A.O. Smith BTI-80 warranty Yellow Flame, Or Color

WARNING: DO NOT BY-PASSANY CONTROLS TO MAKE HEATER OPERATE. OPERATE ONLYAS WIRED FROM FACTORY.

TROUBLESHOOTING

For your safety, water heater service should be performed only by a qualified service technician.

Read the GENERAL SAFETY INFORMATION section first.

PROBLEM		POSSIBLE MALFUNCTION	SERVICE TO BE PERFORMED
	1) Blower will not run
	A)	“ON/OFF” control switch turned off	Turn switch to the “ON” position.
	B)	Blower unplugged	Plug blower back into 115 vac. outlet.
	C)	No power at outlet	Repair service to outlet.
	D)	“ON/OFF” switch defective	Replace switch.
	E)	Control harness defective	Replace control harness.
	F)	Blower motor defective	Replace blower and motor.
	2) Blower running, burner not on		Replace switch.
	A)	Fan not running fast enough to close	Check for low voltage, less than 102 vac., have
		air switch contacts	service checked and repaired.
	B)	Air pressure switch defective	Replace switch.
	C)	Gas valve defective	Replace gas valve.
	D)	Control harness defective	Replace harness.
NOTENOUGHOR	E)	Igniter defective	Replace igniter.
	F)	Unit has completed three trials to light	Reset cycle by turning switch off and then back on.
NO HOT WATER
		and failed	If unit does not light in three trials, call an authorized
			A.O. Smith service representative.
	3) Thermostat problems
	A)	Thermostat set too low	Turn temperature control higher.
	B)	Thermostat or ECO defective	Replace thermostat.
	C)	High limit control circuit open	Replace.
	4) Others
	A)	Heater undersized	Reduce hot water use.
	B)	Low gas pressure	Contact an authorized A.O.Smith service representative.
	C)	Incoming water is unusually cold	Allow more time for heater to re-heat.
	D)	Leaking hot water pipes or fixtures	Have plumber check and repair leaks.
	A)	Dirt in burner ports	Turn off heater and gas, clean burner head.
	B)	Combustion air path restricted	Clear area around heater and check under heater,
			remove any debris under heater and in openings in
YELLOW FLAME			bottom cover.
	C)	Not enough room air for proper	Refer to installation manual - Confined and Unconfined
		combustion	Space statements on page 4 and 5 for required
			openings.
CONDENSATION	A)	Water on the floor under heater	See “CONDENSATION.”
	Improperly sealed, hot or cold supply		Turn off heater & water, repair unit.
WATER LEAKS	connections, relief valve, drain valve or
	thermostat threads.
	Leakage from other appliances or water lines		Inspect other appliances near water heater.
	Condensation of flue products		Refer to “CONDENSATION.”
LEAKING T&P VALVE	Thermal expansion in closed water system		Install thermal expansion tank (DO NOT plug T&P valve).
	Improperly seated valve		Checkreliefvalveforproperoperation(DONOTplugT&Pvalve).
HOT WATER ODORS	High sulfate or mineral content in water		Drain and flush heater thoroughly, chlorinate, refill
OR COLOR	supply or iron or sulfate reducing bacteria in		and flush again then chlorinate water supply.
(Refer to CATHODIC	water supply
PROTECTION)

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