Troubleshooting

Please check guidelines below. 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	POSSIBLE SOLUTION
NO HOT WATER	1)	No pilot
		A.	No gas to pilot	Check gas supply	Turn on, check pressure
				Check gas valve	Turn on or replace if needed
				Check pilot orifice for obstruction	Clean with air or replace
				Check pilot tube for kink or leaks	Replace pilot tube
		B.	Pilot will not stay lit	Check gas pressure
				Check thermostat MV drop-out voltage
				Check thermocouple connection and	Tighten if loose, replace
				MV output	as necessary
				Check thermocouple placement in pilot flame	3/8- should be in flame
				Check pilot for proper flame	Change pilot orifice
				Check ECO operation	Replace gas valve
				Check for air in pilot tube	Bleed as necessary

		C.	Pilot blows out	Leaking joints	Check all vent joints for proper seal.
					Make sure to check inner and outer
					pipe and check rear air tube seals.
					Refer to installation manual.
				Check for proper vent cap	Install A. O. Smith provided vent cap
				Check for bent, missing, or mislocated
				pilot shield (natural gas units only)	Replace or reposition
				Check outer door seal	Replace gasket if missing
					Tighten screws if loose
					Install gasket properly if misinstalled
NOT ENOUGH	1)	Incorrect burner orifice		Check orifice size	Replace with correct size
HOT WATER	2)	No gas to main burner		Check gas supply	Correct as needed
				Check thermostat operation	Replace as needed
	3)	Heater too small		Confirm sizing requirements	Replace with larger heater, add
					another heater, or decrease
					water usage.
YELLOW FLAMES	1)	Excessive or low gas		Check gas pressure
OR SOOT		pressure
	2)	Combustion air restricted		Check vent for restrictions	Correct as necessary
				Check venting for extra piping	Re-install as recommended in
					the installation manual
CONDENSATION	1)	Water on floor under heater		See page 21 “CONDENSATION”

BURNER WILL	1)	Low gas pressure		Check gas supply pressure
NOT STAY LIT
NOT STAY LIT				Check thermostat operation
	2)	Downdraft or		Check for proper vent cap	Install proper vent cap
			backdraft condition	Check location of heater	Re-install in correct location
				Check for proper vent sealing	Reseal venting
				Check top and/or bottom air supply	Seal as necessary
				box for air leaks
				Check outer door seal	Replace gasket, tighten screws
					or re-install gasket as necessary

SDV, FDVT, FDV specifications

A.O. Smith is a leading name in the water heating industry, known for its innovative products and commitment to quality. Among its extensive lineup, the FDV, FDVT, and SDV series stand out due to their advanced features and technologies designed to enhance performance and efficiency.

The FDV series represents a revolution in traditional water heating solutions. These direct vent water heaters are designed to provide hot water on demand while minimizing energy consumption. The FDV models utilize a dual venting system, allowing for the efficient expulsion of combustion gases outside the home while drawing in fresh air for the combustion process. This design increases efficiency by ensuring optimal combustion and improves safety by reducing the risk of indoor air contamination.

The FDVT series builds upon the innovative features of the FDV, integrating a tankless design that provides unlimited hot water. This makes it an ideal choice for households with higher hot water demands. The FDVT models use high-efficiency burners and advanced heat exchangers to deliver hot water quickly and consistently, adapting to varying flow rates. They are also equipped with intelligent control systems that monitor water usage patterns and adjust operation accordingly, optimizing energy efficiency without sacrificing performance.

The SDV series caters to those looking for a reliable and efficient storage tank water heater. With a robust construction and reliable design, these water heaters are built to last. The SDV models are designed with high-quality insulation to minimize heat loss, making them energy-efficient options for storing hot water. Additional features include built-in safety mechanisms, such as temperature and pressure relief valves, ensuring safe operation at all times.

A.O. Smith's commitment to innovation is evident in their use of cutting-edge technologies across these series. Both the FDV and FDVT models incorporate sophisticated electronic controls, enabling features like scheduling and remote access for greater convenience. They are compatible with smart home systems, allowing users to monitor and manage water heating remotely.

In terms of energy efficiency, models within these series are designed to exceed industry standards, often qualifying for energy rebates and incentives in various regions. With features such as modulating burners, they adjust the energy input based on demand, significantly reducing operational costs.

Overall, A.O. Smith's FDV, FDVT, and SDV series represent leading-edge solutions in water heating, combining efficiency, safety, and advanced technology to meet the diverse needs of modern households. Whether seeking endless hot water or reliable storage solutions, these series offer unparalleled options that prioritize performance and sustainability.

A.O. Smith FDVT, SDV owner manual Troubleshooting

Models: SDV FDVT FDV

TROUBLESHOOTING

HOT WATER

OR SOOT

NOT STAY LIT

SDV, FDVT, FDV specifications