mark. The water heater will continue to operate during an Alert condition but the water heater must be serviced by a qualified service agent as soon as possible.

Resetting Control System Lock Outs

To reset the control system from a lock out condition; turn the power supply off for approximately 20 seconds and then back on. Keep in mind; if the condition that caused the Fault has not been corrected, the control system will continue to lock out.

Diagnostic Checks

Note: If you are not qualified and licensed or certified as required by the authority having jurisdiction to perform a given task do not attempt to perform any of the diagnostic or service procedures described in the following section.

If you do not understand the instructions in the following section do not attempt to perform any procedures.

Call the technical support phone number listed on the back cover of this manual for further technical assistance or to locate a qualified service agent in your area.

Electrical Shock Hazard

•Turn off power to the water heater before performing any service.

•Label all wires prior to disconnecting when performing service. Wiring errors can cause improper and dangerous operation.

•Verify proper operation after servicing.

•Failure to follow these instructions can result in personal injury or death.

The following section, Fault And Alert Messages lists some of the messages the control system will display on the LCD when there are operational problems. This is not a complete list. Along with each of the Fault and Alert messages described there will be a list of possible causes and things to check and repair.

Only qualified service agents, as defined in Qualifications using appropriate test equipment, should perform any service procedures on the water heater.

Jumping out control circuits or components can result in property damage, personal injury or death.

•Service should only be performed by a qualified service agent using proper test equipment.

•Altering the water heater controls and/or wiring in any way could result in permanent damage to the controls or water heater and is not covered under the limited warranty.

•Altering the water heater controls and/or wiring in any way could result in altering the ignition sequence allowing gas to flow to the main burner before the hot surface igniter is at ignition temperature causing delayed ignition which can cause a fire or explosion.

Any bypass or alteration of the water heater controls and/or wiring will result in voiding the appliance warranty.

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A.O. Smith 100 Power Vent DV Series 120, 317443-000 instruction manual Resetting Control System Lock Outs, Diagnostic Checks
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100 Power Vent DV Series 120, 317443-000 specifications

The A.O. Smith 317443-000,100 Power Vent DV Series 120 is an advanced water heating solution designed to enhance efficiency and performance for residential applications. As part of A.O. Smith's renowned lineup, this model embodies the company's commitment to innovation and energy conservation.

One of the main features of the DV Series 120 is its power venting capability. This technology allows for flexible installation options, as it can vent vertically or horizontally, accommodating various home configurations. It utilizes a fan-assisted venting system, which efficiently expels exhaust gases, ensuring safe operation even in tight spaces.

The unit's energy efficiency is another standout characteristic. Equipped with a high-efficiency gas burner, the DV Series 120 optimizes fuel consumption, resulting in lower utility bills while providing reliable hot water when needed. Its impressive Energy Factor (EF) ratings make it an environmentally friendly choice, aligning with modern standards for green building practices.

Durability is also a significant focus of the A.O. Smith 317443-000,100 Power Vent model. Constructed with a glass-lined tank and a robust anode rod, this water heater is designed to resist corrosion and extend its lifespan. This construction enhances performance reliability while minimizing maintenance needs, making it a smart investment for homeowners.

Smart technologies are integrated into the DV Series 120, featuring an intelligent control system that provides various operational insights. The built-in diagnostic features allow homeowners to monitor performance and identify potential issues early, reducing the likelihood of unexpected failures. This control system can also enable more precise temperature management, enhancing both comfort and efficiency.

Safety is paramount in the design of the A.O. Smith 317443-000,100. The unit comes equipped with safety features such as a built-in flame rollout sensor and an automatic shut-off system to protect against potential hazards. These features ensure peace of mind for users, allowing them to confidently rely on their hot water supply.

In summary, the A.O. Smith 317443-000,100 Power Vent DV Series 120 stands out as a high-efficiency water heating solution, combining innovative venting technologies, durability, smart features, and safety mechanisms. This model is an ideal choice for homeowners seeking a reliable and efficient hot water system that meets modern energy standards.
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