Heater Service Diagnostic Guide - Jandy pool/spa heater Installation And Operation Manual

D C
ISPLAY ODE
PRESS SW *
(pressure switch)
HI LIM SW
(hi-limit switch)
EXT SW 1
(extra switch 1)
AIR FLO SW
(air flow switch)
AGS
(automatic gas shut-down)
EXT SW 2
(extra switch 2)
TEMP SENSOR*
(temperature sensor)
* NOTE: When these messages are displayed, the Controls are still operable and the heater will operate normally when the displayed condition is
remedied. Faults (shown above without an asterisk (*) will shut down the Heater and Control Panel and a flashing "SERVICE" is displayed.
LX/LT H S
EATER ERVICE
C
AUSE
1. Pump is not running.
2. Low pump pressure.
3. Device connected at "Fireman
Switch" terminal block is open.
4. Pressure switch fault.
1. Water temperature in heater exceeds
the internal limit.
2. Limit switch fault.
1. Flue gas vent switch tripped.
(manual reset)
2. Vent switch fault.
3. Fusible link fault
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.
1. Oscillating pump pressure.
2. Low gas supply pressure.
3. No flame at burners.
Not used in this model.
1.
Faulty wiring or connection
2.
Failed Sensor
D G
IAGNOSTIC UIDE
1. This is a normal display when the pump is OFF. No
Service Required.
2. Clean filter or clear blockage/check position of valves
in plumbing system.
3. This is a normal display when a device connected
to the "Fireman Switch" operates to open the
safety circuit on the heater.
4. Adjust or replace pressure switch.
Refer to qualified service personnel.
1. 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.
1. Verify proper fan operation. Check for restriction or
blockage of flue. Reset switch after problem is
corrected.
2. Identify and correct loose connections or replace
switch.
Refer to qualified service personnel.
3. Identify and correct loose connections or replace
fusible link.
Refer to qualified service personnel.
1. Check tubing and replace if necessary.
2. Correct fault or replace fan.
Refer to qualified service personnel.
3. Verify proper wiring for 120VAC or 240VAC. 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 or flue.
Refer to qualified service personnel.
1. Clean filter or identify and repair cause of pump
oscillation.
2. Identify and repair incorrect supply pipe size or
pipe line blockage.
Refer to qualified service personnel.
3. Identify and correct loose wiring connections, or
problems with igniter, flame sensor , gas valve, or
ignition control.
Refer to qualified service personnel.
1. Inspect Sensor wiring. Ensure sensor is plugged into
back of control panel.
2. Replace Temperature Sensor.
Refer to qualified service personnel
R
EMEDY