Page 42
ENGLISH
Jandy
®
LXi
™
Model Pool and Spa Heater by Zodiac
®
|
Installation and Operation Manual
DISPLAY FAULT
CAUSE
REMEDY
Display shows
FAULT-
PUMP
1. Pump is not running.
1. This is a normal display when the control is in a
Maintain
Temp
mode.
No Service Required
.
Display shows
NO FLOW
1. Pump is not running.
2. Low pump pressure.
3. Pressure switch fault.
1. Check breakers and power source, recheck wiring, set time
clock and current time.
2. Clean filter or clear blockage, check position of valve
in plumbing system.
3. Adjust or replace pressure switch. Refer to qualified
service personnel.
FAULT-
HIGH LIMIT
1. Water temperature in heater exceeds the
internal limit.
2. Limit switch fault.
1. Verify function of high limit switches. Perform temperature
rise test. Identify and correct cause of overheating. Refer to
qualified service personnel.
2. Identify and correct loose connections or replace switches.
Refer to qualified service personnel.
FAULT-
FUSELINK/FIELD
1. Roll-out (fusible link) fault. (152°C-No
Marking) (DO NOT interchange with the
240°C. vent temp limit
2. Vent temp limit fault. (240°C-
Marked with red paint) (DO NOT
interchange with the 152°C Roll-out
switch).
1. Identify and correct loose connections or replace Roll-out
(fusible link) switch. Refer to qualified service personnel.
2. Identify and correct loose connections or replace vent
temperature limit switch. Refer to qualified service
personnel.
FAULT-
CHECK IGN CONTROL
1. Broken, split, pinched or disconnected
fan/switch tubing.
2. Fan not operating.
3. Fan running slow or premature fan failure.
4. Air flow restricted at intake or discharge.
5. Oscillating pump pressure.
6. Low gas supply pressure.
7. No flame at burners.
1. Check tubing and replace if necessary.
2. Correct fault or replace fan. Refer to qualified service
personnel.
3. Verify proper wiring for 120 VAC or 240 VAC. Refer to
qualified service personnel.
4. Check for proper clearances around heater and for
adequate room ventilation if enclosed. Inspect for
blockage or restriction at discharge of flue. Refer to
qualified service personnel.
5. Clean filter or identify and repair cause of pump oscillation.
6. Identify and repair incorrect supply pipe size or pipe line
blockage.
7. Identify and correct loose wiring connections, or problems
with igniter, flame sensor, gas valve, or ignition control.
Refer to qualified service personnel.
FAULT-
SHORTED H2O SENSOR
or
FAULT-
OPEN WATER SENSOR
1. Faulty wiring or connection.
2. Failed sensor.
1. Inspect sensor wiring. Ensure sensor is connected into
Power Interface Board.
2. Replace temperature sensor. Refer to qualified service
personnel.
Table 12. LXi Heater Service Diagnostic Guide
