AO Smith Water Heater Blinks 3 Times [4 Easy Solutions]

AO Smith water heater blinks 3 times because of the blower problems, issues with pressure switch, faulty gas valves, and a blocked exhaust vent. Here, in this guide, we have done extensive research and come with these 4 reasons for this problem and their solutions.

We declare that these solutions will help you to fix your water heater problems. And it will help you to order the correct parts of the AO Smith water heater for replacement. Therefore, let’s get started.

AO Smith Water Heater Blinks 3 Times [4 Easy Solutions]

Every problem has many reasons and this problem also has many reasons. Sometimes your AO Smith water heater blinks 4 times, 5 times, or even more. However, we will discuss only 4 reasons behind the AO Smith water heater blinking 3 times and their solutions. Please read the below guide to know all the details.

1. Blower Problems

If the blower of your AO Smith water heater has a long vent run, then the cubic feet of air moved per minute will be decreased over time. The problem is when the fan’s cubic feet of air moved per minute decreases it won’t pull the pressure switch in. 

As a result, the AO Smith water heater will keep blinking 3 times. You will also keep listening to the pilot attempting to light and cycle, but there will be no flame on the bottom. In this case, you need to replace the blower to solve the problem.

2. Pressure Switch Problems

Sometimes, the pressure switch failed to close, causing your Ao Smith water heater to blink 3 times. It will also cause the fan of the water heater not to work. To remove a stuck closed draft pressure switch, you need to check for continuity across the pressure switch terminals when the fan is not working. 

If you have continuity then you will have to change the pressure switch. You can also try removing a lead from the pressure switch to solve this problem.

3. Faulty Gas Valve

If the gas valves of the Ao Smith water heater are faulty, then it will blink 3 times. You need to replace the gas valves to solve this problem. However, if the age of your Ao Smith water heater is more than 10 years, then replacing the gas valves is possibly not cost-effective since the tank of the water heater could leak at any time. In that case, you may need to change and install the whole Ao Smith water heater.

4. Blocked Exhaust Vent

Sometimes a blocked exhaust vent or a weak fan causes an open draft pressure switch. As a result, your Ao Smith water heater will blink 3 times. In this case, you need to replace the exhaust vent and the fan.

FAQ:

How to reset ao smith water heater?

Before doing anything, at first, you need to ensure that there is no electricity reaching the power unit by disconnecting the power unit. Then, find and remove the cover plate. For doing it, you will require a screwdriver. Now, remove the insulation. After that, tap the reset button. Finally, reassemble and turn on the Ao Smith water heater.

How long does an ao smith water heater last?

Generally, an Ao Smith water heater lasts between 10-12 years. But, it depends on various factors including water quality, usage volume or frequency, temperature setting, and many more. Some Ao Smith water heaters can even last more than 20 years.

Why is my ao smith water heater beeping?

Your Ao smith water heater can beep for several reasons. TThese include your water heater requires descaling, overheating warning, extreme water pressure, low on fuel, and the air intake or vent channel is blocked. Your Ao Smith water heater can also beep if there is any leakage, it can be a water or gas leakage or faulty sensor. A low inlet supply or clogged inlet or aerator can also cause this problem.

How long does it take for the water heater to reset?

The average reset time for an 80-gallon electric tank water heater with an arriving water temperature of 62 degrees is 120 minutes. And the average reset time for an 80-gallon gas tank water heater with an arriving water temperature of 62 degrees is 60-70 minutes.

Is there a reset button on a hot water heater?

Yes, there is a reset button on a hot water heater. The reset button is generally a red color button. It is generally situated near the thermostat. The reset button might also be secreted behind a removable small panel on the unit and then behind a few insulations. Or it can be somewhere on the lower portion of the water heater. A few units even have a reset button in every location.

Conclusion

If you are facing a problem with your AO Smith water heater blinks 3 times, then it can be a worrisome problem. It can be tiresome to look for the reasons and solutions to this problem and even more pathetic if you do not find them properly. That is where this article comes in. Here you will find the 4 main reasons for this problem and their solutions. 

We are hopeful that after reading this guide you can solve this problem very easily. If your problem has not been solved after trying all the solutions described in this article, then let us know in the comment box.

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