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Installation and Operation Manual
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Jandy® Legacy™ Model LRZE Pool/Spa Heater by Zodiac®
display Fault
cause
Remedy
Display shows
no FLoW
1. Pump is not running.
2. Low pump pressure.
3. Pressure switch fault.
1. This is a normal display when the pump is
oFF
.
no
Service Required
.
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 switch (fusible link) fault.
2. Vent temperature limit fault.
1. Identify and correct loose connections or replace
roll-out switch (fusible link). Check for and correct any
downdraft condition. Refer to qualified service personnel.
2. Identify and correct loose connections or replace vent
temperature limit. Refer to qualified service personnel.
FauLt-
cHecK iGn contRoL
1. Air flow restricted at intake or discharge.
2. Oscillating pump pressure.
3. Low gas supply pressure.
4. No flame at burners.
1. 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.
2. Clean filter or identify and repair cause of pump oscillation.
3. Identify and repair incorrect supply pipe size or pipe line
blockage.
4. 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 9. Legacy Model LRZ electronic Heater Service diagnostic Guide
Summary of Contents for LRZ Electronic
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