Service, Ignition Module System | A.O. Smith SBD 30 150 guide

7.Lower container, you may have to place the container on its empty carton to prevent the UN•LIME from flowing back into the container.

8.Let UN•LIME remain in the heater for 5 minutes and then lower the container to the "Drain" Position, see Figure 15.

9.Deliming activity is indicated by foaming on the surface of the UN•LIME. If there is deliming activity, repeat steps 6 thru 8.

Normally, lime removal will be completed within one hour. Severe build-up of lime may take longer than an hour to complete descaling.

Note: To check UN•LIME for continued use, place some scale or white chalk in a glass with a small amount of UN•LIME. If the material is vigorously dissolved by the UN•LIME, it can be reused; if not, the UN•LIME should be replaced.

FIGURE 15

IGNITION MODULE SYSTEM

Before calling your service agent, the following checklist should be examined to eliminate obvious problems from those requiring replacement or servicing.

—Check that “main manual gas shutoff valve” is fully open and that gas service has not been interrupted.

—Check that after following the appliance OPERATING INSTRUCTIONS, the “Top Knob” of the appliance gas valve is in “ON” position.

—Check electrical supply to the appliance for possible blown (or tripped) fusing or power interruption.

—Is the water temperature in tank below the thermostat dial setting on the appliance thermostat (calling for heat)?

—It is possible that the high limit (E.C.O.) has functioned to shut off the appliance. See FEATURES — Water Temperature Control for reset procedure. Contact your serviceman if limit continues to function to shut off appliance.

SYSTEM DIAGNOSTICS

Your water heater is equipped with an ignition module that incorporates a diagnostic system to assist in troubleshooting the appliance. The indicator codes on the ignition module are as follows:

1 flash	System lockout (retries or cycles exceeded)

2 flashes	Pressure switch stuck close

3 flashes	Pressure switch stuck open

4 flashes	Open on high temperature limit switch (eco)

6 flashes	115 volt AC power reversed (check polarity)

7 flashes	Low flame sense signal (make sure flame
	sensor is in burner flame)

8 flashes	Check ignitor

continuous flash -> continuous flame sensed > 5 seconds without gas valve

continuous on -> internal control failure - replace ignition control module.

Use this diagnostic system in conjunction with the “OPERATIONAL CHECKLIST” and the “SEQUENCE OF OPERATION” to troubleshoot the appliance.

SERVICE

The installer may be able to observe and correct certain problems which may arise when the unit is put into operation. HOWEVER, it is recommended that only qualified servicemen, using appropriate test equipment, be allowed to service the heater.

As preliminary step, check wiring against diagram, check for grounded, broken or loose wires. Check all wire ends to be sure that they are making good contact.

ELECTRICAL SERVICING

CAUTION

LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPERAND DANGEROUS OPERATION.

VERIFY PROPER OPERATION AFTER SERVICING.

REPLACEMENT PARTS

Replacement parts may be ordered through State dealers, unauthorized servicers or distributors. Refer to the Yellow Pages for where to call or contact the State Water Water Heaters, 500 Lindahl Parkway, Ashland City, TN 37015, 1-800-821-2017 or visit our website at www.statewaterheaters.com. When ordering parts be sure to state the quantity, part number and description of the items including the complete model and serial number as it appears on the product. Refer to the parts list for more information.

SBD 30 150 specifications

The A.O. Smith SBD 30 150 is a high-efficiency water heater designed to meet the hot water needs of residential applications. Renowned for its reliability and performance, this model exemplifies A.O. Smith's commitment to innovative technology and energy efficiency.

One of the standout features of the A.O. Smith SBD 30 150 is its capacity. With a 30-gallon tank, it is ideally suited for small to medium-sized households. This makes it an excellent choice for families or individuals who require a steady supply of hot water for various applications like bathing, cooking, and cleaning.

The SBD 30 150 is equipped with a powerful, efficient heating element that delivers quick recovery rates. This means that users can expect hot water when they need it without long waiting times. The advanced insulation technology employed in its design reduces heat loss, allowing the unit to maintain a steady temperature and operate at optimal efficiency.

Energy efficiency is a key characteristic of the A.O. Smith SBD series. It features Energy Star certification, demonstrating its ability to provide hot water while minimizing energy consumption. Users can enjoy the dual benefit of reduced energy bills and a smaller carbon footprint. This model is particularly appealing to eco-conscious consumers looking to integrate green technologies into their homes.

In terms of durability, the SBD 30 150 is built with high-quality materials designed to withstand the test of time. Its glass-lined tank provides excellent corrosion resistance, which is essential for extending the lifespan of the unit. Additionally, the heater includes a durable anode rod, which serves to protect the tank from galvanic corrosion, further enhancing its longevity.

Convenience features are also notable in this model. It comes with a thermostat that allows for easy temperature control, enabling users to set the preferred hot water temperature without hassle. Moreover, the compact design of the SBD 30 150 makes it easy to install in various settings, whether it’s a small utility area or a basement.

In conclusion, the A.O. Smith SBD 30 150 water heater stands out as a practical and efficient solution for anyone in need of reliable hot water. With its impressive features, energy-saving technologies, and robust design, it is a smart investment for long-lasting performance and comfort in everyday life.