GSW 72090 manual Viii Troubleshooting Guide, Problem, Possible Causes, Correction

VIII) TROUBLESHOOTING GUIDE

Note: Troubleshooting must be done by qualified service personnel familiar with the start up and check out procedure.

Note: The latest version of the installation and operating instructions manual can be found at www.johnwoodwater- heaters.com

PROBLEM			POSSIBLE CAUSE(S)			CORRECTION
	1.		Pilot not lit	1.		Light pilot
	2.		Thermostat set too low	2.		Turn temp. dial to desired temperature
	3.		No gas	3.		Check with gas utility company
	4.		Dirt in the gas lines	4.		Notify utility-install trap in gas line
BURNER WILL NOT IGNITE	5.		Pilot line clogged	5.		Clean, locate source and correct
	6.		Main burner line clogged	6.		Clean, locate source and correct
	7.		Defective thermocouple	7.		Replace thermocouple
	8.		Defective gas control/thermostat	8.		Replace gas control/thermostat
	9.		Heater installed in a confined area	9.		Provide fresh air ventilation
SMELLY WATER	1.		Sulfur in the water	1.		Replace the anode with a special anode
	1.		Insufficient secondary air	1.		Provide ventilation to water heater
	2.		Low gas pressure	2.		Check with gas utility company
BURNER FLAME YELLOW-LAZY	3.		Flue clogged	3.		Clean, locate source and correct
	4.		Main burner line clogged	4.		Clean, locate source and correct
	5.		Heater installed in a confined area	5.		Proper fresh air ventilation
	6.		Obstruction in main burner orifice	6.		Clean or replace orifice
	1.		Air in gas line	1.		Bleed the air from the gas line
	2.		No gas	2.		Check with gas utility company
	3.		Dirt in gas lines	3.		Notify utility-install dirt trap in gas line
	4.		Pilot line or orifice clogged	4.		Clean, locate source and correct
	5.		Thermocouple connection loose	5.		Finger tighten: then 1/4 turn with wrench
	6.		Defective thermocouple	6.		Replace thermocouple
	7.		Cold drafts	7.		Locate source and correct
	8.		Gas control/thermostat ECO switch open	8.		Replace gas control/thermostat
PILOT WILL NOT LIGHT OR	9.		Door-mount temperature cut-off (TCO)	9.		Call a qualified service technician
REMAIN LIT			switch activated.	10.		Replace igniter or pilot assembly
	10.		Defective igniter or electrode
	11.		Flammable vapors incident, Flame GuardTM	11.		Replace water heater, eliminate flammable
			function activated			vapors source. Call a qualified service tech-
						nician
	12.		Low gas pressure	12.		Check with gas utility company
	13.		Improper installation of the quick connects	13.		Reset the TCO - switch. Check if the quick
			in the TCO-switch, loose connection or			connects are firmly inserted on TCO switch
			interrupted gas control leads.			contacts.
	1.	Thermostat set too high	1.	Set temperature dial to lower setting
		2.	Sediment or lime in tank		2.	Drain/Flush-Provide water treatment if
						needed
		3.	Water heater too small for job		3.	Install adequate size heater
		4.	Wrong piping connections		4.	Correct piping-dip tube must be in cold inlet
HIGH OPERATION COSTS					5.	Repair faucets
		5.	Leaking faucets		6.	Check with utility-repair at once
		6.	Gas leaks		7.	Advise customer
		7.	Wasted hot water		8.	Insulate piping
		8.	Long runs of exposed piping		9.	Insulate piping
		9.	Hot water piping in exposed wall		10.	Check dip tube. Replace if faulty
		10.	Leaks or cracks in dip tube
	1.	Clean, locate source and correct
			1.	Pilot line or orifice clogged
PILOT FLAME TOO SMALL		2.	Low gas pressure		2.	Check with gas utility company
		3.	Defective pilot		3.	Replace pilot

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