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ENGLISH
Jandy
®
Pro Series, JXi
™
Gas-Fired Pool & Spa Heater
|
Installation & Operation Manual
9.2 Service Diagnostic Messages
The controller monitors several functions of the heater. In the event of a malfunction, the controller will display a
FAULT message. The following table lists the Heater Service Messages along with potential causes and remedies.
Fault Message
Possible Cause
Remedy
FAULT-
PUMP
•
Status message indicating the filter
pump is currently turned OFF when the
heater system programmed in Maintain
Temp mode.
•
No Service Required
. This is normal when the control
is in a
Maintain Temp
mode.
NO FLOW
•
Pump is not running.
•
Low pump pressure.
•
Pressure switch fault.
•
Variable speed pump set too low.
•
Check breakers and power source, recheck wiring, set
time clock and current time.
•
Clean filter or clear blockage, check position of valve in
plumbing system.
•
Adjust or replace pressure switch.
•
Adjust variable speed pump.
•
Refer to qualified service personnel.
FAULT-
HIGH LIMIT
•
Water temperature in heater exceeds
the internal limit.
•
Limit switch fault.
•
Temperature control thermostat failure
•
Identify and correct loose connections
•
Replace switches.
•
Refer to qualified service personnel.
FAULT-
FUSELINK/FIELD
•
Vent temp limit fault
(240°C- Marked with red paint)
•
Identify and correct loose connections.
•
Replace vent temperature limit switch.
•
Refer to qualified service personnel.
FAULT-
CHECK IGNITION STEPS
•
Broken, split, pinched or disconnected
air pressure switch.
•
Fan not operating.
•
Fan running slow or premature fan
failure.
•
Air flow restricted at intake or discharge.
•
Broken igniter.
•
Low gas supply pressure.
•
No flame at burners.
•
Check tubing and replace if necessary.
•
Correct fault or replace fan.
•
Replace igniter.
•
Verify proper wiring for 120 VAC or 240 VAC.
•
Check for proper clearances around heater and for
adequate room ventilation if enclosed. Inspect for
blockage or restriction at discharge of flue.
•
Clean filter.
•
Check the circuit.
•
Check ignition control LED codes (see Section 9.3,
Ignition Control LED Service Codes).
•
Identify and repair incorrect supply pipe size or pipe line
blockage.
•
Identify and correct loose wiring connections, or
problems with igniter, gas valve, or ignition control.
•
Refer to qualified service personnel.
FAULT-
SHORTED H2O SENSOR
or
FAULT-
OPEN WATER SENSOR
•
Faulty wiring or connection.
•
Failed water temperature sensor.
•
Inspect water temperature sensor wiring.
•
Ensure sensor is connected correctly into the PCB.
•
Replace water temperature sensor.
•
Refer to qualified service personnel.
9.3 Ignition Control LED Service Codes
In addition to service diagnostic messages, the ignition controller has an LED light that flashes to indicate various
ignition control faults. The table below lists the LED codes and the corresponding fault description. To diagnose
possible cause and remedy, refer to Section 9.2, Service Diagnostic Messages.
LED Code
Fault Description
The LED light is on
continuously.
Ignition Control Fault. Refer to
qualified service personnel.
LED single flash.
Air flow fault.
LED double flash.
Flame exists when there is
NO call for heat. Refer to
qualified service personnel.
LED triple flash.
Ignition lockout (heater has
cycled three (3) times and has
locked out after the third try).
