you
call a qualied service technician to perform all service
and repairs on the heater. To locate a licensed or qualied
technician service company, call Jandy Technical Support
at 800.822.7933, or visit www.jandy.com.
The following table lists some of the most common
problems when running the heater. Most problems
occur when the heater is started for the rst time after
installation or at spring start-up.
Symptom Possible Cause Remedy
Pump not operating • No power.
• Pump defective.
• Incorrectly wired.
• Time clock settings not synchronized
with actual time.
• Check circuit breakers and power source.
• Replace the pump.
• Recheck wiring.
• Check time clock setting.
Unstable combustion-
(1) heater turns off and on
(2) heater ignites slowly
(3) ame lifts and goes out
(4) short yellow streaked ame
• Wrong gas.
• Lean fuel/air mixture— low supply
pressure.
• Lean fuel/air mixture— too much
combustion air.
• Rich fuel/air mixture— high manifold
pressure.
• Rich fuel/air mixture— too little
combustion air.
• Make sure the gas supply matches the gas type
indicated on the rating plate.
• Correct gas supply inlet pressure to:
- (NATURAL GAS) 4.0 in W.C. min - 10.5 in W.C. max
- (PROPANE) 4.0 in W.C. min - 14.0 in W.C. max
• Offset pressure should be -0.2 in W.C. Use a digital
differential manometer to verify correct offset pressure.
Adjust offset pressure as needed.
• Connect a digital differential manometer to blower throat
and gas valve port to obtain differential. Make sure the
differentialvaluefallswithinthespeciedrangeforthe
heater size.
• Gas meter too small.
• Gas line from meter to heater too small.
• Check blower inlet grill for obstruction.
Not enough heat
(1) heater is slow to heat up
(2) heater not maintaining set
temperature
(3) Low temperature rise
• Heater size inadequate.
• Filter pump not running long enough.
• Thermal regulator valve (TRV) is
opening early or is permanently open.
• Heater plumbed backwards.
• Replace with heater of higher output.
• Replace TRV.
• Heater is condensing. Flue product moisture will
condense at the start-up until the heater water
temperature reaches the normal operating conditions.
• Correct the plumbing.
Heater pounding or knocking • Waterowthroughheatertoolow.
• Failed Thermal Regulating Valve (TRV).
• Look for obstruction or closed valve in system.
• Check for damaged internal bypass.
• Variable speed pump set too low
• Dirtylterorbaskets

Jandy JXi400P Specifications

General

Brand	Jandy
Model	JXi400P
Category	Swimming Pool Heater
Language	English