Service Diagnostic Messages - Jandy JXi 200 Installation And Operation Manual

Jandy , JXi Gas-Fired Pool & Spa Heater
® ™
Symptom
Igniter lights but heater does
not fire

11.2 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
CHECK FLOW
FAULT-
HIGH LIMIT
FAULT - HIGH FLUE
TEMPERATURE
FAULT-
CHECK IGN CONTROL
FAULT-
SHORTED H2O SENSOR
or
FAULT-
OPEN WATER SENSOR
FAULT-
PUMP
AUX Monitor
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Installation & Operation Manual
Possible Cause
• Gas valve is not ON.
• Air in gas line.
• No power to gas valve.
• Low gas pressure/volume.
• High burner throat pressure.
• Gas valve failed.
Possible Cause
• Pump is not running.
• Low pump pressure.
• Pressure switch fault.
• Variable speed pump set too low.
• Water temperature in heater exceeds
the internal limit.
• Limit switch fault.
• Flue temp limit fault
• Broken, split, pinched or disconnected
air pressure switch tubing.
• Fan not operating.
• Fan running slow
• Premature fan failure.
• Air flow restricted at intake or discharge.
• Broken igniter.
• Low gas supply pressure/volume.
• No flame at burner.
• Faulty wiring or connection.
• Failed water temperature sensor.
• Status message indicating the filter
pump is currently turned OFF when the
heater system programmed in Maintain
Temp mode.
ENGLISH
Remedy
• Flip the switch to "on" position.
• Cycle ignition sequence until air is out of the gas line.
• Check controls for proper operation.
• Check supply pressure/volume and verify proper gas
supply pipe size.
• Replace gas valve.
NOTE: Gas valve failures are extremely rare. Please
confirm this as the root problem before replacing.
Remedy
• 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.
• Make sure return eyeball fittings are installed on the
wall of the pool.
• Adjust or replace pressure switch.
• Adjust variable speed pump.
• Refer to qualified service personnel.
• Inspect vent for obstructions or blockages.
• Indoor installations, check vent pipe for bird, insect or
rodent activity that could cause a blockage.
• Replace switches.
• Refer to qualified service personnel.
• Identify and correct loose connections.
• Replace flue sensor.
• Refer to qualified service personnel.
• 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.
• Check ignition control LED codes (see Section 10.3,
Ignition Control LED Service Codes).
• Verify that the size, length and number of elbows on the
gas supply line meet national codes.
• Identify and correct loose wiring connections, or
problems with igniter, gas valve, or ignition control.
• Refer to qualified service personnel.
• Inspect water temperature sensor wiring.
• Ensure sensor is connected correctly into the power
interface board (PIB).
• Replace water temperature sensor.
• Refer to qualified service personnel.
• No Service Required. This is normal when the control
is in a Maintain Temp mode.
• Check VersaFlo
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