Waterpik Technologies pool/spa heater warranty LX/LT Heater Service Diagnostic Guide

LX and LT Pool Heaters Page 21

LX/LT HEATER SERVICE DIAGNOSTIC GUIDE

DISPLAY CODE

CAUSE

REMEDY

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)

	1.	Pump is not running.	1.	This is a normal display when the pump is OFF. No
				Service Required.
2.		Low pump pressure.		Clean filter or clear blockage/check position of valves
			2.
				in plumbing system.
3.		Device connected at “Fireman	3.	This is a normal display when a device connected
		Switch” terminal block is open.		to the “Fireman Switch” operates to open the
				safety circuit on the heater.
4.		Pressure switch fault.		Adjust or replace pressure switch.
			4.
				Refer to qualified service personnel.
1.		Water temperature in heater exceeds	1.	Identify and correct cause of overheating.
		the internal limit.		Refer to qualified service personnel.
2.		Limit switch fault.		Identify and correct loose connections or replace
			2.
				switches.
				Refer to qualified service personnel.
1.		Flue gas vent switch tripped.	1.	Verify proper fan operation. Check for restriction or
		(manual reset)		blockage of flue. Reset switch after problem is
				corrected.
2.		Vent switch fault.	2.	Identify and correct loose connections or replace
				switch.
				Refer to qualified service personnel.
3.		Fusible link fault		Identify and correct loose connections or replace
			3.
				fusible link.
				Refer to qualified service personnel.
1.		Broken, split, pinched or	1.	Check tubing and replace if necessary.
		disconnected fan/switch tubing.
2.		Fan not operating.		Correct fault or replace fan.
			2.
				Refer to qualified service personnel.
3.		Fan running slow or premature fan	3.	Verify proper wiring for 120VAC or 240VAC. Refer to
		failure.		qualified service personnel.
4.		Air flow restricted at intake or		Check for proper clearances around heater and for
			4.
		discharge.		adequate room ventilation if enclosed. Inspect for
				blockage or restriction at discharge or flue.
				Refer to qualified service personnel.
1.		Oscillating pump pressure.	1.	Clean filter or identify and repair cause of pump
				oscillation.
2.		Low gas supply pressure.		Identify and repair incorrect supply pipe size or
			2.
				pipe line blockage.
				Refer to qualified service personnel.
3.		No flame at burners.		Identify and correct loose wiring connections, or
			3.
				problems with igniter, flame sensor , gas valve, or
				ignition control.
				Refer to qualified service personnel.
	Not used in this model.
1.		Faulty wiring or connection	1.	Inspect Sensor wiring. Ensure sensor is plugged into
				back of control panel.
2.		Failed Sensor	2.	Replace Temperature Sensor.
				Refer to qualified service personnel

*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.